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How many grams of water at 25°C must be added to a Dewar flask (isolated system)...

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Chemistry

How many grams of water at 25°C must be added to a Dewar flask(isolated system) containing 20 g of ice at -5°C tosatisfy the conditions in (a) through (d)? Compute the entropychange in each case.

Predict the sign of ΔS in each case before doing thecalculation.

a) The final temperature is -2°C; all the water freezes.

b) The final temperature is 0°C; half the water freezes

c) The final temperature is 0°C; half the ice melts

d) The final temperature is 10°C; all the ice melts

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