Chemistry, 26.06.2019 17:00 lindseycagle00
Lakes and ponds which have limestone or calcium carbonate are affected less by acid rain than those which have granite. this is becausea)granite solutions are basic and neutralize the acid rain. b)granite solutions are neutral and are not affected by acid rain. c)calcium carbonate solutions are basic and neutralize the acid rain. d)calcium carbonate solutions are neutral and are not affected by acid rain.
Answers: 1
Chemistry, 21.06.2019 16:30
Acetic acid, hc2h3o2, dissolves and completely dissociates in water and a solvation sphere of water molecules forms around the ions. this solute-solvent interaction
Answers: 1
Chemistry, 22.06.2019 14:40
Choose an equation that represents an enzyme-catalyzed reaction. (a) enzyme + substrate β enzyme-substrate complex (b) enzyme + substrate βββ enzyme + products (c) enzyme + substrate βββ enzyme-substrate complex β enzyme + products (d) enzyme + substrate βββ enzyme-substrate complex β enzyme-substrate complex + products
Answers: 2
Chemistry, 22.06.2019 18:00
The human activities in two locations are described below: location a: rampant use of plastic containers location b: excessive use of pesticides and fertilizers which statement is most likely true? location a will have poor air quality because plastic is biodegradable. location a will experience water scarcity because plastic absorbs moisture. the population of honeybees will increase in location b because production of crops will increase. the population of fish in location b will decrease because the water is contaminated.
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) β c2h2 (g) + caoh2 (s) =Ξ΄hβ414.kj in the second step, acetylene, carbon dioxide and water react to form acrylic acid: 6c2h2 (g) + 3co2 (g) + 4h2o (g) β 5ch2chco2h (g) =Ξ΄h132.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
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