how much energy is needed to melt 25.4 g of I2 if enthalpy fusion of I2 is 61.7 J/g
howmuchenergytomelt?=25.4g*61.7J/g
To calculate the energy needed to melt a substance, you can use the following formula:
Energy = Mass * Enthalpy of Fusion
In this case, you want to calculate the energy needed to melt 25.4 g of I2, and the enthalpy of fusion of I2 is given as 61.7 J/g.
So, substituting the values into the formula:
Energy = 25.4 g * 61.7 J/g
Now, you just need to multiply the values:
Energy = 1557.18 J
Therefore, the energy needed to melt 25.4 g of I2 is 1557.18 Joules.