Question

Only 5 questions! All you have to do is check my answers...1. A flask contains four gases: CH4, O2, C2H5, and N2. When the stopper is removed, which gas will diffuse the fastest?

CH4 <---
O2
C2H5
N2

2. Which gas effuses 2.39 times slower than nitrogen gas?

O2
Cl2
Br2 <---
I2

3. What is the molecular mass of a gas that effuses three times faster than radon?

16 g/mol
25 g/mol <---
50 g/mol
67 g/mol

Answer 1

4. Which of the following explains how two gases at the same temperature can diffuse at different rates?
They have different molar masses, but the same velocities.
They have the same masses, but different velocities.
Their kinetic energies differ, but their masses are the same.
Their kinetic energies are the same, but the smaller molecules have faster velocities. <---

5. A flask contains an equal mixture of oxygen and argon. Which of the following statements is true about the effusion of the gases?
Argon will effuse 1.07 times faster than oxygen.
Oxygen will effuse 1.19 times faster than argon. <---
Oxygen will effuse 5.29 times slower than argon.
Argon will effuse 1.48 times slower than oxygen.

Answer 2

Ugh it doesn't look like you can calculate these so I guess you just look them up

Answer 3

Um, ok...Thanks! I guess I'll just have to figure it out...