how much heat is required to melt 15 g of ice which is at a temperature of 0 degrees celsius
q = heat needed = mass ice x heat fusion = ?
To determine the amount of heat required to melt a certain mass of ice, you can use the formula:
Q = m * ΔHf
Where:
Q is the heat energy required (in joules)
m is the mass of the ice (in grams)
ΔHf is the heat of fusion for ice, which is the amount of energy required to convert a unit mass of ice to water at its melting point (0°C for ice) - it is equal to 334 J/g.
In this case, the mass of ice is given as 15 g, and the heat of fusion for ice is 334 J/g:
Q = 15 g * 334 J/g
Q = 5010 J
Therefore, 5010 joules (J) of heat energy are required to melt 15 grams of ice at 0 degrees Celsius.
Keep in mind that this calculation assumes there is no change in temperature during the phase change (from solid to liquid).