Mary pulls a 236 gram cup (c = 0.84 J/g°C) out of the cabinet that was sitting at room temperature of 22°C. She pours a can of Sprite she got out of the refrigerator (5°C) and
pours it into the cup. If the final temperature of the two combined was 9°C, what was
the mass of Sprite that she poured into the cup? The specific heat of the Sprite is 3.8
J/gºC.

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 .