2. Dragonflies can travel at speeds up to 35 miles perhour. How many meters per second is that? (1 mile = 1609 meters)
3. The Hyperion is the tallest redwood tree in the worldat 379. 7 feet. How many centimeters is that? (1 inch = 2. 54 cm)
4. How many atoms are in 2. 35 moles sulfur?
5. How many molecules are in 3. 45 moles sucrose?
Pls Help ASAP!
Answers
2. To convert miles per hour to meters per second, we need to divide by 2.237.
Thus, 35 miles per hour is equal to (35/2.237) meters per second.
Simplifying, we get:
= 15.646 m/s
3. To convert feet to centimeters, we need to multiply by 30.48.
Thus, 379.7 feet is equal to (379.7 x 30.48) centimeters.
Simplifying, we get:
= 1158.754 centimeters
4. To calculate the number of atoms in 2.35 moles of sulfur, we need to use Avogadro's number, which is 6.022 x 10^23 atoms per mole.
Therefore, the number of atoms in 2.35 moles of sulfur is:
2.35 moles x 6.022 x 10^23 atoms/mole = 1.41 x 10^24 atoms
5. To calculate the number of molecules in 3.45 moles of sucrose, we need to use Avogadro's number, which is 6.022 x 10^23 molecules per mole.
Therefore, the number of molecules in 3.45 moles of sucrose is:
3.45 moles x 6.022 x 10^23 molecules/mole = 2.08 x 10^24 molecules
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Related Questions
can someone please help me i need help asap please
Answers
2) Summary: main points and highlights from the body paragraphs
3) Significance: the relevance and implications of the essay's findings
the following equation shows the formation of water from hydrogen and oxygen. 2h2 o2 → 2h2o how many grams of water will form if 10.54 g h2 reacts with 95.10 g o2? g h2o
Answers
The balanced chemical equation for the formation of water from hydrogen and oxygen is given below:
2H2(g) + O2(g) → 2H2O(l)
The equation shows that 2 moles of hydrogen react with 1 mole of oxygen to form 2 moles of water.
The molar mass of hydrogen is 2.016 g/mol, while that of oxygen is 32.00 g/mol.
Therefore, the number of moles of hydrogen that reacts can be determined as follows:
n(H2) = mass/Mr(H2)n(H2) = 10.54 g/2.016 g/moln(H2) = 5.23 mol
Similarly, the number of moles of oxygen can be calculated as follows:
n(O2) = mass/Mr(O2)n(O2) = 95.10 g/32.00 g/moln(O2) = 2.97 mol
From the balanced chemical equation, it can be seen that 2 moles of water is produced for every 2 moles of hydrogen and 1 mole of oxygen that react.
Therefore, the number of moles of water that is produced can be calculated as follows:
n(H2O) = 2 x n(O2)n(H2O) = 2 x 2.97n(H2O) = 5.94 mol
The mass of water produced can be determined using the following formula:
mass = n(H2O) x Mr(H2O)
mass = 5.94 mol x 18.015 g/mol
mass = 106.97 g
Thus, 106.97 g of water will be formed if 10.54 g H2 reacts with 95.10 g O2.
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Answer: its 94.03
Explanation: hydrogen
Which options correctly describe a biological change caused by introducing the kudzu vine into the southeastern United States?
Select all that apply.
Responses
populations of small animals decreased, and populations of large animals increasedpopulations of small animals decreased, and populations of large animals increased
native plant populations decreasednative plant populations decreased
native animal populations decreasednative animal populations decreased
tree species increased while small plant species decreased
Answers
Tree species increased while small plant species decreased.
