In lab, we put a piece of zinc in 50mL of 3M HCl, and there are 3 follow-up questions I don't know how to do it?
Table: Before the reaction:
-Mass of dry beaker 115.96g
-Mass of dry beaker+zinc 117.96g
After the reaction:
-Mass of dry beaker+zinc 117.38g
1. Suggest a reason why the reaction started very slowly then increased after a few minutes.
2. How would the results compare if twice the mass of zinc were used in this experiment?
3. a. How would the results compare if twice the amount of acid were added?
b. How would this affect the amount of hydrogen produced?

Question

In lab, we put a piece of zinc in 50mL of 3M HCl, and there are 3 follow-up questions I don't know how to do it?
Table: Before the reaction:
          -Mass of dry beaker 115.96g
          -Mass of dry beaker+zinc 117.96g
          After the reaction:
         -Mass of dry beaker+zinc  117.38g
1. Suggest a reason why the reaction started very slowly then increased after a few minutes.
2. How would the results compare if twice the mass of zinc were used in this experiment?
3. a. How would the results compare if twice the amount of acid were added?
b. How would this affect the amount of hydrogen produced?