Agas diffuses 1/7 times faster than hydrogen gas (h2). what is the molar mass of the gas? 100.10 g/mol 98.78 g/mol 86.68 g/mol 79.98 g/mol

98.78 g/mol.

Explanation:

Thomas Graham found that, at a constant  temperature and pressure the rates of effusion  of various gases are inversely proportional to  the square root of their masses.

∨ ∝ 1/√M,

where, ∨ is the rate of effusion and M is the atomic  or molecular weight of the gas particles.

∨₁/∨₂ = √M₂/√M₁.

∨₁/∨₂ = 1/7,

M₁ = ??? g/mol, M₂ = 2.01588 g/mol.

∴ (1/7) = (√2.01588)/(√M₁)

By squaring both sides:

∴ (1/7)² = 2/(M₁) = 0.02

∴ M₁ = 2.01588/0.02 = 98.778 g/mol ≅ 98.78 g/mol.

a. they are both space stations

happy to

pls mark as brainliest.

no, the red giant is the hottest with 2.00.000.000 degrees celsius. while the white dwarf only 25,000 degrees celsius.