Quiz 1: Quantitative Chemistry
10
Questions
I
By WlHKIED
Question Excerpt
| 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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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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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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