10. If the calcium oxide were obtained by the heating of calcium hydroxide, how much hydroxide would be needed to obtain the 15.0 g?
11. If the 15.0 g of calcium oxide in the above problems were allowed to react with water, what amount of calcium hydroxide would be produced?
12. How much magnesium sulfate is needed to completely react with 145 g of sodium chloride? How much sodium sulfate could be produced by this reaction? What other product is formed and in what quantity?
13. In nature, carbon dioxide in the atmosphere reacts with calcium hydroxide to produce calcium carbonate. This calcium carbonate will react with carbonic acid to form calcium carbonate. What mass of calcium bicarbonate would eventually be produced by the action of carbon dioxide on 1.0 g of calcium hydroxide?
14. 75.0 g of zinc are added to 120 g of sulfuric acid. How much hydrogen gas is evolved?
15. 120 g of sulfuric acid are added to 230.0 g of barium peroxide. Which reactant is in excess and by how much? How much barium sulfate is precipitated in this reaction?
16. How much ammonia is evolved when 34 g of ammonium chloride are added to 37 g of potassium hydroxide?
17. How many grams of carbon dioxide can be obtained from the action of 100.0 g of sulfuric acid on 100.0 g of calcium carbonate?
18. Will 45 g of calcium chloride completely precipitate silver chloride from 100.0 g of silver nitrate?
19. It is desired to prepare 100.0 g of silicon tetrafluoride by adding hydrogen fluoride to silicon dioxide. How many liters of hydrogen fluoride will be required for this process at STP?
20. When black gunpowder explodes, potassium nitrate, carbon, and sulfur react with each other to form nitrogen, carbon dioxide, and potassium sulfide. If thee original mixture contains 50.0 g of potassium nitrate, what is the total volume of the gases produced in the reaction (at STP)?
21. Very hot zinc will react with steam to form zinc oxide and hydrogen. What volume of steam would be necessary in order to use up 20.0 g of zinc completely? What volume of hydrogen would be produced in this case?
22. In the preparation of sulfuric acid, sulfur dioxide must be catalytically oxidized to sulfur trioxide. How much oxygen must be available to convert 50.0 L of sulfur dioxide according to this process?
23. Vanadium metal is prepared by reacting vanadium chloride (VCl2) with hydrogen. How many L of hydrogen are needed to release 1.0 g of vanadium metal? How many grams of vanadium chloride are needed for this operation?

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  1. You try first.

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  2. i just need help to set them up

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  3. Most of these are stoichiometry problems with some limiting reagent problems. Here are two links to help you do all of these problems. Just follow the steps.

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