Which of the following best describes a biological alteration brought on by the introduction of the kudzu vine to the Southeast United States?The introduction of the kudzu vine into the southeastern United States has caused numerous biological changes. One of the most notable changes has been the decrease in populations of small animals and the increase in populations of large animals.Such a shift in the animal population dynamics can be attributed to the kudzu vine’s ability to quickly spread and dominate the landscape. Additionally, the introduction of the kudzu vine has caused a decrease in native plant populations, as the vine has been able to out-compete native species for resources.Native animal populations have also declined as a result of the decrease in native plant populations, as the animals rely on these plants for their habitat and food.Furthermore, the kudzu vine has caused a shift in tree species, as large trees have been able to out-compete smaller tree species for resources. Additionally, the kudzu vine has caused a decrease in small plant species, as these species are unable to compete with the vine for resources.Overall, the introduction of the kudzu vine into the southeastern United States has caused numerous biological changes, resulting in the decline of some species and the rise of others.To learn more about biological change caused by introducing the kudzu vine refer to:
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HELP FAST
H₂S gas is removed from the system at
equilibrium below. How does the
system adjust to reestablish
equilibrium?
NH4HS(s) = NH3(g) + H₂S(g)
A. The reaction shifts to the right (products) and the
concentration of NH3 decreases.
B. The reaction shifts to the left (reactants) and the
concentration of NH3 decreases.
C. The reaction shifts to the right (products) and the
concentration of NH3 increases.
D. The reaction shifts to the left (reactants) and the
concentration of NH3 increases.
Answers
When H₂S gas is removed from the system at equilibrium, the reaction shifts to the right (products) and the concentration of NH₃ increases (option C)
How do i determine where the reaction will shift to?A French scientist (Chatelier) postulated a principle which helps us to understand a chemical system in equilibrium.
The principle states that If a an external constraint such as change in temperature, pressure or concentration is imposed on a system in equilibrium, the equilibrium will shift so as to neutralize the effect.
According to Chatelier's principle a decrease in concentration of the products will favor the forward (right) reaction.
From the above principle, we can conclude that when H₂S gas is removed from the system at equilibrium, the reaction shifts to the right (products) and the concentration of NH₃ increases.
Thus, the correct answer to the question is option C
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according to lussac's law, how many liters of hydrogen gas, h2, react with 2 l of nitrogen gas, n2, to produce 4 l of ammonia gas, nh3?select one:a.6 lb.2 lc.4 ld.3 l
Answers
Option d. 3 L. According to Lussac's Law of combining volumes, when gases react, they do so in volumes that are in the ratio of small whole numbers.
Therefore, the ratio of the volumes of H2 to N2 to NH3 is 3:1:2. This means that for every 3 L of H2, 1 L of N2 and 2 L of NH3 are produced. Since 4 L of NH3 is produced in this case, we can set up a proportion:
3 L H2 / 2 L N2 = x L H2 / 4 L NH3
Cross-multiplying gives:
3 L H2 * 4 L NH3 = 2 L N2 * x L H2
Simplifying gives:
12 L H2 = 2 L N2 * x L H2
Dividing both sides by 2 L N2 gives:
x L H2 = 6 L H2 / 2 = 3 L H2
Therefore, 3 L of H2 react with 2 L of N2 to produce 4 L of NH3.
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how many milliliters (ml) of 0.5 m naoh will be used to completely neutralize 3.0 g of acetic acid, hc2h3o2 in a commercial sample of vinegar?
Answers
Approximately 20.0 mL of 0.5 M NaOH will be used to completely neutralize 3.0 g of acetic acid (HC2H3O2) in the vinegar sample.
To determine the volume of NaOH required to neutralize the given amount of acetic acid, we need to use the stoichiometry of the balanced chemical equation between acetic acid and NaOH.
The balanced equation for the neutralization reaction between acetic acid and sodium hydroxide is:
HC2H3O2 + NaOH → NaC2H3O2 + H2O
From the equation, we can see that the stoichiometric ratio between acetic acid and sodium hydroxide is 1:1. This means that 1 mole of acetic acid reacts with 1 mole of NaOH.
First, we need to calculate the moles of acetic acid using its molar mass:
Molar mass of HC2H3O2 = 60.05 g/mol
Moles of HC2H3O2 = 3.0 g / 60.05 g/mol ≈ 0.04997 mol
Since the stoichiometric ratio is 1:1, the moles of NaOH required will be the same as the moles of acetic acid.
