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
Dmitrij [34]
3 years ago
11

An effusion container is filled with 2 L of an unknown gas. It takes 350 s for the gas to effuse into a vacuum. From the same co

ntainer under the same conditions--same temperature and initial pressure, it takes 229 s for 2.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.
Chemistry
1 answer:
Vesnalui [34]3 years ago
7 0

Answer:

6.85g/mol

Explanation:

According to the Graham's law of diffusion,the rate of diffusion is inversely proportional to  the square root of molecular mass.

k=r√m.m

k=constant

r=rate of diffusion or effusion

m.m=molecular mass

taking ''1'' and '2" to be the two gases 1=oxygen,2=unknown gas

r1√m1=r2√m2,molar mass of oxygen=16

mathematically√m2=229√16/350

√m2=2.617

m2=6.85g/mol

You might be interested in
Convert 512 kilograms to milligrams.<br><br> 0.000512<br> 0.512<br> 512,000<br> 512,000,000
olga55 [171]
The answer is D! 512000000
5 0
4 years ago
Read 2 more answers
If 1.3 L of C3H8 combusts according to the equation below, how much CO2 will be produced?
SCORPION-xisa [38]

Answer:

0.162 moles of CO₂ are produced by this reaction

Explanation:

The reaction is:

C₃H₈(g) + 5O₂(g)  →  3CO₂(g) +4H₂O(g)

As we have the volume of propane, we need to know the mass that has reacted, so we apply density's concept.

Density = Mass / Volume → Density . Volume = Mass

0.00183 g/mL . 1300 mL = Mass → 2.379 g

We determine the moles → 2.379 g . 1mol / 44 g = 0.054 moles

Ratio is 1:3. 1 mol of propane can produce 3 moles of dioxide

Then, 0.054 moles may produce (0.054 .3)/1 = 0.162 moles

6 0
3 years ago
How many structures are possible for a square planar molecule with a formula of ax3y?
Galina-37 [17]

Answer:

Explanation:

Depending upon the relative arrangements of XandY X a n d Y , the square planar molecule AX3Y A X 3 Y shows only the following structure: Hence, only one structure is possible for a square planar molecule with a formula of AX3Y A X 3 Y .

5 0
2 years ago
A chemistry teacher is able to grade chemistry labs at a rate of 5 labs for every 3 minutes. They need to grade 165 labs how man
PIT_PIT [208]

Answer:

1.65hr

Explanation:

Given parameters:

Number of labs  = 5 labs

 Time taken  = 3 minutes

Unknown:

Time taken in hours to grade 165 labs  = ?

Solution:

Let us find the rate of the teacher;

  Rate  = \frac{number of labs}{time}  

  Insert the parameters and solve;

   Rate  = \frac{5}{3}   = 1.67labs/min

Now;

   Time to grade 165 labs  = \frac{number of labs}{rate}  

   Time to grade 165 labs  = \frac{165}{1.67}   = 98.8min

  Since;

               60min = 1hr

               98.8min  = \frac{98.8}{60}   = 1.65hr

3 0
3 years ago
What is difference between layer A and layer b? ​
lakkis [162]

Answer:

can you send me a picture of what layer a and look b look like and then I will be able to evaluate

7 0
3 years ago
Other questions:
  • A(n) _______ is a substance of two or more atoms held together with chemical bonds.
    15·1 answer
  • Kevin draws a lewis structure for the molecule of ozone, o3. later on that day, he draws another one for a friend to show what h
    7·2 answers
  • Two new planets with equal masses are discovered. Planet A is twice as far from the sun as Planet B. Which of the following is t
    7·2 answers
  • What is metal ? Where does it coke from ?
    6·2 answers
  • Number of moles of sodium azide<br>​
    12·2 answers
  • Which one help!<br> Chemistry
    6·1 answer
  • 20 POINTS
    9·1 answer
  • Please help im being timed :((
    6·1 answer
  • 12.0 grams of sodium reacts with 5.00 grams of chlorine. What mass of sodium chloride could be produced?
    9·1 answer
  • In nature, Chlorine-35 isotopes (35 amu) make up 75
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!