Answer:
1) synthesis MgI2
2) double replacement CuS + (HCl)2
3) double replacement, not sure ab the formula sorry
Increase, because you need heat to melt a solid to a liquid, so the temperature will have to get greater.
The average kinetic energy of colliding particles can be increased by increasing temperature.
B.
That would be true, since most other stats include helium, calcium, etc
