<span>mass and velocity this is the answer im sure it is</span>
Answer:
i think A.
Explanation:
bc B. makes the molecules hight temp = move faster = more collisions = higher rate, C. it's use is to make reactions rates increase, D. somthung abt more surface area and easier collisions
Answer:
Melting is an example of an endothermic change.
Explanation:
This is because the system absorbs (heat) energy from the surroundings to increase its temperature.
Answer:
56.97kJ
Explanation:
1 mole of N2 reacts with 73.8kJ
0.772 mole of N2 reacts with xkJ
cross multiply
x= 0.772×73.8
=56.97kJ
Could you further explain what you are asking
