# Problem: Exactly 10 mL, of gas A (MM = 15.0 g/mol) effuse through an opening in 2.0 sec. Exactly 10 mL of gas B effuse through the same opening in 8.0 sec. What is the molar mass of gas B? a) 60 g/mol b) 480 g/mol c) 240 g/mol d) 120 g/mol

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###### Problem Details

Exactly 10 mL, of gas A (MM = 15.0 g/mol) effuse through an opening in 2.0 sec. Exactly 10 mL of gas B effuse through the same opening in 8.0 sec. What is the molar mass of gas B?

a) 60 g/mol

b) 480 g/mol

c) 240 g/mol

d) 120 g/mol

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 Effusion concept. You can view video lessons to learn Effusion. Or if you need more Effusion practice, you can also practice Effusion practice problems.

What is the difficulty of this problem?

Our tutors rated the difficulty ofExactly 10 mL, of gas A (MM = 15.0 g/mol) effuse through an ...as medium difficulty.

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What professor is this problem relevant for?

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