Question #9db85

1 Answer
Stefan V.
May 20, 2017

#9 * 10^5"g"#

Explanation:

In order to be able to answer this question, you must know the enthalpy of fusion of water

#DeltaH_"fus" = "333.55 J g"^(-1)#

The enthalpy of fusion tells you the amount of energy needed in order to convert #"1 g"# of a given substance from solid at its melting point to liquid at its melting point.

In your case, you know that in order to convert #"1 g"# of ice at #0^@"C"# to liquid water at #0^@"C"#, you need to provide #"333.55 J"#.

You can thus say that #3 * 10^8# #"J"# of heat will melt

#3 * 10^8 color(red)(cancel(color(black)("J"))) * "1 g ice"/(333.55color(red)(cancel(color(black)("J")))) = color(darkgreen)(ul(color(black)(9 * 10^5color(white)(.)"g ice")))#

The answer is rounded to one significant figure.

If you want, you can convert this to kilograms by using the fact that

www.inchcalculator.com

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