What type of reactions do lyases catalyze, and what are the substrates involved?
Answers
The type of reactions that lyases catalyze are the removal of a chemical group from a substrate and aldol reactions. The substrates involved in lyase-catalyzed reactions vary depending on the specific enzyme.
Lyases are enzymes that catalyze the cleavage or addition of chemical groups to a substrate, without the involvement of water molecules. Lyases typically break chemical bonds or catalyze the formation of new ones.
Lyases catalyze two types of reactions:
Removal of a chemical group from a substrate (decarboxylation, deamination, or dehydration)
Addition of a chemical group to a substrate (aldol addition or reverse aldol condensation)
The substrates involved in lyase-catalyzed reactions vary depending on the specific enzyme.
For example, fumarase is a lyase that catalyzes the reversible conversion of fumarate to L-malate, while pyruvate decarboxylase is a lyase that catalyzes the decarboxylation of pyruvate to acetaldehyde and carbon dioxide.
Other examples of lyase-catalyzed reactions include the removal of ammonia from amino acids, and the addition or removal of phosphate groups from nucleotides.
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Related Questions
How many grams of NaOH is produced from 120 grams of Na₂O?
Answers
Answer:
To determine how many grams of NaOH are produced from 120 grams of Na₂O, we need to first understand the chemical reaction that occurs when Na₂O is converted to NaOH. The reaction is as follows:
2 Na₂O + 2 H₂O → 2 NaOH + O₂
This reaction shows that for every 2 molecules of Na₂O that are converted to NaOH, 2 molecules of water are also produced.
Next, we need to determine the molar mass of Na₂O and NaOH. The molar mass of Na₂O is 61.98g/mol, and the molar mass of NaOH is 40.00g/mol.
Now we can use the molar masses to determine how many grams of NaOH are produced from 120 grams of Na₂O. First, we need to convert the mass of Na₂O from grams to moles by dividing by the molar mass:
120g Na₂O / 61.98g/mol = 1.94 mol Na₂O
Next, we need to multiply the number of moles of Na₂O by the conversion factor from the chemical reaction (2 mol NaOH / 2 mol Na₂O) to determine the number of moles of NaOH produced:
1.94 mol Na₂O * (2 mol NaOH / 2 mol Na₂O) = 1.94 mol NaOH
Finally, we can convert the number of moles of NaOH to grams by multiplying by the molar mass of NaOH:
1.94 mol NaOH * 40.00g/mol = 77.6g NaOH
Therefore, 120 grams of Na₂O will produce approximately 77.6 grams of NaOH.
Lana drew the diagram below to model asexual reproduction. Based on Lana's diagram, which statement explains the results of asexual reproduction? A. The offspring are not genetically identical to the parent, because each offspring receives only half of the chromosomes from a single parent. B. The offspring are not genetically identical to the parents, because two parents each contribute half of their chromosomes to each offspring. C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes. D. The offspring are genetically identical to the parents, because two parents each contribute a complete copy of their chromosomes to each offspring.
Answers
Based on Lana's diagram, the correct statement that explains the results of asexual reproduction is C. The offspring are genetically identical to the parent, because each offspring receives a complete copy of a single parent's chromosomes.
What happens in asexual reproduction?In the diagram, the parent cell divides into two identical daughter cells, each of which contains a complete copy of the parent cell's genetic material.
This type of reproduction, where a single parent produces offspring that are genetically identical to itself, is called asexual reproduction. It is the process by which many unicellular organisms, such as bacteria and some protists, reproduce.
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Osmosis is the process that H2O moves from where osmolality is low to where osmolality is high across a membrane that is impermeable to solutes. Osmolality is the number of solute particles per kg water. The osmolality of a cell is typically 300 mOsm. An isotonic solution would have the same osmolality as the cell, a hypertonic solution would have higher osmolality than the cell, and a hypotonic solution would have lower osmolality than the cell.
Effect of isotonic solution on cell shape:
Work in pairs, obtain a slide and coverslip. Add a drop of bovine blood to the slide, smear with a toothpick, and cover with a coverslip.
