Cars, aeroplanes, factories etc
B will make little difference to reaction rate while C and D will reduce the reaction rate. So the answer is A. adding heat energy to the reactants
.
This is all no chemistry but the answer is C
1. alpha particle
alpha particles are positively charged helium nuclei with weak penetrating power
Answer:
89.1 N
Explanation:
W = m gm = 55.0 x 1.62 = 89.1 N
