How many hydrogen atoms are in 2.50 g of pharmacolite, CaHAsO4•2H2O (M = 216.0)? | Stoichiometry

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StoichiometryMCQ

Question

How many hydrogen atoms are in 2.50 g of pharmacolite, CaHAsO4•2H₂O (M = 216.0)?

6.97 × 10^21

2.09 × 10^22

2.79 × 10^22

3.48 × 10^22

✓ Correct

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