Now, we can calculate the volume of 0.5 M NaOH needed using the formula for molarity:
Molarity = Moles of solute / Volume of solution (in liters)
0.5 M = 0.04997 mol / Volume (in liters)
Rearranging the equation to solve for volume, we have:
Volume (in liters) = 0.04997 mol / 0.5 M = 0.09994 L
Since 1 L is equal to 1000 mL, we can convert the volume to milliliters:
Volume (in mL) = 0.09994 L * 1000 mL/L ≈ 99.94 mL
Rounding to the appropriate number of significant figures, we find that approximately 20.0 mL of 0.5 M NaOH will be used to completely neutralize 3.0 g of acetic acid in the vinegar sample.
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WHAT IS THE STOCK NAME FOR FeSO^3
Answers
Iron(II) Sulfite FeSO3 Molecular Weight
Hope this helps!
Have a great day :)
terminal alkene + NBS + CClâ‚„ + heat
Answers
The reaction you are referring to is the bromination of a terminal alkene using N-bromosuccinimide (NBS) and carbon tetrachloride (CCl4) as solvents in the presence of heat. This reaction is known as the "Hell-Volhard-Zelinsky" (HVZ) bromination.
The mechanism of the HVZ bromination involves the formation of a free radical intermediate, which is generated by the reaction between NBS and a small amount of hydrogen bromide (HBr) that is formed by the reaction between the terminal alkene and NBS.
This free radical intermediate then reacts with the terminal alkene, leading to the formation of a bromoalkene. The reaction proceeds via an anti-Markovnikov addition of bromine to the terminal carbon of the alkene.
The role of CCl4 in this reaction is to act as a solvent and to facilitate the formation of the free radical intermediate. The reaction is typically carried out at elevated temperatures, which helps to generate the free radical intermediate and to promote the overall reaction.
Overall, the reaction can be represented by the following equation:
Terminal alkene + NBS + CCl4 + heat → Bromoalkene
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Which of the following is correct order from smallest to biggest
Answers
Sorry this question is incomplete.
The reaction is at dynamic equilibrium.
N2 + 3H2 ⇌ 2NH3
Which statement is correct?
(1 point)
The solution has the same concentrations of nitrogen gas and ammonia.
The solution has the same concentrations of nitrogen gas and ammonia.
Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
The solution has the same concentrations of nitrogen and hydrogen gases.
The solution has the same concentrations of nitrogen and hydrogen gases.
Both directions of the reaction have stopped.
Both directions of the reaction have stopped.
Answers
When the reaction N₂ + 3 H₂ ⇌ 2 NH₃ is at dynamic equilibrium, Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
The reaction is at dynamic equilibrium.
N₂ + 3 H₂ ⇌ 2 NH₃
Which statement is correct?
The solution has the same concentrations of nitrogen gas and ammonia. NO. Even though we don't know the equilibrium constant, it is unlikely that N₂ and NH₃ have the same concentrations at equilibrium. Nitrogen and hydrogen combine at the same rate that ammonia breaks down. YES. At the equilibrium, the forward rate is equal to the reverse rate. The solution has the same concentrations of nitrogen and hydrogen gases. NO. Even though we don't know the equilibrium constant, it is unlikely that N₂ and H₂ have the same concentrations at equilibrium. Both directions of the reaction have stopped. NO. The reactions don't stop because the equilibrium is dynamic.When the reaction N₂ + 3 H₂ ⇌ 2 NH₃ is at dynamic equilibrium, Nitrogen and hydrogen combine at the same rate that ammonia breaks down.
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The addition of 15 g of salt to a sample of pure water causes its freezing point to be reduced by 1.3°C. What would be the effect of dissolving an additional 15 g of salt into the solution? A. There would be no additional effect on the freezing point. B. The freezing point would be depressed (decreased) by an additional 1.3°C. C. The freezing point would be depressed by 15°C. D. The freezing point would become higher.
Answers
The addition of 15 g of salt to a sample of pure water causes its freezing point to be reduced by 1.3°C. On dissolving an additional 15 g of salt into the solution, there would be no additional effect on the freezing point.
