Question

calculate the no. of moles of hydrogen atom in 64 g of methane

Answer 1

Molar mass of methane is 16 g

16g of methane (CH₄) contains 4 moles of Hydrogen atoms

So, 64 g of methane will contain = (64 / 16) × 4 = 16 moles of Hydrogen atoms.

Answer 2

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