It depends on the kind of reaction.
In Endothermic reaction, energy is more before reaction than after reaction.
In Exothermic reaction, energy is less before reaction than after reaction.
Answer:
1s2 2s2 2p6 3s2 3p6 3d2 4s2
Explanation:
Answer:increase the quantity of the solid in the reaction
Explanation:
Answer:
E
Explanation:
no of grams in picture c = A+B
= 200+10 =210
for D its also 210 ..... the water already contains the salt .....so the mass of salt has added to the mass of water which is still 210
that's all .... have fun
Its called freezing, the change from a liquid to a gas is called vaporization
