Homework Help: Chemistry

Posted by Ellen on Sunday, October 10, 2010 at 9:36pm.

Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of Helium is present in a helium-oxygen mixture having a density of 0.538 g/L at 25 degrees C and 721 mmHg?
Express your answer numerically as a percentage.

Chemistry - Ellen, Sunday, October 10, 2010 at 9:37pm
sorry. didn't mean to post twice

Answer this Question

Related Questions

Chemistry - Helium-oxygen mixtures are used by divers to avoid the bends and are...
chemistry - Helium-oxygen mixtures are used by divers to avoid the bends and are...
Chemistry - Helium-oxygen mixtures are used by divers to avoid the bends and are...
chem - Helium-oxygen mixtures are used by divers to avoid the bends and are used...
Chemistry - Helium - oxygen mixture is used by deep sea divers in preference to ...
chemistry - A breathing mixture used by deep-sea divers contains helium, oxygen...
chemistry - A bearthing mixture used by deep-sea divers contains helium, oxygen...
chemistry - What are some applications of Nuclear Chemistry in Medicine? So far ...
physics - assume a diver breathes a mixture of Oxygen and Helium. by weight what...
chemistry - A sample of a breathing mixture for divers comtained 34.3% helium, ...

For Further Reading

First Name:
School Subject:
Answer: