A sample of CO2 has a mass of 50.0 grams. What is number of molecules of carbon dioxide in the sample? (C = 12.0 u, O = 16.0 u, and 1 u = 1.66 × 10−27 kg.)
A) 4.02 × 1023
B) 4.95 × 1023
C) 5.66 × 1023
D) 6.02 × 1023
E) 6.85 × 1023
Correct Answer:
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