Examine under microscope (40x objective). Red blood cells are very pale. Closing the iris diaphragm can increase the contrast. Note the shape of red blood cells.
Add a drop of 0.9% NaCl or 5% dextrose to the edge of coverslip. As the fluid moves in under the coverslip, cells close to this edge are now soaked in this solution. Did these red blood cells change their shapes? Explain why.
Dispose the slide into the Glass box.
Effect of hypertonic solution on cell shape:
Obtain a new slide and coverslip. Repeat the above steps 1-2.
Add a drop of 25% NaCl to the edge of coverslip. As the fluid moves in under the coverslip, cells close to this edge are now soaked in this solution. Did these red blood cells change their shapes? Explain why.
Dispose the slide into the Glass box.
Effect of hypotonic solution on cell shape:
Obtain a new slide and coverslip. Repeat the above steps1.
Add a drop of distilled water to the edge of coverslip. As water moves in under the coverslip, cells close to this edge are now soaked in water. Did these red blood cells change their shapes? Explain why.
Dispose the slide into the Glass box.
Answers
In the provided activity, you are observing the effects of different solutions on the shape of red blood cells. Let's go through each effect and explanation:
Effect of isotonic solution on cell shape:
When an isotonic solution, such as 0.9% NaCl or 5% dextrose, is added to the edge of the coverslip, the red blood cells will not change their shape significantly. An isotonic solution has the same osmolality as the cell, meaning the concentration of solutes in the solution is similar to that inside the cell. As a result, there is no net movement of water across the cell membrane, and the cells maintain their original shape.
Effect of hypertonic solution on cell shape:
When a hypertonic solution, such as 25% NaCl, is added to the edge of the coverslip, the red blood cells will undergo a change in shape. A hypertonic solution has a higher osmolality than the cell, meaning the concentration of solutes in the solution is higher than that inside the cell. In this case, water will move out of the red blood cells through osmosis, from an area of lower osmolality (inside the cells) to an area of higher osmolality (the hypertonic solution). The loss of water causes the cells to shrink and become crenated or wrinkled.
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How does the water temperature affect the amount of carbon dioxide that can dissolve in the ocean?
Answers
Explanation:
When the ocean is warm, it can hold less carbon dioxide in solution and the ocean's ability to absorb carbon dioxide from the atmosphere is reduced.
(b) Ethyl alcohol is widely used in sanitizing agent. Pure Ethyl alcohol is highly flammable and has a 78.5°C boiling point; Flash Point: 16.6 deg C ( 61.88 deg F); Autoignition Temperature: 363 deg
Answers
Ethyl alcohol is widely used as a sanitizing agent due to its ability to kill bacteria and viruses effectively.
Ethyl alcohol, also known as ethanol, is a commonly used compound in sanitizing agents due to its potent antimicrobial properties. It has the ability to effectively kill a wide range of bacteria and viruses, making it a valuable ingredient in various disinfectants, hand sanitizers, and surface cleaners.
One of the reasons why ethyl alcohol is widely used as a sanitizing agent is its ability to denature proteins. When applied to a surface or skin, ethyl alcohol disrupts the cell membranes of microorganisms, causing them to break apart and ultimately leading to their inactivation. This denaturing effect makes it an effective tool for sanitizing and disinfecting surfaces, tools, and even hands.
Moreover, ethyl alcohol evaporates quickly, which contributes to its effectiveness as a sanitizing agent. When applied to a surface, the alcohol evaporates rapidly, ensuring that the contact time between the alcohol and the microorganisms is sufficient to kill them. This quick evaporation also minimizes the residual moisture left on surfaces, reducing the risk of microbial growth.
However, it is important to note that pure ethyl alcohol is highly flammable, with a relatively low flash point and autoignition temperature. These properties make it crucial to handle and store ethyl alcohol-based sanitizers with care, keeping them away from open flames or heat sources that could potentially ignite the alcohol vapors.
In conclusion, ethyl alcohol is widely used in sanitizing agents due to its powerful antimicrobial properties, ability to denature proteins, and quick evaporation. However, it is crucial to be aware of its flammability and handle it with caution to ensure safety during its use.
