How many joules of heat are necessary to melt 500g of ice at its freezing point
Look up the heat of fusion for ice and that is dHfusion. Then
q = 500 x dHfusion = ?
To calculate the amount of heat required to melt a substance, you need to use the formula:
Q = m * Lf
where:
Q is the heat energy in joules
m is the mass of the substance in grams
Lf is the specific latent heat of fusion for the substance in joules/gram
In the case of ice, the specific latent heat of fusion (Lf) is approximately 334 joules/gram.
Given that the mass of ice is 500 grams, you can substitute these values into the formula to find the amount of heat energy required:
Q = 500g * 334 J/g
Q = 167,000 Joules
Therefore, 167,000 joules of heat energy are necessary to melt 500 grams of ice at its freezing point.