Answers
Answer:
Yh your right..
Explanation:
Have a great day!
Related Questions
a patient is receiving procalamine postoperatively at 125 ml/h. procalamine contains 3% final concentration of glycerin (4.3 kcal/gm) and 3% final concentration of amino acid. how many grams of protein are provided per day by this solution?
Answers
The procalamine solution provides approximately 74.7 grams of protein per day.
To decide the quantity of grams of protein gave by the procalamine arrangement, we really want to know the complete number of kilocalories (kcal) given by the arrangement each day and the extent of kcal that come from protein.
How much glycerin in the arrangement is 3% or 0.03. The kcal given by the glycerin can be determined as:
125 ml/h x 24 h/day = 3000 ml/day
3000 ml/day x 0.03 = 90 g/day
90 g/day x 4.3 kcal/gm = 387 kcal/day
Additionally, how much amino corrosive in the arrangement is 3%. The kcal given by the amino corrosive can be determined as:
125 ml/h x 24 h/day = 3000 ml/day
3000 ml/day x 0.03 = 90 g/day
90 g/day x 4 kcal/gm = 360 kcal/day
The absolute kcal given by the arrangement each day is:
387 kcal/day + 360 kcal/day = 747 kcal/day
Accepting that 10% of the complete kcal given by the arrangement come from protein, the quantity of grams of protein given by the arrangement each day is:
747 kcal/day x 0.10 = 74.7 g/day
Thusly, the procalamine arrangement gives roughly 74.7 grams of protein each day.
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A metal crystallizes in a face-centered cubic structure and has a density of 11.9 g/cm^3. If the radius of the metal atom is 138 pm, what is the identity of the metal? 2) Vanadium crystallizes in a body-centered cubic structure and has an atomic radius of 131 pm. Determine the density of vanadium.
Answers
a = 2√2 * r
a = 2√2 * 138 pm = 389.6 pm
Now, convert the volume of the unit cell to cm³:
V = (389.6 * 10^(-10) cm)³ = 5.93 * 10^(-23) cm³
The face-centered cubic (fcc) structure has 4 atoms per unit cell. Using the density formula, we can find the molar mass:
density = mass/volume
11.9 g/cm³ = (4 * Molar mass) / (V * Avogadro's number)
Molar mass = (11.9 * 5.93 * 10^(-23) * 6.022 * 10^(23)) / 4
Molar mass ≈ 107 g/mol
The metal with a molar mass of approximately 107 g/mol is silver (Ag).
2) For vanadium, we'll calculate the density using its body-centered cubic (bcc) structure:
a = 4r / √3
a = (4 * 131 pm) / √3 = 302 pm
Now, convert the volume of the unit cell to cm³:
V = (302 * 10^(-10) cm)³ = 2.76 * 10^(-23) cm³
The bcc structure has 2 atoms per unit cell. The molar mass of vanadium is 50.94 g/mol. Using the density formula:
density = (2 * 50.94) / (2.76 * 10^(-23) * 6.022 * 10^(23))
density ≈ 6.11 g/cm³
The density of vanadium is approximately 6.11 g/cm³.
Important functions of hydrochloric acid in digestion/absorption include:__
Answers
Important functions of hydrochloric acid in digestion/absorption include Activation of enzymes, Protein digestion, Optimal pH for enzyme activity, Denaturation of proteins, Kill bacteria and pathogens, Nutrient absorption.
Important functions of hydrochloric acid (HCl) in digestion and absorption include:
Activation of enzymes: HCl helps activate the enzyme pepsinogen, converting it into its active form called pepsin. Pepsin is essential for the breakdown of proteins into smaller peptides, initiating protein digestion in the stomach.
Protein digestion: HCl provides the acidic environment necessary for pepsin to function optimally. Pepsin breaks down proteins into smaller peptides that can be further digested by other enzymes in the small intestine.
Optimal pH for enzyme activity: HCl lowers the pH of the stomach, creating an acidic environment. This acidic pH is required for the activity of other digestive enzymes, such as gastric lipase, which aids in the digestion of dietary fats.
