the density of carbon dioxide is 0.0198 grams per cubic centimeter. how is this number written in scientific…

the density of carbon dioxide is 0.0198 grams per cubic centimeter. how is this number written in scientific notation? a 1.98×10² b 1.98×10³ c 1.98×10⁻² d 1.98×10⁻³

the density of carbon dioxide is 0.0198 grams per cubic centimeter. how is this number written in scientific notation? a 1.98×10² b 1.98×10³ c 1.98×10⁻² d 1.98×10⁻³

Answer

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 $0.0198$, move the decimal point 2 places to the right to get $a = 1.98$. Since we moved the decimal point 2 places to the right, $n=- 2$. So $0.0198 = 1.98\times10^{-2}$.

Answer:

C. $1.98\times10^{-2}$