Question

question 37 (4 points) the mass of a single carbon - 12 atom in amu is 1 amu. given that 1 amu = 1.6606×10^(-24) g, the mass in grams of a single carbon - 12 atom is 2 g. a. 12.0107 b. 12.0000 c. 1.9927×10^(-23) d. 7.2263×10^(24) e. 1.3838×10^(-25) f. 1.3826×10^(-25) g. 1.9945×10^(-23)

Explanation:

Step1: Recall carbon - 12 mass in amu

By definition, the mass of a single carbon - 12 atom is 12.0000 amu.

Step2: Convert amu to grams

We know 1 amu = 1.6606×10⁻²⁴ g. So for a 12 - amu carbon - 12 atom, the mass in grams is $m = 12\times1.6606\times10^{-24}\text{ g}=1.99272\times 10^{-23}\text{ g}\approx1.9927\times 10^{-23}\text{ g}$.

Answer:

1. B. 12.0000
2. C. 1.9927×10⁻²³