176.36g is the molecular weight of the unknown gas
At equal volumes, t2/t1= √M2 / √M1
Let the molecular mass of the unknown gas be x
16.6/5 = √x /4
√x = 16.4 × 4 / 5 = 13.28
x = 13.28*13.28
x = 176.36g
The entire mass of the atoms required to form a molecule per mole, expressed in grams, is what makes up the molar mass, also known as the molecular weight. Grams per mole are used to measure molar mass. The mass of 1 mole of a material, expressed in M grams, is its molecular weight, also known as its molar mass, abbreviated M. The mass of a given substance's molecules is its molecular weight. While molar mass and molecular weight have distinct definitions and measurement systems, their values are equivalent.
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