Denaturation of proteins: HCl helps denature proteins by disrupting their tertiary structure. This unfolding of proteins exposes more surface area, making it easier for enzymes to break them down into smaller peptides.
Kill bacteria and pathogens: The highly acidic environment created by HCl in the stomach helps kill many harmful bacteria and pathogens that may enter the digestive system through food or other means. This serves as a defense mechanism against infections.
Nutrient absorption: HCl plays a role in the absorption of certain nutrients, such as iron and vitamin B12. It helps convert these nutrients into forms that are more easily absorbed by the small intestine.
In summary, hydrochloric acid plays crucial roles in digestion and absorption. It activates enzymes, facilitates protein digestion, creates an optimal pH for enzyme activity, denatures proteins, helps kill bacteria and pathogens, and aids in the absorption of specific nutrients. Without adequate HCl production, proper digestion and nutrient absorption can be compromised, leading to digestive issues and nutrient deficiencies.
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How many neutrons does this atom have?
Answers
Answer:
Explanation:
having an average mass of 12.01. It's not much different than you would expect from an atom with 6 protons and 6 neutrons. The number of carbon isotopes doesn't change the atomic mass very much. As you move higher in the periodic table, you will find elements with many more isotopes.
don’t mind the bottom part just that question ! :)
Answers
Answer:
the charge of an atom is shown with a superscript
If nitrogen gas is collected over water at 20 o C and the total pressure of the gas in the collection vessel is 200 kPa, what is the pressure of dry nitrogen gas?
Answers
Answer:
Explanation:
pressure of dry nitrogen gas at 20° = Partial pressure of nitrogen and partial pressure of water at that temperature .
The pressure of dry nitrogen gas= total pressure - vapour pressure of water at 20°C
= 200 k Pa - 2.34 k Pa
= 197.66 kPa.
I need help with these two questions
Answers
halogens have 7
allali have 2
noble gases have 8
K = 1
P = -3
Ra= 7
Cl = -1
N = 5
O = 6
what is the molarity of kmno4 in a solution of 0.0897 g of kmno4 in 0.450 l of solution?
Answers
The molarity of KMnO4 in the given solution is approximately 0.00126 M. Molarity is a measure of the concentration of a solute in a solution. It represents the number of moles of the solute present per liter of the solution.
To determine the molarity of KMnO4 in the given solution, we need to first calculate the number of moles of KMnO4 using its mass and molar mass, and then divide it by the volume of the solution.
The molar mass of KMnO4 can be calculated as follows:
(1 × atomic mass of potassium) + (1 × atomic mass of manganese) + (4 × atomic mass of oxygen)
= (1 × 39.10 g/mol) + (1 × 54.94 g/mol) + (4 × 16.00 g/mol)
= 39.10 g/mol + 54.94 g/mol + 64.00 g/mol
= 158.04 g/mol
Now, let's calculate the number of moles of KMnO4:
Number of moles = Mass / Molar mass
Number of moles = 0.0897 g / 158.04 g/mol
Number of moles ≈ 0.000567 mol
Next, we need to calculate the molarity using the number of moles and the volume of the solution:
Molarity (M) = Number of moles / Volume (in liters)
Molarity = 0.000567 mol / 0.450 L
Molarity ≈ 0.00126 M
In this case, the molarity tells us the concentration of KMnO4 in moles per liter.
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a speech on what makes you happy ?
Answers
Answer:
The happiness that we get by doing these things is a very beautiful experience. I feel happy when I help my mother in her kitchen work, water the plants, eat my favorite dish, go for a walk, listen to music, play with pets, spend time with family, gossip with friends,
~its srishty~✿
A certain crystalline substance that has a low melting point does not conduct electricity in solution or when melted. This substance is likely to be (A) a covalent network solid (B) a metallic solid (C) a polymer (D) an ionic solid (E) a molecular solid
Answers
The main answer to your question is (E) a molecular solid.
A molecular solid is composed of individual molecules held together by intermolecular forces, such as London dispersion forces, dipole-dipole forces, and hydrogen bonding.
These intermolecular forces are not strong enough to allow the substance to conduct electricity in solution or when melted.
