Asked by Laam

How much ice initially at -4 °C is needed to cool down 250 g of water at 80 °C to 0°C?
Take the specific heat capacity of ice to be 2060 J kg-1°C-1

Answers

Answered by Anonymous
ambiguous...

more ice...none of which melts

OR

less ice...all of which melts

OR

some ice...which partially melts
Answered by Anonymous
but they want exactly just enough.
Heat in = heat to raise ice to 0 from -4 (specific heat of ice * ice mass * 4) + heat to melt ice (heat of fusion of water * ice mass)
=
Heat out = specific heat water * 80 * mass of water
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