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PLEASE HELP ME WITH NUMBER 3!!!! you just have to fill in the blanks to get the balanced equation!!
Answers
Answer:
4Al + 3O₂ → 2Al₂O₃
Explanation:
The problem here is in balancing the equation below:
Al + O₂ → Al₂O₃
In balancing a chemical equation, the number of atoms on both sides of the expression must be the same;
put the alphabets a, b and c before each specie;
aAl + bO₂ → cAl₂O₃
Conserving Al;
a = 2c
Conserving O:
2b = 3c
Now, let c = 1, a = 2
b = \(\frac{3}{2}\)
Multiply through by 2;
c = 2, a = 4 and b = 3
4Al + 3O₂ → 2Al₂O₃
PLEASE HELP ME ASAP
Answers
the heat capacity of solid iron is 0.447 j/g˚c. if 70,548 j of energy were transferred to a 384.67 g chunk of iron at 25.82 ˚c, what would be the final temperature?
Answers
The final temperature of the iron chunk would be approximately 69.07 ˚C.
To determine the final temperature of the iron chunk, we can use the equation:
q = m * C * ΔT
where:
q = energy transferred (in joules)
m = mass of the iron chunk (in grams)
C = heat capacity of solid iron (in J/g˚C)
ΔT = change in temperature (in ˚C)
We can rearrange the equation to solve for ΔT:
ΔT = q / (m * C)
Substituting the given values:
q = 70,548 J
m = 384.67 g
C = 0.447 J/g˚C
ΔT = 70,548 J / (384.67 g * 0.447 J/g˚C)
ΔT ≈ 43.25 ˚C
To find the final temperature, we add ΔT to the initial temperature:
Final temperature = Initial temperature + ΔT
Final temperature = 25.82 ˚C + 43.25 ˚C
Final temperature ≈ 69.07 ˚C
Therefore, the final temperature of the iron chunk would be approximately 69.07 ˚C.
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Organisms typically have more than one form of each gene. If one form can mask the appearance of another form, that form is considered _______ the other form.
A.
better than
B.
dominant over
C.
recessive to
D.
worse than
Answers
If one form of a gene can mask the appearance of another form, that form is considered dominant over the other form. Option B.
What are dominant alleles?According to Mendel, genes are usually made up of 2 alleles. These alleles can be the same or different. When the alleles are the same, the gene is said to be homozygous. If the alleles are different, the gene is said to be heterozygous.
When the two alleles that make up a gene are different, one will be dominant and the other will be recessive. The dominant gene masks the effect of the recessive gene. In other words, the recessive gene cannot be expressed as long as it coexists with the dominant gene. In order for it to be expressed, it has to be in two copies or a homozygous recessive form.
For the dominant allele, however, only one copy is needed for it to be expressed.
In summary, if one form of a gene can mask the appearance of another form, that form is considered dominant over the other form.
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Who wants to help me ???
Answers
Answer:
what do u need help tho
Explanation:
what is important to note in the concentrations of pure solids and pure liquids when calculating the equilibrium constant expression
Answers
In the equilibrium constant expression, the concentrations of pure solids and pure liquids are not included because their concentrations are considered to be constant and do not affect the reaction quotient. This is because the concentration of a pure solid or liquid does not change with the addition or removal of another reactant or product. Therefore, they are not considered when calculating the equilibrium constant expression. Only the concentrations of aqueous or gaseous reactants and products are included in the expression.
~~~Harsha~~~
What is the force needed to accelerate a sled with a mass of 2 kg at a rate of
3.0 m/s²?
O
A. 2.0 N
B. 6.0 N
C. 1.5 N
D. 3.0 N
Answers
F = Ma
F = 2(3)
F= 6 Newtons
three students are asked to discuss why the water only condensed on the upper half of the test tube. which student employs correct scientific reasoning?
Answers
Student 2 is using correct scientific reasoning to explain why the water only condensed on the upper half of the test tube. Condensation is the process by which a gas changes into a liquid. Hence option B is correct.
What is the scientific reasoning about?
