1) How many Hydrogen (H) atoms are in 2C4H8O a) 2 b) 3 c) 8 d) 13 e) 16 2) How many Oxygen (O) are in Mg(OH)2 a) 1 b) 2 c) 3 d) 5 3) How many atoms total are in Ca3(PO4)2? a) 3 b) 8 c) 12 d) 13 e) 16 4) How many atoms of oxygen are in two molecule of 2K2CO3? a) 5 b) 6 c) 10 d) 12 5) How many atoms of Potassium (K) are in one molecule of K2CO3? a) 2 b) 6 c) 10 d) 12

Counting Atoms with coefficients and parentheses

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