How many gram of `H_(2)O` are present in 0.2 mole of it

Explanation

To find out how many grams of \( H_2O \) are present in 0.2 moles, we can follow these steps:

### Step 1: Understand the relationship between moles and mass
The number of moles of a substance is related to its mass and molar mass by the formula:
\[ \text{Number of moles} = \frac{\text{Mass (g)}}{\text{Molar mass (g/mol)}} \]
We can rearrange this formula to find the mass:
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