Chemistry, 23.09.2019 17:30, lestessanders02
Which is the best description of a scientific theory?
a. a statement about how two different variables are related
b. a collection of laws that are explained the same way
c. an explanation of many observations and tested hypotheses
d. an accepted fact that has always been observed to be true
Answers: 2
Chemistry, 22.06.2019 10:30, kdenormandie3122
Geothermal energy for industrial use is available almost anywhere. a. true b. false
Answers: 2
Chemistry, 22.06.2019 20:00, 20calzoy
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
Which is the best description of a scientific theory?
a. a statement about how two different...
a. a statement about how two different...
English, 30.09.2019 12:20
Health, 30.09.2019 12:20
Spanish, 30.09.2019 12:20
Biology, 30.09.2019 12:20
Mathematics, 30.09.2019 12:20
Arts, 30.09.2019 12:20
Social Studies, 30.09.2019 12:20
Mathematics, 30.09.2019 12:20