homework question: A camper heats 30 L of water to the boiling point to purifyit

Question

homework question: A camper heats 30 L of water to the boiling point to purifyit. What volume of water from a 15degreeC stream must she addto get the final temperature of water to 45degreeC ? I need to know what equations to use, step by step how to dothem and the answer for my extra credit homework. Please help ifyou can, Thank you! homework question: A camper heats 30 L of water to the boiling point to purifyit. What volume of water from a 15degreeC stream must she addto get the final temperature of water to 45degreeC ? I need to know what equations to use, step by step how to dothem and the answer for my extra credit homework. Please help ifyou can, Thank you!

Explanation / Answer

There's no phase change, so it's just a simple proportion: V1*T1 + V2*T2 =(V1 + V2)*T3 (30L)*100C + V2*15C = (30L + V2)*45C Solve for V2 (I get 55L).

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