The mass of a hydrogen atom is about 1.67E-24 grams. The mass of a plutonium atom is about 4.05E-22 grams. How many times more grams is an atom of plutonium than an atom of hydrogen?
A.
2.43 × 102
B.
2.43 × 10-3
C.
2.43 × 10-2
D.
2.43 × 103
To find out how many times more grams an atom of plutonium is than an atom of hydrogen, we need to divide the mass of a plutonium atom by the mass of a hydrogen atom:
(4.05E-22 grams) / (1.67E-24 grams) = 2.42 × 10^2
Therefore, an atom of plutonium is about 2.43 × 10^2 times more grams than an atom of hydrogen.
The closest answer choice is A. 2.43 × 10^2.