Answers: 1
Chemistry, 22.06.2019 16:50
Which of the following is an indication that a substance has undergone a chemical change? a. no new product has been formed. b. the color of the substance has not changed. c. the original constitute has not changed. d. the molecular structure has changed.
Answers: 1
Chemistry, 22.06.2019 20:00
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 .
Answers: 3
Chemistry, 22.06.2019 21:00
Which of the following is a physical property flammability heat of combustion solubility and toxicity
Answers: 1
Help me please help fast...
Biology, 16.10.2019 08:00
History, 16.10.2019 08:00
Mathematics, 16.10.2019 08:00
Mathematics, 16.10.2019 08:00
Mathematics, 16.10.2019 08:00
History, 16.10.2019 08:00
Mathematics, 16.10.2019 08:00
Mathematics, 16.10.2019 08:00
Physics, 16.10.2019 08:00
Mathematics, 16.10.2019 08:10
Biology, 16.10.2019 08:10
Social Studies, 16.10.2019 08:10