When salt is added to pure water, what happens to its freezing point?As a result, whenever ice and saline water come into touch, the ice melts and releases more liquid water. Additional salt is then released as a result, melting more ice in the process, and so forth. The freezing point of the substance decreases as dissolved salt concentration increases.
Why does salt slow down the freezing process of water?
The blue and red circles in this image represent the sodium chloride ions that are the primary source of this phenomenon. The amount of water molecules that can join with ice molecules is decreased as a result of these charged particles disrupting the molecules' equilibrium. As a result, water freezes more gradually.
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How much excess reactant is left over when 17.0 g of potassium hydroxide (KOH) reacts with 20.0 g of iron (III) nitrate (Fe(NO3)3)?
Answers
4.56g excess reactant is left over when 17.0 g of potassium hydroxide (KOH) reacts with 20.0 g of iron (III) nitrate (Fe(NO₃)₃)
Reactants are raw materials that react with one another and form products.
Here given balanced reaction is
2KOH + Fe(NO₃)₂ → Fe(OH)₂ + 2KNO₃
Then we have to calculated the masses of KOH and Fe(NO₃)₂ from the balanced reaction
Molar mass of KOH = 39+16+1 = 56g/mol
Mass of KOH = 2×56 = 112g
And the molar mass of Fe(NO₃)₂ = 56+2[14+(16×3)]
= 56+2[14 + 48)]
= 56+2[62]
= 56+124
= 180g/mol
Then from the balanced equation
112g of KOH and 180g/mol of Fe(NO₃)₂
Then the 17 g of KOH = 17×180/112g
= 27.32 g of Fe(NO₃)₂
Then for 20.0 g of iron (III) nitrate
Therefore Xg of KOH = 112×20/180
Xg of KOH = 12.44g
Thus 12.44g of KOH reacted
Therefore we have determine the leftover mass of the excess reactant
Mass of KOH leftover = ?
Mass of KOH leftover = (Mass of KOH given) – (Mass of KOH that reacted)
Mass of KOH leftover = 17 - 12.44g
Mass of KOH leftover = 4.56g
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Suppose you massed out 18.95 g of sodium carbonate (Na2CO3). How many moles
would you have?
Answers
considering the ionic nature of the mg-o and na-cl bonds, which of the following statements do you agree with? considering the ionic nature of the mg-o and na-cl bonds, which of the following statements do you agree with? a. mg-o likely forms a more metallic bond than na-cl because it is made between divalent ions rather than monovalent ions. b. mg-o will exhibit a weaker bond than na-cl. c. assuming bond distances are about equal, mg-o will likely form a 4x stronger bond than na-cl.3 all are likely true.
Answers
Considering the ionic nature of the Mg-O and Na-Cl bonds, the statement that is most likely true is b. mg-o will exhibit a weaker bond than na-cl.
The bond between atoms occurs due to the tendency of atoms to attain stability by achieving a fully filled valence shell. The atoms that tend to gain or lose electrons for achieving the stable electronic configuration are known as ions. These ions form an ionic bond with the other oppositely charged ion in order to attain stability.In the given options, option (b) is most likely to be true, i.e. mg-o will exhibit a weaker bond than na-cl because it requires less energy to remove electrons from Na or Cl, as they are monovalent, than from Mg or O, which are divalent.
The bond strength is inversely proportional to the size of the ion, and Mg is a larger ion than Na. In contrast, option (a) is incorrect as the bond between two ions depends on the charge of the ions and the distance between them, not on the type of ion. Option (c) is incorrect as the bond strength is inversely proportional to the size of the ion, not directly proportional. Option (d) is incorrect as only option (b) is most likely true.
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At night, an equilibrium reaction between two different nitrogen compounds generates N2O5N2O5 in the atmosphere, as represented below.
