Temperature will raise and water will evaporate
They are called isotopes.
It is false because an endothermic reaction will also start when energy is received from the environment when there is no solution involved
Mass for carbon = 12
Mass for hydrogen = 1
Mass for oxygen = 16
Mass for nitrogen = 14
12+1+14+16 = 33
165g / 33g = 5
times all the atoms by 5
C5H5O5N5