If 3.011 ×

Molecules have a mass of 20.04 grams,what is the molar mass of this substance?

Name: If 3.011 × Molecules have a mass of 20.04 grams,what is the molar mass of this substance?
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Question

If 3.011 × Molecules have a mass of 20.04 grams,what is the molar mass of this substance?

Quizplus · Accepted Answer

To find the molar mass, divide the mass of the sample (20.04 g) by the number of moles of molecules in the sample (3.011 × 10^23 molecules). 
Molar mass = (20.04 g) / (3.011 × 10^23 molecules) = 40.08 g/mol. Therefore, the correct answer is A.