1. 12.1 homework answers

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3. 2 moles of magnesium metal combine with one mole of oxygen gas to form 2 moles of solid magnesium oxide
It’s ionic!
2 atoms of magnesium metal combine with one molecule of oxygen gas to form 2 formula units of solid magnesium oxide
2 moles of hydrogen gas combine with 1 mole of oxygen gas to form 2 moles of water vapor.
2 molecules of hydrogen gas combine with one molecule of oxygen gas to form 2 molecules of water vapor.
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4. 4 moles of nitroglycerin decomposes into 10 moles of water vapor, 12 moles of carbon dioxide gas, 6 moles of nitrogen gas and 1mole of oxygen gas.
g of nitroglycerin decomposes into g of water vapor, g of carbon dioxide gas, g of nitrogen gas and 32.0 g of oxygen gas
One mole of solid calcium carbonate decomposes into 1 mole of solid calcium oxide and 1 mole of carbon dioxide gas
40.08g g + 3( g)]  (40.08 g g) + ( g + 2( g)
= g  g
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