Endothermic reactions are reactions that proceed by the absorption of heat (energy) while exothermic reactions involve a release of energy.
a) Formation of frost on a car window in winter is an exothermic process as heat is liberated when liquid water freezes to form crystals
b) Formation of water condensate on a glass of ice water is an endothermic reaction since heat is absorbed by the cold water from the glass container thereby cooling it.
c) A decrease in the temperature as ammonium nitrate is added to water is an endothermic reaction
K2so4
the oxidation number of sulphur
2[1]+s+4[-2]=0
2+s-8=0
s=-6
Answer:
D
Explanation:
It is letter D because the temperature at which the rock melts directly depends on the density of the rock
Z sorry if it’s wrong good luck
