Answers: 2
Chemistry, 22.06.2019 08:00, celestemaria0727
What are the similarities of physical and chemical change ?
Answers: 1
Chemistry, 22.06.2019 14:30, Mlmyers81
Aroom with dimensions 7.00mĂ8.00mĂ2.50m is to be filled with pure oxygen at 22.0âc and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?
Answers: 1
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) â c2h2 (g) + caoh2 (s) =δhâ414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) â 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
2. How many moles in 2.25 x 10^28 molecules?...
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