Henok is observing the reaction rate of a chemical reaction. he then adds a catalyst to the reaction.
how will the addition of a catalyst affect the reaction rate of the chemical reaction?
it will cause the reaction rate to decrease.
it will not affect the reaction rate.
it will cause the reaction rate to increase.
it will cause the reaction rate to double.

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer

< > according to newton's third law of motion, forces always act in equal but opposite pairs. another way of saying this is for every action, there is an equal but opposite reaction.< >