The number of moles in 36 g of hydrogen is _____

Explanation

To find the number of moles in 36 g of hydrogen, we can follow these steps:

### Step 1: Determine the molecular weight of hydrogen (H₂)
Hydrogen exists as a diatomic molecule (H₂), which means each molecule contains two hydrogen atoms. The atomic weight of hydrogen (H) is approximately 1 g/mol. Therefore, the molecular weight of hydrogen (H₂) is calculated as follows:
\[ \text{Molecular weight of H₂} = 2 \times \text{Atomic weight of H} = 2 \times 1 \, \text{g/mol} = 2 \, \text{g/mol} \]

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