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
Komok [63]
3 years ago
9

Under identical conditions, separate samples of O2 and an unknown gas were allowed to effuse through identical membranes simulta

neously. After a certain amount of time, it was found that 8.44 mL of O2 had passed through the membrane, but only 3.95 mL of of the unknown gas had passed through. What is the molar mass of the unknown gas?

Chemistry
1 answer:
Vilka [71]3 years ago
8 0

Answer:

147.2g

Explanation:

The full solution can be found in the image attached. Graham's law was applied to the problem. The rate of diffusion of a gas is inversely proportional to its molar mass or vapour density. Molar mass= 2vapour density

You might be interested in
An evil villain wants to broadcast a message to everyone on Earth. They are using satellites for the communication process. For
stira [4]
Uhhhhhhh maybe the answer is 3
7 0
1 year ago
Adding luminol to water creates a physical or chemical change ​
faust18 [17]
Answer: chemical

not 100% sure
7 0
3 years ago
Read 2 more answers
How many grams of aluminum is produced when 82.4 grams of aluminum chloride
yKpoI14uk [10]

Answer:

16.6 g of Al are produced in the reaction of 82.4 g of AlCl₃

Explanation:

Let's see the decomposition reaction:

2AlCl₃ →  2Al  + 3Cl₂

2 moles of aluminum chloride decompose to 2 moles of solid Al and 3 moles of chlorine gas.

We determine the moles of salt:

82.4 g . 1mol/ 133.34g = 0.618 moles

Ratio is 2:2. 2 moles of salt, can produce 2 moles of Al

Then, 0.618 moles of salt must produce 0.618 moles of Al.

Let's convert the moles to mass → 0.618 mol . 26.98g /mol = 16.6 g

6 0
3 years ago
What is the mass of six of these marbles? What is the volume? What is the<br> density?
chubhunter [2.5K]

Answer:

All right. So let's calculate the density of a glass marble. Remember that the formula for density is mass over volume. So if I know that the masses 18.5 g. And I know that the um volume is 6.45 cubic centimeters. I can go ahead and answer this to three significant figures. So it's going to be 2.87 grams per cubic centimeter. Okay, that's our density. Now, density is an intensive process. Okay. We're an intensive property. I really should say. It doesn't depend on how much you have. Mhm. If I have one marble, its density is going to be 2.87 g per cubic centimeter. If I have two marbles, the density will be the same because I'll double the mass and I'll also double the volume. So when I divide them I'll get the same number. Okay, that's what makes it an intensive property. No matter how many marbles I have, they'll have the same density. Mass though is not an intensive property. So if I have six marbles and I want to know what the massive six marbles is. Well, I know the mass of each marble is 18.5 g. So the mass of six marbles Is going to be 100 11 g. Because mass is an extensive property. It depends on how much you have. If I change the number of marbles, I'm going to change the mass. That's an extensive property. All right. So we've calculated the density. We've calculated the mass and then what happens to the density of one marble compared to six marbles as we mentioned before. Since densities and intensive property, the densities will be the same, no matter how may.

Explanation:

5 0
3 years ago
What are in the energy levels that surround the nucleus of an atom?
sasho [114]
Electrons are the thing in the outer energy levels
4 0
3 years ago
Other questions:
  • At 25 oC, hydrogen iodide breaks down very slowly to hydrogen gas and iodine vapor with a rate constant of 2.4 x 10-21L/mol.s. I
    15·1 answer
  • Which of the following would become a negative ion before bonding?
    15·2 answers
  • Definition: The possible state for an electron of an atom that is proportional to its distance to the nucleus.
    5·1 answer
  • Work and energy have the same unit why​
    10·2 answers
  • The gas in a 250. mL piston experiences a change in pressure from 1.00 atm to 4.45 atm. What is the new volume (in mL) assuming
    6·1 answer
  • A solution has a pOH of 8.20. What is the concentration of H3O+?
    14·1 answer
  • What ion do acids release in solution? hydrogen hydroxide carbonate ammonium
    15·2 answers
  • Describe are seasons like near the equator.
    9·1 answer
  • You have been sent a sample of aspirin to analyse for impurities. Describe how you could
    6·1 answer
  • In the reaction catalyzed by the pyruvate dehydrogenase complex, the two carbons constituting the acetyl group are
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!