Is the statement correct or incorrect? explain. a) it is correct. the ashes weigh less than the original wood and this proves that some of the mass was destroyed. b) it is incorrect. ashes look different than wood but the mass of the ashes is the same as the mass of the original wood. c) it is incorrect. look at the ashes under the microscope. these particles will look exactly like the particles in the wood. d) it is incorrect. capture and collect all of the gases given off by the fire and combine these masses with the mass of the left over ashes. this should equal the mass of the original wood.

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 .