19. Burning coal and oil in a power plant produces pollutants such as sulfur dioxide, SO2. The sulfur-containing compound can be removed from other waste gases, however, by the following reaction:

Question

2 SO2(g) + 2 CaCO3(s) + O2(g)  2 CaSO4(s) + 2 CO2(g)
[Molar masses: 64.07 100.1 32.00 136.2 44.01]
(a) Name the compounds involved in the reaction.
(b) What mass of CaCO3 is required to remove 155 g of SO2?
(c) What mass of CaSO4 is formed when 155 g SO2 is consumed completely?

Answer 1

Surely you know the names.
For b and c follow the steps in this example.
http://www.jiskha.com/science/chemistry/stoichiometry.html