1. | What is the number of oxygen atoms in one mole of ? |
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2. | Which compound has the empirical formula with the largest mass? |
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3. | When the equation below is balanced for 1 mol of , what is the coefficient for ? |
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4. | Calcium carbonate decomposes on heating as shown below. When 50 g of calcium carbonate are decomposed, 7 g of calcium oxide are formed. What is the percentage yield of calcium oxide? |
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5. | 5 of carbon monoxide, CO(g), and 2 of oxygen, (g), at the same temperature and pressure are mixed together. Assuming complete reaction according to the equation given, what is the maximum volume of carbon dioxide, (g), in , that can be formed? |
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6. | A gas sample occupies a volume at a pressure and a Kelvin temperature . What would be the temperature of the gas, , if both its pressure and volume are doubled? |
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7. | A blast furnace contains 1600 kg of iron(III) oxide ( = 160) and 144 kg of carbon ( = 12). Assuming that they react according to the following equation: what is the limiting reagent and the maximum theoretical yield of iron? |
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8. | Which sample of nitrogen gas, , contains the greatest number of nitrogen molecules? |
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9. | What will be the concentration of sulfate ions in when 0.20 mol is dissolved in water to give 100 of aqueous solution? |
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10. | What volume, in , of 0.200 HCl(aq) is required to neutralize 25.0 of 0.200 (aq)? |
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