Phosphoric acid can be prepared by reaction of sulfuric acid with"phosphate rock" according to the equation: Ca3(PO4)2+3H2SO4---> 3CaSO4 + 2H3PO4

What is the molar mass of Ca3(PO4)2?

How many oxygen atoms are there in 1.55mg of Ca3(PO4)2?

Suppose the reaction is carried out starting with 103 g ofCa3(PO4)2 and 75.0 g of H2SO4. Which substance is the limitingreactant?

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One of the major uses of sulfuric acid is the production ofphosphoric acid and calcium sulfate. The reaction is:

Ca₃(PO₄)_2(s)+3H₂SO_4(aq)? 3CaSO_4(s)+2H₃PO_4(aq)

What mass of concentrated sulfuric acid (98.0 %H₂SO₄by mass) must be used to reactcompletely with 164.9 g ofCa₃(PO₄)₂?

Enter your answer to four sig. fig.

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1) Phenol was the first antiseptic. It has the chemical composition 76.57% C, 6.43% H, 17.00% O. The molecular weight of phenol was determined by mass spectroscopy to be 94.114 g/mol. What is the molecular formula for phenol?

2) A 3.5514 g of a chromium oxide was found to contain 2.4299 g of chromium and 1.1215 g oxygen. What is the empirical formula for this chromium oxide?

3) Phosphoric acid is produced by the reaction of calcium phosphate, Ca3(PO4)2, with sulfuric acid. How much phosphoric acid can one make from exactly one US ton (2000 lbs) of calcium phosphate?