Additionally, the low melting point of the substance indicates that the intermolecular forces holding the molecules together are relatively weak.
Summary: The substance is likely a molecular solid, which does not conduct electricity in solution or when melted due to weak intermolecular forces between individual molecules.
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Air is cooling at night. The frost point (temperature at which RH with respect to ice reaches 100%) is reached at T = -10 degree Celsius. a) What is the RH (normal RH with respect to liquid water) at this point? b) Upon further cooling the air reaches a temperature of T =-11 degree Celsius Kaolinite particles of 200 nm diameter are present. Do you expect ice particles to form? If yes, do they form via deposition nucleation or condensation of droplets followed by freezing? Briefly explain your answer. c) Upon even further cooling the air reaches a temperature of T = -12 degree Celsius. Same question as before: Do you expect ice particles to form now? If yes, do they form via deposition nucleation or condensation of droplets followed by freezing? Briefly explain your answer. Equilibrium vapor pressures may be calculated or taken from the table below. t/°C 0 -1 -2 -3 -4 -5 -6 -7 -8 -9 - 10 -11 -12 -13 T/ Keow /Pa 273.15 611.2 272.15 568.2 271.15 527.9 270.15 490.2 269.15 454.8 268.15 421.8 267.15 390.9 266.15 362.1 265.15 335.1 264.15 310.0 263.15 286.5 262.15 264.7 261.15 244.3 260.15 225.4 259.15 207.8 258.15 191.4 e oi/Pa 611.2 562.7 517.7 476.1 437.5 401.8 368.7 338.2 310.0 283.9 259.9 237.7 217.3 198.5 181.2 165.3 - 14 - 15 Equilibrium vapor pressures with respect to water (eow) and with respect to ice (coi).
Answers
The equilibrium vapor pressure with respect to water (eow) is 259.9 Pa. assume that saturation vapor pressure is same as equilibrium vapor pressure.
Therefore, the RH at the frost point is
RH = (eow / saturation vapor pressure) × 100
= (259.9 Pa / 259.9 Pa) × 100
= 100%
b) At T = -11 °C, we need to compare the equilibrium vapor pressure with respect to water (eow) and the equilibrium vapor pressure with respect to ice (coi) to determine if ice particles will form. From the given table, at T = -11 °C, the equilibrium vapor pressure with respect to water (eow) is 237.7 Pa, and the equilibrium vapor pressure with respect to ice (coi) is 165.3 Pa.
The air is supersaturated with respect to ice, and the presence of Kaolinite particles can provide surfaces for water droplets to condense onto, leading to the formation of ice particles.
c) At T = -12 °C, we compare the equilibrium vapor pressure with respect to water (eow) and the equilibrium vapor pressure with respect to ice (coi). From the given table, at T = -12 °C, the equilibrium vapor pressure with respect to water (eow) is 217.3 Pa, and the equilibrium vapor pressure with respect to ice (coi) is 181.2 Pa.
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A 0.366 g sample of hydrated tin(II) chloride (SnCl2•xH2O) is found to contain 0.0586 g of water. What is the approximate percent of water in the hydrate? What is the value of x?
16%
2. 81%
3. 84%
4. 75%
5. 19%
Part 2
1. 5
2. 1
3. 4
4. 2
5. 6
6. 3
Answers
1. The approximate percent of water in the hydrate is 16%
2. The value of x in the hydrate is 2
Data obtained from the question Mass of hydrate, SnCl₂•xH₂O = 0.366 gMass of water, H₂O = 0.0586 gPercentage of water =? Value of x =? 1. How to determine the percentage of water in the hydrateMass of hydrate, SnCl₂•xH₂O = 0.366 g
Mass of water, H₂O = 0.0586 g
Percentage of water =?
