Is being created or destroyed by the chemical reaction? created destroyed neither created nor destroyed If is being created or destroyed, what is the rate at which it is being created or destroyed 9 seconds after the reaction starts? Round your answer to significant digits. Also be sure your answer has the correct unit symbol. If is being created or destroyed, what is the average rate at which it is being created or destroyed during the first 9 seconds of the reaction? Round your answer to significant digits. Also

How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025

Which sample at stp has the same number of atoms as 18 liters of ne at stp

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 .