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Posted by on Thursday, November 15, 2012 at 4:44am.

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

  • Physics - , 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.

  • Physics - , Sunday, April 17, 2016 at 2:40pm

    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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