Magnesium is obtained from sea water. Ca(OH)2 is added to sea water to precipitate Mg(OH)2. The precipitate is filtered and reacted with HCl to produce MgCl2. The MgCl2 is electrolyzed to produce Mg and Cl2. If 203.0 g of magnesium are recovered from 1300. g MgCl2, what is the percentage yield for this reaction?
Magnesium is obtained from sea water. Ca(OH)2 is added to sea water to precipitate Mg(OH)2. The precipitate is filtered and reacted with HCl to produce MgCl2. The MgCl2 is electrolyzed to produce Mg and Cl2. If 203.0 g of magnesium are recovered from 1300. g MgCl2, what is the percentage yield for this reaction?
Coal gasification is a process that converts coal into methane gas. If this reaction has a percentage yield of 88.5%, what mass of methane can be obtained from 1070 g of carbon?
g
If the percentage yield for the coal gasification process is increased to 95%, what mass of methane can be obtained from 2550 g of carbon?
g
The reactions of oxide compounds to produce carbonates, phosphates, and sulfates are described in the section on oxides in Group 16 of the Elements Handbook. Use those equations (given below) to answer the following questions.
6 CaO(s) + P4O10(s) 2 Ca3(PO4)2(s)
CaO(s) + SO3(g) CaSO4(s)
g
(b) What mass of magnesium carbonate is produced?
g
(c) When 45.7 g P4O10 is reacted with an excess of calcium oxide, what mass of calcium phosphate is produced?
g
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