Question

2 questions, help, i don't care if you google them, and you can just answer one if you want, as

Answer 1

Question 1:

$7.488*10^{-8}$÷$3.12*10^{2}$

= $\frac{7.488*10^{-8}}{3.12*10^{2}} = 2.4* 10^{-8-2} = 2.4* 10^{-10}$

Hence, the answer is A.

Question 2:

Mass = $2.8* 10^{-11}$ grams

New mass = $2.8 * 10^{-8}$ milligrams