1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dezoksy [38]
3 years ago
7

A sample of helium (He) effuses 2.0 times faster than another gas. What is the molar mass of the other gas?

Chemistry
1 answer:
Mariana [72]3 years ago
6 0

Answer:

The correct answer is 16 gram per mole.

Explanation:

Let A be the gas helium, and B be the unknown gas. It is clearly mentioned in the question that the effusion rate of helium gas is two times more than that of gas B. The molar mass of helium is 4.0 gram per mole. To solve the problem, Grahm's law is used, that is,  

Rate of effusion A/rate of effusion B = √ (Molar mass B/Molar mass of A

2.0 = √Molar mass of B/4.0 gram per mole.  

Now squaring both the sides we get,  

4.0 = Molar mass of B / 4.0

The molar mass of B = 16 gram per mole.  

You might be interested in
What is the equilibrium constant expression for the reaction 2no2 --> 2no + o2?
UkoKoshka [18]
Equilibrium constants use the following set up

Keq= [products]/[reactants]

i have attached a drawing with the expression

4 0
3 years ago
Which has the strongest intermolecular forces​
Elina [12.6K]

Answer:

I think it is B

Explanation:

8 0
3 years ago
Read 2 more answers
Napisz wzory sumaryczne tlenków o podanych nazwach
Alja [10]

Answer:

kingkongkabayo jahsgajavafhabavwh

6 0
2 years ago
How many more valence electrons does oxygen need to have a full outer valence shell?
sergejj [24]
Oxygen is in group 16 of the PTOE, so it has 6 valence electrons. In order to have a full outer shell it would need 2 more electrons. (second shell can hold a max of 8 electrons)
3 0
3 years ago
14. Which of the following alkanols on oxidation is most likely to yield the
kari74 [83]

Answer:

A

Explanation:

I think that is the ans but am not sure

6 0
2 years ago
Read 2 more answers
Other questions:
  • How many molecules are in 1 mol of sucrose (C12H22O11)?
    5·1 answer
  • Caffeine (C_8H_10N_4O_2) is a weak base with a K_b value of 4 times 10^-4. The pH of a 0.01 M solution of caffeine is in the ran
    13·1 answer
  • The half life for the radioactive decay of rubidium-87 to strontium-87 is 4.88 × 10 years. Suppose nuclear chemical analysis sho
    11·1 answer
  • If an acid is splashed on your skin, wash at once with
    9·2 answers
  • How many electrons does fluorine have? How many electron shells? How many electrons are needed to fill the valence shell?
    8·1 answer
  • Oil is a natural resource that is found inside of Earth. Oil can be used
    10·1 answer
  • If distance increases does potential energy increase or decrease?
    9·2 answers
  • Perform each conversion <br>5.88 dL to liters <br><br>​
    11·1 answer
  • Which phrase is the best description of osmosis
    8·2 answers
  • How can a chemical reaction be sped up?Select from the drop-down menu to correctly complete the statement.
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!