Study the reaction. CH4 + 2O2 → CO2 + 2H2O

If 4.0 moles of methane (CH4) and 8.0 moles of oxygen (O2) enter this reaction, how many moles of carbon dioxide (CO2) and water (H2O) will be created at the end of the reaction?

4 moles of carbon dioxide and 8 moles of water
4 moles of carbon dioxide and 4 moles of water
8 moles of carbon dioxide and 4 moles of water
1 mole of carbon dioxide and 4 moles of water

There are two steps in the usual industrial preparation of acrylic acid, the immediate precursor of several useful plastics. in the first step, calcium carbide and water react to form acetylene and calcium hydroxide: cac2 (s) + 2h2o (g) → c2h2 (g) + caoh2 (s) =δh−414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) → 5ch2chco2h (g) =δh132.kj calculate the net change in enthalpy for the formation of one mole of acrylic acid from calcium carbide, water and carbon dioxide from these reactions. round your answer to the nearest kj .