Josephine reacts $10\mathrm{.}0$mL of $0\mathrm{.}50$M HCl with $10\mathrm{.}0$mL of $0\mathrm{.}50$M KOH. The solution experienced a

temperature rise of six degrees Celcius. If she doubles the volume of acid and base she used $($while not

changing the concentrations$),$would the temperature rise be half of the original $$T $(3$C$),$the same as

the original $$T $(6$C$)$or twice that of the original $$T $(12$C$)?$Justify your answer.

a$.$List two things that are necessary for an

effective collision at the molecular level.

b$.$List one way a student can increase the rate

that his rock salt $($magnesium sulfate pieces$)$

reacts with acid.