Posted by **Anonymous** on Saturday, October 11, 2008 at 10:01pm.

How long would it take for 1.50 moles of water at 100.0 to be converted completely into steam if heat were added at a constant rate of 19.0 j/s ?

- chemistry -
**GK**, Sunday, October 12, 2008 at 1:28am
If you look up the heat of vaporization per gram (Joul/g):

1. Change 1.5 moles of water to grams (multiply by 18.015 g/mol).

2. (grams)(joules/gram) ---> joules

3. joules / (joules/s) ---> seconds

If you look up the molar heat of vaporization of water (joules/mol):

1. (moles)(joules/mole) ---> joules

2. joules / (joules/s) ---> seconds

- chemistry -
**Anonymous**, Sunday, October 12, 2008 at 9:20am
cannot get ans. please solve

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