A Person Makes Iced Tea by Adding Ice to $80 ^ { \circ } \mathrm { C }$

question 43

Multiple Choice

A person makes iced tea by adding ice to 1.8 kg of hot tea, initially at $80 ^ { \circ } \mathrm { C }$ How many kilograms of ice, initially at $0 ^ { \circ } \mathrm { C }$ are required to bring the mixture to $10 ^ { \circ } \mathrm { C } ?$ The specific heat of water (and tea) is $4186 \mathrm {~J} / \mathrm { kg } \cdot \mathrm { K }$ and the latent heat of fusion of ice is $3.34 \times 10 ^ { 5 } \mathrm {~J} / \mathrm { kg }$

• A) 1.2 kg
• B) 1.7 kg
• C) 1.4 kg
• D) 1.0 kg

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