Under certain conditions argon (Ar) gas diffuses at a rate of 3.2 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.5 centimeters per second. What is the approximate molar mass of the unknown gas?

10 g/mol

20 g/mol

28 g/mol

56 g/mol

Question

Under certain conditions argon (Ar) gas diffuses at a rate of 3.2 centimeters per second. Under the same conditions, an unknown gas diffuses at a rate of 4.5 centimeters per second. What is the approximate molar mass of the unknown gas?

10 g/mol

20 g/mol

28 g/mol

56 g/mol

joannablackwelder · Answer

$$\frac{ R _{2} }{ R _{1} }=\sqrt{\frac{ M _{1} }{ M _{2} }}$$ where R is rate and M is molar mass

anonymous · Answer

So R2=4.5 R1=3.2 & M1=39.948 M2=X?

joannablackwelder · Answer

Yup :)

joannablackwelder · Answer

Welcome to Open Study! :)