The distance between the nuclei of two carbon atoms in its elemental form is (a) 77 pm
(b) 154 pm
(d) 120 pm
(c) 17 pm

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?

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 .

How can the number of core electrons be determined from the periodic table