Percentage = (mass of water / mass of hydrate) ×100
Percentage of water = (0.0586 / 0.366) × 100
Percentage of water = 16%
2. How to determine the value of xTo obtain the value of x, we shall determine the formula of the hydrate. This can be obtained as follow:
Mass of hydrate, SnCl₂•xH₂O = 0.366 gMass of water, H₂O = 0.0586 gMass of anhydrous, SnCl₂ = 0.366 – 0.0586 = 0.3074Formula of hydrate =?Divide by their molar mass
SnCl₂ = 0.3074 / 190 = 0.0016
H₂O = 0.0586 / 18 = 0.0032
Divide by the smallest
SnCl₂ = 0.0016 / 0.0016 = 1
H₂O = 0.0032 / 0.0016 = 2
Thus, the formula of the hydrate is SnCl₂•2H₂O
Comparing the formula of the hydrate (SnCl₂•2H₂O) with SnCl₂•xH₂O, we can see that the value of x is 2
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what do waves carry from place to place
Answers
Answer:
Waves carry energy from place to place.
Explanation:
Some waves are used for mainly communication and phone signals. They help people get internet in the middle of nowhere if you are near an energy wave.
It was Monday evening and Gerald had just gotten off of work and decided he was too tired to cook anything for dinner. Instead, he decided to order out pizza at Express Pizza Delivery and ordered a large pepperoni pizza with extra cheese. A couple of hours after eating the pizza, Gerald noticed he was especially thirsty and that his urine was dark in color. He also noticed that if he pinched his skin it was less elastic than normal and he had a slight headache. Why was Gerald’s skin less elastic than normal?
Answers
Gerald’s skin less elastic than normal because Gerald’s might be dehydrated which cause uneasiness.
What is dehydration?Dehydration is defined as a process that occurs when your body doesn't have enough water and other fluids to perform its usual processes because you use or lose more fluid than you consume.
Dehydration occurs when you don't drink enough water or when you lose a lot of water quickly, like when you sweat, throw up, or have diarrhea. Dehydration and excessive urination are possible side effects of some drugs, including diuretics.
Strength and stamina can also be lost as a result of dehydration. It is a major contributor to heat exhaustion.
Thus, Gerald’s skin less elastic than normal because Gerald’s might be dehydrated which cause uneasiness.
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17) 4NH3 + 502 → 4NO + 6H2OIf 73 grams of NH3 are reacted and 101 grams of H20 are actually produced, what is the percentyield?
Answers
Answer
%Yield = 87.2%
Explanation
Given:
mass of NH3 reacted = 73 g
mass of H2O produced = 101 g
We know:
molar mass of NH3 = 17,031 g/mol
molar mass of water = 18.01528 g/mol
Required: % Yield
Solution:
The formula used to calculate the percentage yield is:
%Yield = (actual yield/theoretical yield) x 100
The actual yield of H2O produced = 101 g
Now lets calculate the theoretical yield first.
First find the number of moles of NH3, and use stoichiometry to find the theoretical mass of water.
n = m/M n is the moles, m is the mass and M is the molar mass.
n = 73/17,031 g/mol
n = 4.29 mol
Using the stoichiometry, there molar ratio between NH3 and H2O is 4:6
Therefore the moles of H2O = 4.29 x (6/4)
n of H2O = 6.43 mol
The theoretical mass can then be calculated:
m = n x M
m = 6.43 mol x 18.01528 g/mol
m = 115.83 g
%Yield = (101 g/115.83)*100
%Yield = 87.2%
Pls this is very important for me. Whoever answer this whole I'll mark them as brainliest..... The question is many cars have catalytic converters in their exhaust systems. In a catalytic converter most of the Co and No are formed in a car engine is changed into less harmful products. Identify these products and state the metal catalyst used.
Answers
The most commonly used metal catalyst in catalytic converters is platinum (Pt) among the other possible metals that could also be used in this regard.
What is a catalytic inverter?
Through a sequence of chemical reactions, carbon monoxide (CO) and nitrogen oxides (NOx) produced by an automobile engine are transformed into less hazardous compounds in a catalytic converter.
We know that the catalytic inverter can be able to convert carbon monoxide into carbon dioxide and can also be able to convert nitrogen monoxide to nitrogen dioxide.
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what are the units for the rate constant, k, for a second-order reaction?
Answers
Answer: M⁻¹ x s⁻¹
Explanation:
Units for rate constant K.
