Question

If the time taken to melt 10g of ice at 0 degree Celsius is 1 minute, how long will it take to vaporize 10g of water at 100 degree celsius using the same heater? Pls show the solution clearly. Thanks

Answers

drwls
The amount of heat generated in 1 minute is 10 g*80 cal/g = 800 cal

You need 10*540 = 5400 calories to vaporize the same mass of water, at 100 C.
At the same heating rate as before, it will take 540/80 = 6.75 times longer to vaporize, or 6.75 minutes.
physicist

Physics - drwls, Thursday, November 15, 2012 at 6:13am
The amount of heat generated in 1 minute is 10 g*80 cal/g = 800 cal

You need 10*540 = 5400 calories to vaporize the same mass of water, at 100 C.
At the same heating rate as before, it will take 540/80 = 6.75 times longer to vaporize, or 6.75 minutes.

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