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April 20, 2014

Homework Help: Chemistry

Posted by Sulon on Saturday, March 26, 2011 at 3:26pm.

1. Ca(OH)2(aq) + H3PO4(aq) Ca3(PO4)2(aq) + H2O(l)

a. If you have 13.7mol of Ca(OH)2, how many grams of H2O are produced?

b. How many grams of H3PO4 are required to produce 102.3g Ca3(PO4)2?



c. How many moles of Ca(OH)2 are needed to produce 82.9g of Ca3(PO4)2?




2. Al2(SO4)3 + Ca(OH)2 Al(OH)3 + CaSO4


a. What mass of Ca(OH)2 is needed to react with 132.8g Al2(SO4)3?

b. How many molecules of CaSO4 are produced if 145g of Al(OH)3 are also produced?

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