Problem set-up must be shown. 1. Methane gas (CH4) bums in oxygen to produce water and carbon dioxide (CO2). If 100.0g of methane gas are bumed at home in sufficient oxygen, calculate the amount in moles and in grams of water produced. 2. Consider the reaction (a) How much H2 gas is produced from Zn and from HCl ? (b) Which is the limiting reactant, Zn or HCl? 3. A careless but smart student in Chemistry 111 is performing an experiment using concentrated sulfurie acid H2SO4. If the student spills 10.0mL of this acid on the work station and has to clean it quickly with soda ash to prevent corrosion, how much soda ash must be used? Concentrated H2SO4 is 18.0M Assume the reaction between the two is H2SO4+Na2CO3Na2SO4+CO2+H2O 4. When limestone (calcium carbonate) is heated, it forms calcium oxide and carbon dioxide