Zero order: M x s⁻¹
First order: s⁻¹
Second order: M⁻¹ x s⁻¹
A new drug has been released to the public and is popular among
consumers. It is effective in relieving high blood pressure. However, it has
altered some patients' personalities. Which stage of the engineering process
may address this negative side effect?
A. Screening
B. Testing
C. Looking for improvements
D. Evaluating test results
Answers
Answer:
c. Looking for improvements
Explanation:
I took the quiz and it was right
Answer: C
Explanation:
just took the test
what mass of solid copper (ii) sulfate is needed to make 500.0 ml of 0.0300 m copper (ii) sulfate solution?
Answers
According to the question Therefore, you need 2.394 grams of solid copper (II) sulfate to make a 500.0 mL 0.0300 M solution.
To determine the mass of solid copper (II) sulfate needed to make 500.0 mL of 0.0300 M copper (II) sulfate solution, we need to use the formula:
M = (molarity x moles) / volume
First, let's calculate the moles of copper (II) sulfate required:
moles = M x volume = 0.0300 mol/L x 0.5000 L = 0.0150 moles
Next, we need to determine the molar mass of copper (II) sulfate, which is 159.6 g/mol.
Finally, we can calculate the mass of copper (II) sulfate required:
mass = moles x molar mass = 0.0150 moles x 159.6 g/mol = 2.39 g
Therefore, we would need 2.39 grams of solid copper (II) sulfate to make 500.0 mL of 0.0300 M copper (II) sulfate solution.
mass = moles × molar mass
First, we need to find the moles of copper (II) sulfate:
moles = concentration × volume
moles = 0.0300 M × 0.500 L (converting 500.0 mL to L)
moles = 0.0150 mol
Next, we'll find the molar mass of copper (II) sulfate (CuSO4):
Molar mass = 63.5 (Cu) + 32.1 (S) + 4 × 16.0 (O) = 159.6 g/mol
Now, we can calculate the mass:
mass = 0.0150 mol × 159.6 g/mol
mass = 2.394 g
Therefore, you need 2.394 grams of solid copper (II) sulfate to make a 500.0 mL 0.0300 M solution.
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An ioc occurs when what metric exceeds its normal bounds?.
Answers
An ionic bond is formed when there are more or less electrons that normal in bonding atoms.
What are Ionic bonds?An ionic bond is formed when one atoms donates electrons to another specie to form an ion pair. One atom is positively charged while the other specie is negatively charged.
Hence, an ionic bond is formed when there are more or less electrons that normal in bonding atoms.
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You have a shiny metal disc that weighs 1.31 kg that you want to find out what its made of. When you put the disc into a graduated cylinder with 5L in it, you see that the water level rose by about 125 mL. You have a list of densities for various shiny metals: silver= 10.5 g/ mL, nickel= 8.9 g/mL, titanium = 4.5 g/mL, and rhodium = 10.7 g/ mL. What is the disc made of?
Answers
Answer:
The disc is made of silver.
Explanation:
To solve this question we need to calculate the metal's density. To do so we need its mass (already given by the problem, 1.31 kg) and its volume.
Following Archimedes' principle, the volume of water displaced by the disk is equal to the disk's volume. This means the metal's volume is 125 mL.
Now we convert 1.31 kg into g, to better compare with the given options:
1.31 kg * 1000 = 1310 gFinally we calculate the metal's density:
Density = Mass / VolumeDensity = 1310 g / 125 mL = 10.48 g/mLLooking at the densities given by the problem, the closest one is silver.
Which two elements make up this mixture, element C and B element C, and an element D and C or element B And D?
Answers
which compound below will readily react with a solution of bromine consisting of 48% hydrobromic acid and 30% hydrogen peroxide? group of answer choicesacetic acidcyclohexanedichlorometanet-butyl alcoholcyclohexene
Answers
The compound that will readily react with a solution of bromine consisting of 48% hydrobromic acid and 30% hydrogen peroxide is acetic acid.Hydrobromic acid is a solution of hydrogen bromide (HBr) in water.
