How many joules of energy are necessary to melt 46.0 grams of ice?
q = mass ice x heat fusion.
To calculate the amount of energy needed to melt a substance, we can use the formula:
q = m * ΔHf
where:
q is the amount of energy (in joules),
m is the mass of the substance (in grams),
ΔHf is the heat of fusion (in joules/gram).
In this case, we need to find the amount of energy required to melt 46.0 grams of ice. The heat of fusion for ice is approximately 334 J/g.
Now, we can plug in the values into the formula:
q = 46.0 g * 334 J/g
Performing the multiplication:
q = 15,364 J
Therefore, to melt 46.0 grams of ice, approximately 15,364 joules of energy are required.