Question

Cagedie changes saved 9 (01.07 HC) A closed container has 4.02 - 1023 atoms of a gas. Each atom of the gas weighs 1.67. 10-24 grams. Which of the following shows and explains the approximate total mass, in grams, of all the atoms of the gas in the container? (1 point)

Answer 1

The container has

$4.02\times10^{23}$

atoms, and each one weighs

$1.67\times10^{-24}$

grams.

Then, the total weight is

$\begin{gathered} (4.02\times10^{23})(1.67\times10^{-24})=(4.02\times1.67)\times10^{23-24}=6.7\times10^{-1} \\ =0.67 \end{gathered}$

Then, the answer is the second one, 0.67 grams.