question 7\n1 gram h₂o = ___ milliliters of h₂o\n\nquestion 8\nfor the number 4.5 × 10⁶, which represents…

Question 7

Explanation:

Step1: Recall density formula

Density $\rho=\frac{m}{V}$, for water at standard - conditions, $\rho = 1\ g/mL$.

Step2: Rearrange for volume

$V=\frac{m}{\rho}$, substituting $m = 1\ g$ and $\rho=1\ g/mL$, we get $V=\frac{1\ g}{1\ g/mL}=1\ mL$.

Answer:

1

Question 8

Brief Explanations:

In scientific notation $a\times10^{n}$, the base of the exponential part is 10.

Answer:

C. 10