It is a strong acid that can be used for several industrial purposes. Hydrogen peroxide is a reactive chemical with the chemical formula H2O2. When combined with hydrobromic acid, hydrogen peroxide forms a solution known as hydrobromic acid. Bromine is a non-metallic element that reacts with many compounds to form new substances.Acetic acid (CH3COOH) is a weak organic acid that is commonly found in vinegar and is used in the production of cellulose acetate.
When acetic acid is mixed with a solution of bromine containing 48% hydrobromic acid and 30% hydrogen peroxide, it reacts readily. This reaction will produce a new compound.The other three options (cyclohexane, dichloromethane, t-butyl alcohol, and cyclohexene) do not have any active functional groups such as an alcohol, carboxylic acid, or an unsaturated bond that can undergo halogenation or oxidation reactions. Therefore, they will not react with a solution of bromine consisting of 48% hydrobromic acid and 30% hydrogen peroxide.
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Pls answer ill give brainliest question in pic
Answers
C is the correct answer
Temperature increases as you gain altitude in the stratosphere and the thermosphere. Temperature increases in altitude within the stratosphere because of the ozone layer.
—————
Please remember to revise this and make it in your own words if you want! I hope this helps you. -Doodle
—————
What igneous rock is non-vesicular and glassy in texture and has a mafic composition?
Answers
Answer:
igneous rock
Explanation:
Hazardous gas released from a factory’s smokestack is an example of __________ externality. a. local b. positive c. resource d. negative
Answers
Answer: D. negative
Explanation:
Cold solvents are preferred for recrystallization because Group of answer choices Hot solvents catch fire easily to prevent dissolution of the crystals impurities are expected to have high solubility in cold solvents Cold solvents are cost effective
Answers
Crystals impurities are expected to have high solubility in cold solvents. Hence, option C is correct.
What is a cold solvent?Cold solvent cleaning is a process used to remove grease, wax and other impurities from metal and other parts.
The process is also called degreasing. Cold solvents are sprayed onto the dirty part and it is brushed clean.
Once the filtration process is done the collected crystals should be washed with a little more ice-cold solvent to remove final soluble impurities which would otherwise be left on the surface of the crystals.
Hence, option C is correct.
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2 moles of NO, was placed in an empty I dm' bottle and allowed to reach equilibrium according to the equation:
At equilibrium, 1.2 moles of N,O, dissociated. Calculate the value of the equilibrium constant for the reaction at that
temperature.
Answers
2NO(g) ⇌ N2(g) + O2(g)
According to the problem statement, 2 moles of NO were placed in a 1 dm^3 bottle and allowed to reach equilibrium, and at equilibrium, 1.2 moles of NO had dissociated. This means that the initial concentration of NO was:
[NO]initial = 2 mol / 1 dm^3 = 2 M
And the concentration of NO at equilibrium is:
[NO]equilibrium = (2 - 1.2) mol / 1 dm^3 = 0.8 M
Since the stoichiometry of the balanced equation is 2:1:1 for NO, N2, and O2, respectively, the equilibrium concentrations of N2 and O2 will also be 0.6 M.
The equilibrium constant (Kc) can be calculated using the equilibrium concentrations of the reactants and products, raised to the power of their stoichiometric coefficients. Therefore:
Kc = ([N2][O2]) / ([NO]^2)
Substituting the equilibrium concentrations into the equation, we get:
Kc = (0.6 M x 0.6 M) / (0.8 M x 0.8 M)
Kc = 0.5625
Therefore, the value of the equilibrium constant for the reaction at that temperature is 0.5625. Note that the units of Kc depend on the stoichiometry of the balanced equation. Since the stoichiometric coefficients are all 1, the units of Kc in this case are M^-1
How does an increase in reactant concentration affect the rate of reaction?
Answers
Answer:
increase the rate of reaction.
Explanation:
Answer:
A. It leads to more frequent collisions, which increase reaction rate.
Explanation:
EDG
Iron(II) sulfide +
potassium—> makes what ?
Answers
Answer:
Potassium Sulfide
Explanation:
K is more reactive than Fe which means K displaces Fe from the equation