2 In which tube is a physical change taking place?
А
B
c
D
water
wate...
Chemistry, 19.03.2021 01:00 lilycious3986
2 In which tube is a physical change taking place?
А
B
c
D
water
water
dilute
hydrochloric
acid
dilute
hydrochloric
acid
iron nail
magnesium
sodium
chloride
calcium
carbonate
Answers: 3
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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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