According to the second law of thermodynamics, heat energy released by an organism is gone forever used by another animal released into the environment and unusable absorbed by plants for photosynthesis

Which compound contains both ionic and covalent bonds? a) hbr b)cbr4 c)nabr d) naoh

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

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 .