222 g of ice at -11.0°C is put in 499 g of water at 89.0°C. All of the ice melts. What is the final temperature of the water? Answer in units of °C

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Evaluate this exponential expression,8. (2 + 3)2 – 42

How many grams of aluminum will there be in 98g of al2o3?

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 .