Question

6-02x1020 molecules of a substance weigh 44mg. What is the molar mass of the substance ?
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Answer 1

Explanation:

mass of 6.02 × 10^ 20 molecules is = 44mg = 44 ×10^-3 g

mass of 6.02 ×10^23 molecules = x ( mole concept)

x = 44 × 10^-3 × 6.02×10^23 / 6.02 ×10^20

x = 44 g