How much heat is required to change 150.0 g of water from 21.0 °C to 45.0°C

When it asks how much heat it is required to change the temperature then it is called specific heat capacity, and when it says how much heat required TO CHANGE THE STATE then it is latent heat so here we will do by formula of

           Q = mcT

where q is heat

          m is mass

           T is change in temperature which is going to be 24 here

put all the values you will get the answer

HOPE IT HELPS!