# If a single electron has a mass of 9.107xx10^-31*g, what is the mass of an electron in kilograms?

May 15, 2017

#### Answer:

$\text{Mass of electron} = 9.107 \times {10}^{-} 31 \cdot k g \ldots \ldots \ldots .$

#### Explanation:

Now $1 \cdot g \equiv {10}^{-} 3 \cdot k g$

And so $9.107 \times {10}^{-} 28 \cdot \cancel{g} \times {10}^{-} 3 \cdot k g \cdot \cancel{{g}^{-} 1} =$

$= 9.107 \times {10}^{-} 31 \cdot k g$

All I have done is to use a ${10}^{3}$ factor to replace the prefix $\text{kilo}$.