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To prevent a condition called the “bends”, deep sea divers breathe a mixture containing, in mole percent, 10.0% O2, 10.0% N2 , and 80.0% He.

ACalculate the molar mass of this mixture.
BWhat is the ratio of the density of this gas to that of pure Oxygen?

Verified Answer :

taskmasters

1.       In order to prevent the condition called “bends”.
He needs to calculate the Molar Mass of the mixture of 10.0% 02, 10.0 % N2 and
80 % He.

So the Answer is letter A. Calculate the molar mass of this mixture.

How to calculate:

Given Numbers : 10.0 % O2

10.0% N2

80 % He

Molar Mass = (.10 x 32g / mol.) + (.10 x 28g / mol.) + (.80 x 4g / mol.)

=> 9.2g / mol.





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