Which of the following weigh the most?

Options

A. One mole of water
B. one gram atomof nitrogen
C. One molecule of `H_(2)SO_(4)`
D. one mole of sodium

Explanation

To determine which of the following weighs the most, we need to calculate the molar mass of each substance mentioned in the question.

1. **1 mole of water (H₂O)**:
- The molar mass of water can be calculated as follows:
- Hydrogen (H) has an atomic mass of approximately 1 g/mol. Since there are 2 hydrogen atoms in water, the total mass from hydrogen is:
\[ 2 \times 1 \, \text{g/mol} = 2 \, \text{g/mol} \]
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