Answer:
I'm Not Good At Chemistry.
Explanation: It's Hard.
Answer:
Explanation:
exothermic reactions involve release of heat whereas endothermic reaction involve absorption of heat.
72g H2O x 1 mol H2O/18.02g H2O = 3.99 mol H2O
Answer: is C
Explanation:
Both the atomic mass and the atomic number increase from left to right
