| 1. | How many grams of NaCl represent 1 mole? |
| a. | 23 |
| b. | 35.5 |
| c. | 58.5 |
| d. | 69.5 |
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Answer: (c).58.5
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| 2. | How many atoms of carbon represent 1.5 mole? |
| a. | 6.022 X 10²³ |
| b. | 1.2044 X 10²³ |
| c. | 3.011 X 10²³ |
| d. | 9.033 X 10²³ |
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Answer: (d).9.033 X 10²³
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| 3. | Calculate the number of moles in 42 grams of NaHCO₃? |
| a. | 0.5 |
| b. | 1 |
| c. | 1.5 |
| d. | 2 |
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Answer: (a).0.5
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| 4. | Calculate the number of moles in 369 grams of Ca°Cl₂? |
| a. | 1 |
| b. | 2 |
| c. | 3 |
| d. | 4 |
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Answer: (c).3
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| 5. | Which of the following has the same number of moles as in 398 grams of CuSO₄? |
| a. | 2 grams of hydrogen |
| b. | 40 grams of oxygen |
| c. | 35 grams of nitrogen |
| d. | 58.5 grams of Sodium chloride |
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Answer: (b).40 grams of oxygen
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