The sun has been up for several hours, and it has been shining on these trees. what can the trees do because they are in the sunlight? what does this mean for the number of energy storage molecules in the trees? the trees can . .

a give off carbon to the air. giving off carbon allows them to make energy storage molecules.

b give off carbon to the air. giving off carbon uses up energy storage molecules.

c take in carbon from the air. the carbon is used to make energy storage molecules.

d take in carbon from the air. the carbon is used to break down energy storage molecules.

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 .