Estimate the heat that must be supplied by the atmosphere to melt 5 x10^8 kg of lake ice (initially at 0°C),?
and then increase the temperature of the resulting lake water from 0°C to 22°C.
Given: latent heat of fusion of water = 335 kJ kg^-1 at 0°C
heat capacity of water = 4.187 kJ kg^-1 K^-1
PLEASE HELP!!
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Heat required to melt: Multiply mass by latent heat of fusion.
Heat required to raise the temperature: Multiply mass x heat capacity x change in temperature.
Plug in the numbers.