Reaction 1: NO3(g)+NO2(g)⇄N2O5(g) K=2.6×10−11NO3(g)+NO2(g)⇄N2O5(g) K=2.6×10−11
During the day, solar radiation is absorbed by NO3(g), resulting in its decomposition. Which of the following best explains whether the equilibrium concentration of N2O5(g) in the atmosphere in the daytime is different from that in the nighttime, and why?
a) [N2O5] will be higher during the day, because the decomposition of NO3(g) results in an increase in the rate of production of N2O5(g).
b) [N2O5] will be higher during the day, because NO2(g) will be in excess, leading to an increase in the rate of production of N2O5(g)
c) [N2O5] will be higher at night, because the decomposition of NO3(g) in the daytime will result in an increase in the rate of consumption of N2O5(g) to reform NO3(g)
d) [N2O5] will be about the same at nighttime and daytime, because the amount of NO2(g) will not be changed and the equilibrium will not be affected.
Answers
The breakdown of NO3 in the day leads to more consumption of N2O5 in the day hence its concentration is greater at night than in the day.
What is equilibrium constant?The equilibrium constant is a number that shows how much reactants are converted to products in a reaction. It is often shown as capital letter K in English.
Given the situation described in the question, we know that the concentration of N205 will be higher at night, because the decomposition of NO3(g) in the daytime will result in an increase in the rate of consumption of N2O5(g) to reform NO3(g).
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Can someone help me please
Answers
Answer:
A
Explanation:
the sun gives energy to the grass to grow then the animal eats the grass and gets the energy and then the decomposer or mushroom will break it down for food.
Which one of the following molecules can form hydrogen bonding?
Answers
Answer:
it is a
Explanation:
i hope this helps you
Use mnemonic “water is FON” to remember what Hydrogen needs to bond to in order for there to be an hydrogen bond.
what do all group 2 elements have in common? (2 points) group of answer choices they all gain two electrons to form a stable outer energy level. they form covalent bonds with halogens. they all react easily with the noble gases. they tend to form ionic bonds by losing electrons.
Answers
Due of their propensity to create ionic connections by giving up electrons, group 2 elements all share this trait. option (d) is correct.
What are three electron-related facts?The negatively charged particles known as electrons revolve around the outer edges of the nucleus. For scientists, it can be challenging to monitor them because of how quickly they spin. The tiniest particles in an atom, you can put 20,000 of them inside a proton, they are drawn to the positive ion of the protons.
Same-group electrons have similar chemcial and physical characteristics. Group-2 is the alkaline earth metals which have tendency to lose two electrons to form the M+2 types of metal ions as after losing two electrons they get the Noble gas configuration.
Since they tend to lose electrons therefore they will form ionic bond with non-metals and results to form the ionic compounds.
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The Complete Question :
what do all group 2 elements have in common? (2 points) group of answer choices
(a) they all gain two electrons to form a stable outer energy level.
(b) they form covalent bonds with halogens.
(c) they all react easily with the noble gases
(d) they tend to form ionic bonds by losing electrons.
Due of their propensity to create ionic connections by giving up electrons, group 2 elements all share this trait.
Thus, they tend to form ionic bonds by losing electrons, this is the correct option.
What are three electron-related facts?The negatively charged particles known as electrons revolve around the outer edges of the nucleus. For scientists, it can be challenging to monitor them because of how quickly they spin. The tiniest particles in an atom, you can put 20,000 of them inside a proton, they are drawn to the positive ion of the protons.
Same-group electrons have similar chemical and physical characteristics. Group-2 is the alkaline earth metals which have tendency to lose two electrons to form the M+2 types of metal ions as after losing two electrons they get the Noble gas configuration.
Since they tend to lose electrons therefore they will form ionic bond with non-metals and results to form the ionic compounds.
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Select True or False: The following reaction is a redox reaction.
CaC2(s) + H2O(l) → HCCH(g) + CaO(s)
Answers
It is true that CaC2(s) + H2O(l) → HCCH(g) + CaO(s) is a redox reaction.
What is a redox reaction?A redox reaction is a chemical reaction in which there is a transfer of electrons between reactants. This transfer of electrons can involve one or more atoms and may result in a change in the oxidation state of one or more reactants.
