A closed container has 2.04 ⋅ 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?
A. 0.34 grams, because (2.04 ⋅ 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.4068 ⋅ 10^−1 B. 0.37 grams, because (2.04 + 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.71 ⋅ 10^−1 C. 3.41 grams, because (2.04 ⋅ 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.4068 D. 3.71 grams, because (2.04 + 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.71

Question

A closed container has 2.04 ⋅ 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?
A. 0.34 grams, because (2.04 ⋅ 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.4068 ⋅ 10^−1    B. 0.37 grams, because (2.04 + 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.71 ⋅ 10^−1  C. 3.41 grams, because (2.04 ⋅ 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.4068 D. 3.71 grams, because (2.04 + 1.67) ⋅ (10^23 ⋅ 10^−24) = 3.71

Mercury · Answer

multiply (# of atoms) * (mass per atom) to get total mass.