Stoichiometry

6. If 12.2 moles of copper react, how many grams of copper(II) nitrate are produced? 7. How many grams of nitric acid are needed to react with 2.35 grams of copper? 8. How many grams of nitrogen dioxide are produced from 3.78 moles of nitric acid? 9. How many moles of copper are needed to produce 67.9 grams of nitrogen dioxide? 10. ................
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