The reaction involves the transfer of electrons from one reactant to another. Calcium carbide (CaC2) is oxidized as it loses electrons to form calcium oxide (CaO). At the same time, water (H2O) is reduced as it gains electrons to form acetylene gas (HCCH). Therefore, this is a redox reaction.
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Lost when 18. 0 g of ethanol, c2h5oh , cools from 63. 5 ∘c to -47. 0 ∘c
Answers
The heat lost by 18.0 g of ethanol during cooling from 63.5 °C to -47.0 °C is approximately -4,193.76 J (or 4.19 kJ, rounded to two decimal places).
The temperature change and the mass of the substance are given. To calculate the heat lost by ethanol during cooling, we can use the formula:
q = mcΔT
where:
q = heat lost or gained (in joules)
m = mass of the substance (in grams)
c = specific heat capacity of the substance (in J/g·°C)
ΔT = change in temperature (in °C)
First, we need to determine the specific heat capacity of ethanol. The specific heat capacity of ethanol is approximately 2.44 J/g·°C.
Next, let's calculate the heat lost by the given mass of ethanol during cooling.
Step 1: Convert the mass of ethanol to grams.
The given mass is already in grams, so no conversion is needed.
Step 2: Calculate the change in temperature.
ΔT = final temperature - initial temperature
ΔT = (-47.0 °C) - (63.5 °C)
ΔT = -110.5 °C
Step 3: Plug the values into the formula and solve for q.
q = (18.0 g) × (2.44 J/g·°C) × (-110.5 °C)
q ≈ -4,193.76 J
Therefore, the heat lost by 18.0 g of ethanol during cooling from 63.5 °C to -47.0 °C is approximately -4,193.76 J (or 4.19 kJ, rounded to two decimal places). Note that the negative sign indicates heat loss.
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Elements o fb the same group have the same chemical properties
Answers
Answer:
The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.
What is the diffrance between atomic orbital and energy levels?
Answers
Water is considered a polar solvent due to attractive forces known as hydrogen bonds. a hydrogen bond is:_________
Answers
Because of the attraction forces known as hydrogen bonding, water is referred to as a polar solvent. An attraction between molecules known as a hydrogen bond occurs when partially positive hydrogen atoms are drawn to partially negative F, O, or N atoms.
What is a hydrogen bond?A hydrogen bond (or H-bond) is a strong electrostatic attraction between an electronegative atom holding a lone pair of electrons, known as the hydrogen bond acceptor, and a hydrogen (H) atom that is covalently attached to a more electronegative "donor" atom or group.
How can hydrogen atoms join together?When a hydrogen atom bonds with an electronegative atom, powerful intermolecular forces called hydrogen bonds are produced. The hydrogen bond acceptor's electronegativity will rise, resulting in a stronger hydrogen bond.
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how many milliliters of this solution contain 0.01000mol of ascorbic acid?
Answers
There are 100 milliliters of a 0.100 mol/L solution of ascorbic acid will contain 0.01000 mol of ascorbic acid.
To determine how many milliliters of a solution contain 0.01000 mol of ascorbic acid, we need to know the concentration of the solution. The concentration is usually expressed in units of moles per liter (mol/L) or molarity.
Once we know the concentration (in mol/L), we can use the following formula to calculate the volume (in liters) of the solution needed:
Volume (L) = moles of solute / concentration (mol/L)
To convert the volume from liters to milliliters, we can multiply by 1000.
For example, if the concentration of the solution is 0.100 mol/L, we can calculate the volume of the solution needed to contain 0.01000 mol of ascorbic acid as follows:
Volume (L) = 0.01000 mol / 0.100 mol/L = 0.100 L
To convert to milliliters, we multiply by 1000:
Volume (mL) = 0.100 L x 1000 mL/L = 100 mL
Therefore, 100 milliliters of a 0.100 mol/L solution of ascorbic acid will contain 0.01000 mol of ascorbic acid.
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How does what you learned in this investigation help you explain why chefs measure the amount of ingredients they need before preparing foods?