For the above to happen, the temperature of the gas must be cooled to a point where its molecules can no longer remain in a gaseous state and instead become a liquid. Therefore, In this case, the student is saying that the upper half of the test tube was cool enough to allow the water vapor to condense into a liquid. This is a valid explanation because it takes into account the principle of condensation and the role of temperature in this process.
In contrast, student 1 is not using scientific reasoning and student 3 is not mentioning the role of temperature in the process of condensation.
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Match up the characteristics below with the type of molecular bond they describe. Bonds found in Halite (between Na+ and Cl-) Bonds found between Si and O in the Si-O tetrahedron Bonds inside the water molecule (between the H and O ) Bonds that exist between two water molecules Strongest bond type Weakest bond type Bonds that are used by water to dissolve sal
Answers
The characteristics and the type of molecular bond they describe:
1. Bonds found in Halite (between Na⁺ and Cl⁻): Ionic bond
2. Bonds found between Si and O in the Si-O tetrahedron: Covalent bond
3. Bonds inside the water molecule (between the H and O): Covalent bond
4. Bonds that exist between two water molecules: Hydrogen bond
5. Strongest bond type: Covalent bond
6. Weakest bond type: Van der Waals bond
7. Bonds that are used by water to dissolve salt: Ionic bond
The ionic bond is a type of molecular bond found in halite (between Na⁺ and Cl⁻). The Si-O tetrahedron is held together by a covalent bond. The bond inside the water molecule (between the H and O) is also a covalent bond. The hydrogen bond is the type of bond that exists between two water molecules. The covalent bond is the strongest bond type, while the van der Waals bond is the weakest bond type. Water uses the ionic bond to dissolve the salt.
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if 0.01 mol neon gas at a particular temperature and pressure occupies a volume of 0.225 L. what volume would 0.05 mol neon gas occupy under the same conditions
Answers
If 0.01 mol of neon gas at a particular temperature and pressure occupies a volume of 0.225 L, then 0.05 mol of neon gas would occupy a volume of 1.125 L under the same conditions.
Given:
Number of moles of neon gas (n₁) = 0.01 mol
Volume of neon gas (V₁) = 0.225 L
We are required to find the volume of neon gas (V₂) when the number of moles (n₂) is 0.05 mol under the same conditions.
The relationship between the number of moles, volume, and pressure of a gas is given by the ideal gas law: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature.
Since the temperature and pressure are the same in this case, we can rearrange the ideal gas law equation to solve for the volume:
V = (n₁ * V₁) / n₂
Substituting the given values into the equation:
V₂ = (0.01 mol * 0.225 L) / 0.05 mol
V₂ = 0.00225 L / 0.05 mol
V₂ = 0.045 L/mol
Therefore, 0.05 mol of neon gas would occupy a volume of 1.125 L under the same conditions.
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How does the concentration of a gas in solution change when the partial pressure of the gas above the solution increases?
Answers
According to henry's law, higher the pressure of the gas, more is the solubility of gas in liquid. Increasing pressure on the gas molecules, reduces the kinetic energy of the gas molecules and hence increase the concentration of gas in solution.
What is henry's law of solubility?According to henry's law of solubility, the solubility of a gas in a liquid is directly proportional to the partial pressure of the gas above the liquid.
Mathematically,
C=K×P
where
C=solubility of a gas in a liquid
K= henry's constant=6.1x10⁻⁴ M /atm for nitrogen
P= pressure of the gas
The gas molecules keep on moving randomly with high kinetic energy so it is very difficult to dissolve gas in solution. To do this we need to apply high pressure over the gas so that gas particles comes closer and easily goes into the solution.
Therefore, increasing pressure on the gas molecules, reduces the kinetic energy of the gas molecules and hence increase the concentration of gas in solution.
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Briefly answer the following questions, including reasoning and calculations where appropriate: (a) Explain in your own words why direct expansion systems require the vapour exiting the evaporator to be superheated. (8 Marks) (b) Describe the difference between a forced draft evaporator and an induced draft evaporator, and describe why (and in what type of system) a forced draft evaporator is often preferred over an induced draft evaporator. (6 Marks) (c) Determine the R-number of each of the following refrigerants, and hence classify them (ie chlorofluorocarbon, hydrocarbon etc): (i) CClF 2
CF 3
(3 Marks) (ii) Tetrafluoroethane (3 Marks) (iii) H 2
O (3 Marks) (d) Briefly describe the role of hydrogen gas in an absorption refrigeration system (NH 3
/H 2
O/H 2
). In a system where the evaporating temperature is −2.0 ∘
C, with a design condensing temperature of 38.0 ∘
C, estimate the partial pressure of hydrogen in the evaporator.
