Based on what you've learned about heat energy, explain the factors that would determine how quickly a piece of meat cooked on a barbecue grill. Why would the amount of water in the meat affect the speed of cooking? (5 points) Think about the variables in the heat equation and about the specific heat capacity of water.

Which statement about the stamps is correct?

Compare and contrast physical changes with chemical changes.

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 .