Question

6 the density of hydrogen is 0.0763 grams per cubic centimeter. how is this number written in scientific notation? a 7.63 × 10² b 7.63 × 10⁻³ c 7.63 × 10⁻² d 0.763 × 10⁻¹

Explanation:

Step1: Recall scientific - notation form

Scientific notation is $a\times10^{n}$, where $1\leqslant|a|\lt10$ and $n$ is an integer.

Step2: Move the decimal point

For the number $0.0763$, move the decimal point two places to the right to get $a = 7.63$. Since we moved the decimal point two places to the right, $n=- 2$. So $0.0763 = 7.63\times10^{-2}$.

Answer:

C. $7.63\times10^{-2}$