How many joules are needed to raise temperature of 100 grams ice from -80 degrees to -20 degrees?

Here's a hint: You need to know the 'specific heat capacity' of ice to be able to answer that question. Try googling for it, or maybe try wikipedia.

999999999999

F=(9/5)C+32 (9/5)(20)+32=68 so 20 degrees Celsius is equal to 68 degrees Fahrenheit.

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According to the phase diagram of water/sugar system,at 80 degrees celsius, 26 wt% water will disolve 74 wt% of sugar.example, 1000 grams of water can disolve 2846.15 grams of sugar