Question 1:
[tex]7.488*10^{-8}[/tex]÷[tex]3.12*10^{2}[/tex]
= [tex] \frac{7.488*10^{-8}}{3.12*10^{2}} = 2.4* 10^{-8-2} = 2.4* 10^{-10} [/tex]
Hence, the answer is A.
Question 2:
Mass = [tex]2.8* 10^{-11} [/tex] grams
New mass = [tex]2.8 * 10^{-8} [/tex] milligrams
Question 3:
[tex]2.085*10^{6} = 2,085,000[/tex]
Hence, the answer is C.
