Propose a reason for why mercury has such strong cohesion and almost no adhesion. Please explain your answer.

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al

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 .