Question 1
5.0 g of iron is reacted with 5.0 g of water according to the chemical equation shown below. Which one of the following statements is FALSE?
3Fe(
s) + 4H
2O(
l) → Fe
3O
4(
s) + 4H
2(
g)
◦ Mass is conserved in this reaction.
◦ 2.85 g of H
2O are left over.
◦ 6.91 g of Fe
3O
4 are produced.
◦ Water is the limiting reactant.
Question 2
Calculate the number of grams of solute in 500.0 mL of 0.189 mol L
-1 KOH.
◦ 1.68 × 10
-3 g
◦ 21.2 g
◦ 5.30 g
◦ 1.68 g
◦ 5.30 × 10
3 g