Choose the correct answer for each question.

1. How many grams of lead(II) sulfate will be needed to react with sodium chromate to produce 0.3 kg of lead(II) chromate? Sodium sulfate is also produced.

   1.   ?    236.9 grams of lead (II) sulfate
   2.   ?    281.5 grams of lead(II) sulfate
   3.   ?    222.1 grams of lead(II) sulfate
   4.   ?    222.1 grams of lead(II) chromate
   5.   ?    281.5 grams of lead(II) chromate

2. How many kilograms of iron(III) chloride will form when 165.5 grams of iron and 234.0 grams of chlorine gas completely react in this synthesis reaction?

   1.   ?    0.12 kg iron(III) chloride
   2.   ?    0.48 kg iron(III) chloride
   3.   ?    0.36 kg iron(III) chloride
   4.   ?    0.23 kg iron(III) chloride

3. How many moles of zinc are needed to react with 75 mL of a 0.1 M hydrochoric acid solution, HCl, to produce zinc chloride? Hydrogen gas is also produced.

   1.   ?    3.75 mol zinc
   2.   ?    7.50 x 10^-3 mol zinc
   3.   ?    1.50 x 10^-2 mol zinc
   4.   ?    3.75 x 10^-3 mol zinc

4. How many grams of copper metal are needed to react with 20 mL of 8.0 M nitric acid solution, HNO₃, to produce copper(II) nitrate and hydrogen gas?

   1.   ?    5.08 x 10³ grams of copper
   2.   ?    5.08 grams of copper
   3.   ?    10.2 grams of copper
   4.   ?    4.71 grams of copper

5. How many moles of magnesium oxide are produced when 96 grams of oxygen gas react with 133 grams of magnesium metal?

   1.   ?    3.00 mol magnesium oxide
   2.   ?    6.00 mol magnesium oxide
   3.   ?    5.47 mol magnesium oxide
   4.   ?    2.74 mol magnesium oxide

6. How many moles of oxygen gas would be needed to react with 155 grams of propane gas, C₃H₈, in the combustion reaction?
   

   1.   ?    10.6 mol oxygen gas
   2.   ?    0.71 mol oxygen gas
   3.   ?    17.6 mol oxygen gas
   4.   ?    3.52 mol oxygen gas

7. How grams of water vapor will be collected if 30 grams of hydrogen gas reacts with 224 grams of oxygen gas?

   1.   ?    270 grams of water
   2.   ?    30 grams of water
   3.   ?    540 grams of water
   4.   ?    126 grams of water
   5.   ?    252 grams of water

8. What is the volume (in mL) of a 1.75 M phosphoric acid solution, H₃PO₄, when reacted with 14.0 grams of copper metal? The products of this reaction are hydrogen gas and copper(II) phosphate.

   1.   ?    84 mL H_3PO4
   2.   ?    252 mL H_3PO4
   3.   ?    126 mL H_3PO4
   4.   ?    42 mL H_3PO4

9. When 0.25 moles of iron metal react with 35.5 mL of a 3.5 M copper(II) chloride solution to produce copper metal and iron(III) chloride. How many moles of copper will be produced?

   1.   ?    0.375 mol Cu
   2.   ?    0.250 mol Cu
   3.   ?    0.062 mol Cu
   4.   ?    0.750 mol Cu
   5.   ?    0.124 mol Cu

10. How many milliliters of a 3.0 M sulfuric acid solution, H₂SO₄, be needed to react with magnesium metal to produce 9.0 grams of hydrogen gas? Magnesium sulfate is also produced.

    1.   ?    4.50 x 10³ mL sulfuric acid
    2.   ?    1.35 x 10⁴ mL sulfuric acid
    3.   ?    2.70 x 10⁵ mL sulfuric acid
    4.   ?    1.50 x 10³ mL sulfuric acid

11. How many grams of silver phosphate are produced when 50 mL of a 2.5 M silver nitrate solution reacts with 50 mL of a 1.5 M potassium phosphate solution? Potassium nitrate is the other product.

    1.   ?    17.4 grams of silver phosphate
    2.   ?    25.4 grams of silver phosphate
    3.   ?    31.4 grams of silver phosphate
    4.   ?    15.2 grams of silver phosphate

12. How many moles of hydrogen gas are needed to react with two moles nitrogen gas to form ammonia, NH₃?

    1.   ?    2.0 moles H₂
    2.   ?    6.0 moles H₂
    3.   ?    12.0 moles H₂
    4.   ?    0.66 moles H₂
    5.   ?    3.0 moles H₂

13. Lithium replaces the magnesium in 500 mL of a 6.0 M magnesium chloride solution. Charlie recovers 100 grams of lithium chloride. What is the percent yield of the lithium chloride?

    1.   ?    48.3 %
    2.   ?    39.3 %
    3.   ?    78.6 %
    4.   ?    67.3 %