Pls help with this chem question I'm just writing thing because it need to be 20 world long

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

As we move from left to right across the periodic table, what is the general trend? a) atomic radii increase. b) electronegavitiy decreases. c) nuclear shielding increases. d) metallic character decreases.

Afusion reaction takes place between carbon and another element. neutrons are released, and a different element is formed. the different element is a) lighter than helium.b)heavier than helium.c)the same weight as helium.d)dependent on the element that reacted with carbon.