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| 1. How many moles of carbon monoxide are required to reduce 1 mole of iron(III) oxide completely? |
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| 2. How many covalent bonds are there in a nitrogen molecule? |
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| 3. How many covalent bonds are there in a methanol molecule? |
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| 4. How many hydrogen atoms are there in a molecule of methyl methanoate? |
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| 5. How many fluorine atoms are there in a molecule of the monomer of teflon? |
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| 6. How many hydrogen atoms are there in a molecule of the monomer of PVC? |
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| 7. How many carbon atoms are there in a molecule of the monomer of PP? |
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| 8. How many hydrogen atoms are there in a molecule of methanal? |
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| 9. How many nitrogen atoms are there in a molecule of urea? |
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| 10. How many electrons are required to discharge one Al3+ ion? |
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| 11. How many electrons are required to convert one dichromate ion to two chromium(III) ions? |
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| 12. How many electrons are required to convert one sulphate ion to sulphur dioxide? |
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| 13. If 1 mole of electrons was passed through dilute sulphuric acid, what would be the volume of oxygen in dm3 released at room temperature and 1 atmospheric pressure? |
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| 14. How many moles of electron are required to deposit 1.5 moles of copper at the cathode from a solution of Cu2+ ions? |
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| 15. How many moles of electrons are needed to liberate 1 mole of chlorine gas at the anode form conc. NaCl(aq)? |
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| 16. During the electrolysis of molten NaCl, 1.95g of sodium is formed. What is the approximate yield of chlorine in g? |
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