1) How many atoms total are in H2SO4 a) 1 b) 3 c) 6 d) 7 e) 9 f) 11 2) How many Hydrogen (H) atoms are in 2C4H8O a) 2 b) 3 c) 8 d) 13 e) 16 3) The chemical formula for calcium carbonate is CaCO3. Which of the models best represents one molecule of calcium carbonate? a) b) c) d) e) 4) How many atoms of each element are in one molecule of CH3CH2OH a) 1 atom of carbon, 1 atom of hydrogen and 1 atom of oxygen b) 2 atoms of carbon, 1 atom of hydrogen and 6 atoms of oxygen c) 2 atoms of carbon, 6 atoms of hydrogen and 1 atom of oxygen d) 6 atoms of carbon, 2 atoms of hydrogen and 1 atom of oxygen 5) How many atoms are in C6H13NO2 a) 4 b) 20 c) 22 d) 24 6) How many Oxygen (O) are in Mg(OH)2 a) 1 b) 2 c) 3 d) 5 7) How many atoms of each element are in one molecule of NH4C2H3O2 a) 1 atom of nitrogen, 4 atoms of hydrogen, 2 atoms of carbon, 3 atoms of oxygen b) 1 atom of nitrogen, 7 atoms of hydrogen, 2 atoms of carbon and 2 atoms of oxygen c) 4 atoms of nitrogen, 7 atoms of hydrogen, 3 atoms of carbon and 2 atoms of oxygen d) 2 atoms of nitrogen, 3 atoms of hydrogen, 2 atoms of carbon and 2 atoms of oxygen 8) How many atoms total are in Ca3(PO4)2? a) 3 b) 8 c) 12 d) 13 e) 16 9) How many atoms are in two molecule of 2K2CO3? a) 3 b) 5 c) 6 d) 10 e) 12 f) 24 10) Which of the models best represents one molecule of NH3? a) b) c) d) e)

Counting Atoms

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