Answers
Direct expansion systems require the vapour exiting the evaporator to be superheated to avoid liquid slugging, to improve the effectiveness of the evaporator and to maintain the stability of the compressor. (B) Forced draft and induced draft evaporators differ in the way air is introduced into them. (C) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant. (ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant and H2O is not classified as a refrigerant. (D) The partial pressure of hydrogen in the evaporator is 1.6 mmHg.
(a) Direct expansion systems are those in which the refrigerant in the evaporator evaporates directly into the space to be cooled or frozen. The evaporator superheat is used to make sure that only vapor and no liquid is carried over into the suction line and compressor. Superheating is required for the following reasons :
To avoid liquid slugging : Liquid slugging in the compressor's suction line can be caused by a lack of superheat, which can result in compressor damage. To improve the effectiveness of the evaporator : Superheating increases the evaporator's efficiency by allowing it to absorb more heat. To maintain the stability of the compressor : The compressor is protected from liquid by the correct use of superheat, which ensures that only vapor is returned to the compressor.(b) Forced draft and induced draft evaporators differ in the way air is introduced into them. In an induced draft evaporator, a fan or blower is positioned at the top of the evaporator, and air is drawn through the evaporator from the top. In a forced draft evaporator, air is propelled through the evaporator by a fan or blower that is located at the bottom of the evaporator. Forced draft evaporators are frequently used in direct expansion systems because they allow for better control of the air temperature. Because the air is directed upward through the evaporator and out of the top, an induced draft evaporator is less effective at keeping the air at a uniform temperature throughout the evaporator.
(c) (i) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant.
(ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant.
(iii) H2O is not classified as a refrigerant.
(d) The function of hydrogen gas in an absorption refrigeration system (NH3/H2O/H2) is to increase the heat of reaction between ammonia and water.
The pressure of hydrogen gas in the evaporator of an absorption refrigeration system can be determined using the formula, Pa/Pb = (Ta/Tb)^(deltaS/R),
where Pa = partial pressure of hydrogen in the evaporator, Ta = evaporating temperature, Tb = condensing temperature, Pb = partial pressure of hydrogen in the absorber, deltaS = entropy change between the absorber and evaporator, R = gas constant.
Substituting the given values, Ta = −2.0 ∘C = 271 K ; Tb = 38.0 ∘C = 311 K ; Pb = atmospheric pressure = 1 atm ;
deltaS = 4.7 kJ/kg K ; R = 8.314 kJ/mol K
we get, Pa/1 atm = (271/311)^(4.7/8.314)
Pa = 0.021 atm or 1.6 mmHg
Therefore, the partial pressure of hydrogen in the evaporator is 1.6 mmHg.
Thus, Direct expansion systems require the vapour exiting the evaporator to be superheated to avoid liquid slugging, o improve the effectiveness of the evaporator and to maintain the stability of the compressor. (B) Forced draft and induced draft evaporators differ in the way air is introduced into them. (C) CClF2CF3 (also known as R12) is a chlorofluorocarbon refrigerant. (ii) Tetrafluoroethane (also known as R134a) is a hydrofluorocarbon refrigerant and H2O is not classified as a refrigerant. (D) The partial pressure of hydrogen in the evaporator is 1.6 mmHg.
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"Orbitals of equal energy are each occupied by one electron before any is occupied by a second electron, and all electrons in singly occupied
orbitals must have the same spin" is a statement of
Select one:
a the Pauli exdusion principle,
b. the Aufbau principle.
the quantum effect
d. Hund's rule
Answers
Answer: the Aufbau principle.
Explanation:
Which of the following pairs represent isotopes?
