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Chemistry, 22.06.2019 17:00
Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.
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Chemistry, 23.06.2019 08:50
Why are enzymes important to cells? they bring about chemical reactions. they provide structural support. they form the two layers of membranes. they store large quantities of energy.
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Chemistry, 24.06.2019 00:00
Which statements correctly match a chemical name with its formula? use the list of polyatomic ions and the periodic table to you answer. the chemical formula for ammonium carbonate is nh4hco3. the chemical formula for ammonium hypochlorite is nh4clo. the chemical formula for ammonium nitrate is nh4no3. the chemical formula for ammonium phosphate is nh4(po4)3. the chemical formula for ammonium sulfate is (nh4)2so3.
Answers: 3
Is methylene chloride more or less dense than water?...
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