If the reaction of 2A+B → C is a elementary reaction, which choice listed below is true? A: it is a second order reaction B: it is a slow reaction C: it is a second order reaction to B D: it is a second order reaction to A

The rate constant of the reaction changes as the reaction proceeds.

For an elementary reaction, the reaction order is same to the molecularity.

Which<br/>of the following reactions can occur in tropane alkaloids?() A: vitali<br/>reaction B: complexation<br/>reaction C: coordination<br/>reaction D: precipitation<br/>reaction E: condensation<br/>reaction

It is known that the chemical reaction A + B → C + D is a elementary reaction, then it can be inferred that the total order of this reaction is 2.

Which one of the following enzymatic reactions is reversible? ( ) A: The reaction catalyzed by glycogen phosphorylase B: The reaction catalyzed by phosphoglycerate kinase C: The reaction catalyzed by pyruvate kinase D: The reaction catalyzed by fructose bisphosphatase-1 E: The reaction catalyzed by hexokinase

After taking barbiturates, the second morning, the patient feels hangover. This belongs to: A: Residual effect B: Side reaction C: Toxic reaction D: Allergic reaction E: Secondary reaction

______An allergic reaction is a usual reaction to something that normally affects people.

The extreme crises people met in more primitive days are the choices between _____.（ ） A: chemical reaction and physical reaction B: life and death C: short-term reaction and long-term reaction D: fight and flight

It is known that the chemical reaction A + B → C + D is a elementary reaction, then it can be inferred that the total order of this reaction is 2. A: 正确 B: 错误