describe graham's law. hydrogen chloride gas (hcl) diffuses 1.8 times faster than an unknown gas. determine the molar mass of the unknown gas. show your work or explain your answer, giving specific values used to determine the answer.

The molar mass of the unknown gas is 118.26 g/mol.

Explanation:

The Graham's law states that the rate of effusion of gas is inversely proportional to the square root of its molar masses.

Let the rate of the unknown gas be with molar mass of

The Rate of the HCl gas  = (given)

Molar mass of the HCl gas,M = 36.5 g/mol

According to Graham's law:

The molar mass of the unknown gas is 118.26 g/mol.

the answer is 75.0%.