Answers
Chefs measure the number of ingredients they need before preparing foods for accuracy, consistency, and balancing flavors.
Measurements ensure accuracy and consistency in recipes. Cooking is a precise process, and precise measurements of ingredients are crucial for achieving the desired taste, texture, and overall outcome of a dish. By measuring ingredients, chefs can replicate their recipes consistently, ensuring that each dish turns out as intended.
Certain ingredients, such as spices, seasonings, and acids, can greatly impact the taste of a dish. By carefully measuring these ingredients, chefs can maintain a precise balance of flavors.
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what type of electromagnetic radiation includes the wavelength 10-7 m
Answers
Explanation:
Regions of the Electromagnetic Spectrum
Listed below are the approximate wavelength, frequency, and energy limits
of the various regions of the electromagnetic spectrum.
Wavelength (m) Frequency (Hz) Energy (J)
Radio > 1 x 10-1 < 3 x 109 < 2 x 10-24
Microwave 1 x 10-3 - 1 x 10-1 3 x 109 - 3 x 1011 2 x 10-24- 2 x 10-22
Infrared 7 x 10-7 - 1 x 10-3 3 x 1011 - 4 x 1014 2 x 10-22 - 3 x 10-19
Optical 4 x 10-7 - 7 x 10-7 4 x 1014 - 7.5 x 1014 3 x 10-19 - 5 x 10-19
UV 1 x 10-8 - 4 x 10-7 7.5 x 1014 - 3 x 1016 5 x 10-19 - 2 x 10-17
X-ray 1 x 10-11 - 1 x 10-8 3 x 1016 - 3 x 1019 2 x 10-17 - 2 x 10-14
Gamma-ray < 1 x 10-11 > 3 x 1019 > 2 x 10-14
Why we need to use the archetorien principle in lab report
Answers
This principle is important in laboratory reports because it can be used to determine an object's or material's density, which is an important physical property used in many applications.
The Archimedes' principle is a fundamental physics principle that states that the buoyant force acting on an object submerged in a fluid equals the weight of the fluid displaced by the object. It is critical to use the Archimedes' principle in a lab report to accurately and precisely determine the density of the object or material being studied. This principle provides a dependable and accurate method for calculating density, which is useful in many scientific and engineering fields. By including the Archimedes' principle in a lab report, you show that you considered all relevant factors and used appropriate methods to determine the physical properties of the materials being studied.
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A car travels 65 miles in 1 hour. What is the average speed of the car?
Answers
I'm giving the brainliest if it's correct thank you
An ammonia (NH3) sample occupies a volume of 6.00 L at TPN. Calculate its mass.
Answers
Answer:
Explanation:
Now, you know that this solution has a molarity of 6.00 M, which basically means that every liter, which is the equivalent of 1000 mL, will contain 6.00 moles of ammonia. Since we've picked a sample of 1000 mL, you can say that it will contain 6.00 moles of ammonia. To convert this to grams, use the compound's molar mass
A gas occupies 40.0 mL at -123°C. What volume does it occupy at 27°C, assuming pressure is constant?
Answers
Answer:
80.0 mL
Explanation:
V1/V2 = T1/T2
T1 = 273 -123 = 150K
T2 = 273 +27 = 300 K
40.0 mL/V2 = 150K/300K
V2 = 40.0 mL*300K/150K = 80.0 mL
The volume that is occupied at 27°C, assuming pressure is constant is 80ml.
The Ideal gas law is the equation of state of a hypothetical ideal gas. It is a good approximation to the behaviour of many gases under many conditions, although it has several limitations. The ideal gas equation can be written as
PV = nRT
where,
P = Pressure
V = Volume
T = Temperature
n = number of moles
Given,
Initial Volume = 40 ml
Initial temperature = -123°C = 273 - 123 = 150K
Final temperature = 27°C = 273 + 27 = 300K
From Charles' law,
V₁ / T₁ = V₂ / T₂
V₂ = (40 × 300) ÷ 150
= 80 ml
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