A) ²⁸Si and ²⁸Si⁴⁺
B) ²⁸Si and ²⁸Al
C) ²⁸Si and ²⁹Si
D) ²⁸Si and ²⁸Si⁴⁻
E) ²⁸Si⁴⁺ and ²⁸Al³⁺
Answers
Isotopes are atoms of the same element that have different numbers of neutrons. Based on this definition, the pair of isotopes among the given options is C) ²⁸Si and ²⁹Si. Isotope ²⁸Si has 14 protons and 14 neutrons, while isotope ²⁹Si has 14 protons and 15 neutrons.
These isotopes have the same number of protons, indicating that they belong to the same element, silicon (Si), but they differ in the number of neutrons.
Option A) ²⁸Si and ²⁸Si⁴⁺ represents an ion of silicon, not an isotope. The presence of a positive charge indicates the loss of electrons.
Option B) ²⁸Si and ²⁸Al represent different elements, silicon and aluminum, respectively, so they are not isotopes.
Option D) ²⁸Si and ²⁸Si⁴⁻ represents an anion of silicon, not an isotope. The presence of a negative charge indicates the gain of electrons.
Option E) ²⁸Si⁴⁺ and ²⁸Al³⁺ represent different elements, silicon and aluminum, respectively, so they are not isotopes.
Therefore, the correct answer is C) ²⁸Si and ²⁹Si, which represent isotopes of silicon.
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The modern periodic table arranges the elements according to their atomic number and shared properties. If you wanted to predict which elements are explosive how would you organize the periodic table?.
Answers
Lower explosive elements should go on the left side of the periodic table, while high explosive elements go on the right.
Why is called the periodic table?The arrangement of the elements is why it is known as the periodic table. You'll see that they are arranged in rows and columns. Periods and Groups are the names given to the horizontal rows that go from left to right and up to down, respectively.
The periodic table will be arranged in the same way as the modern periodic table, starting with the least explosive elements at the bottom and moving up to the most explosive ones on the right. Elements with lower atomic numbers will be on the left side of the periodic table, and those with higher atomic numbers will be on the right side.
All known elements are grouped together in the periodic table of elements into groups with related properties.
As a result, the periodic table is arranged with lesser explosive elements on the left and high explosive elements on the right.
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Some people think that hydroelectric and solar power should be used to supply all of the electricity for the United States. Which of the following would be a flaw in this plan?
Answers
There are several places where wind power can indeed be employed. The following could pose a problem with this strategy
By wind power, what do you mean?When the breeze is used to produce mechanical or electrical energy, the process is known as wind power of wind energy. Wind turbines produce mechanical power from the kinetic energy of the wind.
Where does wind energy come from?The rotor blades of contemporary wind turbines are rotated by the wind, which transforms kinetic energy to rotational energy. A shaft that connects to the generator transfers this rotational energy, resulting in the creation of electrical energy.
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Answer: its C trust
Explanation:
How about the Neon, Argon, Oxygen and Water molecules, do they take up more space as a liquid or as a solid?
PLS HELP
Answers
The substances would take up more space as gas than as a solid.
What is the space taken up?We know that a solid has a definite shape and a definite volume. We know what the space that a solid is going to occupy is because the space that it can occupy is fixed. This is quite important to be at the back of our minds as we discuss.
A gas does not take up a definite space. We know that a gas does take up the volume of the object thus we can be bold to say that the gas is going to take up more space than the solid in all the cases.
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An iron wire (density = 7.87 g/cm³) has a diameter of 0.20 mm. If a sample of this iron wire has a mass of 21 g, how long is this
wire?
Answers
The length of the iron wire is 2077 cm.
How long is the wire?We have to note that the length of the wire is the thing that we are supposed to obtain in this question. We must note that the density of the object is the ratio of the mass to the volume of the object.
In this case, we need to first find the area of the iron wire from;
A = πr^2
A = A rea of the circle
r = radius of the circle
A = 3.142 * (0.2 * 10^-1)^2
A = 1.3 * 10^-3 cm^2
Now;
Density = mass/volume
Volume = Mass/ Density
Volume = 21 g/7.87 g/cm³
= 2.7 cm^3
Then volume = Area * length
Length = Volume/Area
Length = 2.7 cm^3/ 1.3 * 10^-3
= 2077 cm
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Can unit rate represent how much for one unit
Answers
Ok please thank goodness I don’t
Answer:A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity. Some common unit rates are miles (or kilometers) per hour, cost per item, earnings per week, etc.
