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# Thermochemistry, aid needed!?

How much heat is necessary to get 150.0ml of water at 50.0 degrees celsius to form into steam at 100 degrees Celsius?

I derived 12750 Joules, significant numbers not applied. Is this correct

Update:

And in the case that temperature change is zero in a thermochemistry equation, would you just not include it. (q=C X g X deltaT)?

### 1 Answer

Relevance

- PhilippeLv 79 years agoFavorite Answer
Hi Mark,

Cw = 4,184 J/g

Lf = 2256 J/g

Q = m x C x (Tf - Ti) + Lf x m

Q = 150 x 4,184 x (100 - 50) + 2256 x 150

Q = 369780 J

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