Multiple Choice
The natural abundance of calcium in the earth's crust is 3.4% by mass. How many calcium atoms are present in a 1.50 g sample of the earth's crust?
A) 6.6 × 1023 atoms
B) 3.1 × 1022 atoms
C) 7.7 × 1020 atoms
D) 7.7 × 1022 atoms
E) 5.1 × 1020 atoms
Correct Answer:
Verified
Correct Answer:
Verified
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