Explanation: hope this helps mark as brainiest
if a gas sample in a balloon occupies 1.5 L at atmospheric pressure, what would be the pressure (in mmHg) if the volume was reduced to 0.8 L?
Answers
Answer:
1425 mmHg.
Explanation:
The following data were obtained from the question:
Initial volume (V1) = 1.5 L
Initial pressure (P1) = 1 atm
Final volume (V2) = 0.8 L
Final pressure (P2) =?
Next, we shall determine the final pressure of the gas by using the Boyle's law equation as follow:
P1V1 = P2V2
1 × 1.5 = P2 × 0.8
1.5 = P2 × 0.8
Divide both side by 0.8
P2 = 1.5/0.8
P2 = 1.875 atm
Finally, we shall convert 1.875 atm to mmHg.
This can be obtained as follow:
1 atm = 760 mmHg
Therefore,
1.875 atm = 1.875 × 760 = 1425 mmHg.
Therefore, the new pressure of the gas is 1425 mmHg.
A which statements contain conclusions?
B. Which statements refer to research?
C. Which statement contains a shypothesis?
D. Which statements contain observations?
E. Which statements describe an experinera?
F. Which statement supports the hypothesis?
G. In which statement is the problemi delined?
H. Which statement contain date?
I. Which is the variable in the experiment?
J. What is the control in the experiment?
K. Bhich statement includes an inference?
Answers
G. In which statement is the problemi delined?
you have 500 ml of a 0.5 m solution of ammonia nh3 (17.03 g / mol) dissolved in water. if you pour a 20 ml sample into a beaker, what will the molar concentration of the sample be?
Answers
12.5 mmol/L is the molar concentration of the sample having 0.5 M solution dissolved in water.
To answer this question, we need to calculate the molar concentration of the sample.
First, we need to find the amount of ammonium in the 500 mL of the 0.5 m solution.
We can calculate this by multiplying the molarity by the volume, which gives us 500 mL x 0.5 mol/L = 250 mmol.
Now, to find the molarity of the 20 mL sample, we need to divide the amount of ammonium by the volume of the sample: 250 mmol / 20 mL = 12.5 mmol/L.
Therefore, the molar concentration of the sample is 12.5 mmol/L.
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What is the role of cytoplasm in a living cell?
A fight infections
B. digest proteins
C. surround organelles
D. pass on genetic information
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Answer:
i think fight infection
Should DNA evidence ever be used as the only evidence to support a criminal conviction? Why or why not?
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The best that Genetic evidence can do is suggest that a certain person is more likely to have committed a crime than a stranger off the street. DNA results should not be the only piece of evidence used to prove guilt.
Has a criminal's conviction been aided by Genetic evidence?Tommie Lee Andrews became the first person in the United States to be convicted as a consequence of DNA evidence when he was found guilty in November 1987 and given a 22-year jail sentence based on both fingerprint analysis and DNA typing.
Why is DNA a reliable kind of proof in criminal cases?Because each person's DNA is unique and distinct from everyone else's, DNA is a significant tool for law enforcement investigations (except for identical twins). A crime lab can create a profile to be used in identifying a suspect by studying specific DNA sequences, or loci.
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if a metallic material is cooled through its melting temperature at an extremely rapid rate, it forms a noncrystalline solid (i.e., a metallic glass). will the electrical conductivity of the noncrystalline metal be greater or less than its crystalline counterpart? why?
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If a metallic material is cooled through its melting temperature at an extremely rapid rate, it forms a noncrystalline solid (i.e., a metallic glass). will the electrical conductivity of the noncrystalline metal be less than its crystalline
Electrical conductivity is the conductivity is the measure of ease at which an electric charge or heat can pass through the material and electric conductivity will be less because this is because the metal will be without repeating form and will be randomized with dead ends and at the ends conductivity will be lost which is what results in the lower value
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