Question
Asked Nov 30, 2019
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How much heat must be added to a 2 kg block of ice at -11°C to change it to water at 24°C?
A) 230 kcal
B) 59 kcal
C) 70 kcal
D) 220 kcal
E) 190 kcal
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How much heat must be added to a 2 kg block of ice at -11°C to change it to water at 24°C? A) 230 kcal B) 59 kcal C) 70 kcal D) 220 kcal E) 190 kcal

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Expert Answer

Step 1

Heat added is

тx S, x11 + mxL +тxS,x24
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тx S, x11 + mxL +тxS,x24

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Step 2

Substitute the...

T mx Sx11mxL + mxS,x24
T 2x0.5 11+ 79.7x2 2x1x24
220 kcal
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T mx Sx11mxL + mxS,x24 T 2x0.5 11+ 79.7x2 2x1x24 220 kcal

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Physics

Thermodynamics

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