The "set-up" for the problem "What is the mass, in grams, of 2.50 × 1022 atoms of Ca?" below is correct, except numbers in the last conversion factor have been replaced by the letters A and B. What are the numerical values of A and B, respectively?
A) 1 mole and 6.02 x 1023 atoms
B) 40.08 g and 1 mol
C) 6.02 x 1023 g and 1 atom
D) 40.08 mol and 6.02 x 1023 atoms
Correct Answer:
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