# If one gram of water has a volume of one milliliter, what would the mass of one liter of water be in kilograms?

A $1 L$ volume of water has a mass of $1 \cdot k g$ under standard conditions.
$1$ $\text{millilitre}$ of water has a mass of $1 \cdot g$.
And $1 \cdot \cancel{L} \times {10}^{3} \cdot \cancel{m L} \cdot \cancel{{L}^{-} 1} \times 1 \cdot g \cdot \cancel{m {L}^{-} 1}$ $=$ $1000 \cdot g$ $=$ $1 \cdot k g$.