Ammonium sulfate, (NH4)2SO4, is used in fertilizers. (7.1, 7.2, 7.3, 7.4)
a. What is the mass percent composition of (NH4)2SO4?
b. How many atoms of hydrogen are in 0.75 mol of (NH4)2SO4?
c. How many grams of oxygen are in 4.50 × 1023 formula units of (NH4)2SO4?
d. What mass of (NH4)2SO4 contains 2.50 g of sulfur?
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