Their identified by the number of protons they have in the nucleus which = their electrons.
I think this is your answer
Because the base is strong, and the acid is weak, the final solution will have a pH greater than seven. This is because the base disassociates more than the acid does. There are more OH- ions than H+ ions.
Answer : The energy required to heat of 1.50 kg iron is, 
Explanation :
Formula used :

or,

where,
Q = heat required = ?
m = mass of iron = 1.50 kg = 1500 g
c = specific heat of iron = 
= initial temperature = 
= final temperature = 
Now put all the given value in the above formula, we get:


Therefore, the energy required to heat of 1.50 kg iron is, 