In addition to a beta particle, which of the following directly results from the beta decay of iodine-131?

Question 28
In addition to a beta particle, which of the following directly results from the beta decay of iodine-131?
A. xenon-131
B. bromine-80
C. tellurium-130
D. xenon-132
Question 29
How do catalysts increase the rate of chemical reactions?
A. by reducing activation energy
B. by increasing molecular velocity
C. by shifting equilibrium toward products
D. by stabilizing temperature and pressure