Problem: Which of the following gases has the lowest average speed at 25°C?a. H2Seb. PH3c. C2H6d. F2 

FREE Expert Solution
100% (209 ratings)
FREE Expert Solution

We’re being asked which gas has the lowest average speed at 25 ˚C.


Recall that the average speed of a gas is given by:



where R = gas constant, T = temperature, and M = molar mass of the gas.


100% (209 ratings)
Problem Details

Which of the following gases has the lowest average speed at 25°C?

a. H2Se

b. PH3

c. C2H6

d. F


Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Kinetic Energy of Gases concept. You can view video lessons to learn Kinetic Energy of Gases Or if you need more Kinetic Energy of Gases practice, you can also practice Kinetic Energy of Gases practice problems .

What is the difficulty of this problem?

Our tutors rated the difficulty of Which of the following gases has the lowest average speed at... as medium difficulty.

How long does this problem take to solve?

Our expert Chemistry tutor, Sabrina took 3 minutes to solve this problem. You can follow their steps in the video explanation above.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Tang's class at USF.