# . If 35.3 grams of N 2 react with excess hydrogen, how many grams of ammonia (NH 3 ) are produced?

.  If 35.3 grams of N2 react with excess hydrogen, how many grams of ammonia (NH3) are produced?

N2(g)  + 3 H2(g)  → 2 NH3(g)

2.  How many grams of NaNO3 are produced when 315 grams of AgNO3 reacts with excess Na3PO4?

3 AgNO3(aq)  +  Na3PO4(aq)  →  Ag3PO4(s) + 3 NaNO3(aq)

3.  How many grams of magnesium chloride are produced when 89.7 g of magnesium reacts with hydrochloric acid?

Mg(s)  +  2 HCl(aq)  →   MgCl2(aq)  + H2(s)

4.  When 523 grams of KClO3 decomposes, what mass of KCl is formed?

2 KClO3(s)  →  2 KCl(s)  +  O2(g)

5.  How many moles of carbon dioxide can be produced from 74.9 grams of C3H8 with excess oxygen?

C3H8(g)  +  5 O2(g)  →  3 CO2(g) + 2 H2O(g)

6.  How many liters of carbon dioxide at STP could be prepared from 94.5 grams of oxygen?

2 CO(g)  +  O2(g)  →  2 CO2(g)

7.  Calculate the number of grams of Ca(OH)2 that are produced by placing 23.9  grams of CaO in water.

CaO(s) + H2O(l)  →  Ca(OH)2(s)

8.  How many moles of oxygen will be formed when 35.0 mol of H2O2 decomposes?

2 H2O2(l)  →  2 H2O(l) + O2(g)

9.  Chlorine gas is bubbled through an aqueous solution of magnesium bromde.

MgBr2(aq) +   Cl2(g) → MgCl2(aq) + Br2(l)

If a chemist needs 145.3 grams of Br2, how many moles of Cl2 are needed to react with excess magnesium bromide?

10.  In the reaction, 6 CO2(g) + 6 H2O(g) → C6H12O6(s) + 6 O2(g) , how many grams of C6H12O6 will be produced when 73.9 grams of CO2 react with excess water?