an electron has an atomic mass of 5.4 x 10⁻⁴. if a carbon atom has 6 electrons, what is the combined atomic…

an electron has an atomic mass of 5.4 x 10⁻⁴. if a carbon atom has 6 electrons, what is the combined atomic mass of the electrons in a single carbon atom? answer in scientific notation.\na 3.24 x 10⁻³\nb 3.24 x 10⁻⁴\nc 3.24 x 10⁻⁵\nd 32.4 x 10⁻⁴

an electron has an atomic mass of 5.4 x 10⁻⁴. if a carbon atom has 6 electrons, what is the combined atomic mass of the electrons in a single carbon atom? answer in scientific notation.\na 3.24 x 10⁻³\nb 3.24 x 10⁻⁴\nc 3.24 x 10⁻⁵\nd 32.4 x 10⁻⁴

Answer

Explanation:

Step1: Identify the mass of one electron and number of electrons

The mass of one electron is $5.4\times 10^{-4}$, and a carbon - atom has 6 electrons.

Step2: Calculate the combined mass

We multiply the mass of one electron by the number of electrons. So, $(5.4\times 10^{-4})\times6=(5.4\times6)\times10^{-4}=32.4\times 10^{-4}$. But in scientific notation, the coefficient should be between 1 and 10. We rewrite $32.4\times 10^{-4}$ as $3.24\times 10^{-3}$ (since $32.4 = 3.24\times10^1$ and $32.4\times 10^{-4}=3.24\times10^1\times10^{-4}=3.24\times 10^{-3}$).

Answer:

A. $3.24\times 10^{-3}$