Question Description
1.200g of water heated from 17.0 degrees Celsius to 23.5 degrees Celsius . What is the amount of thermal energy that been transferred to that mass?
2. beaker contains 360.4g of whiten the liquid state at 100 degrees Celsius . How much energy in KJ is required to convert the liquid water to water vapours?
3. what is the amount of heat energy required to change a 40.0g ice cube at -20.0 degrees Celsius to water at 50.0 degrees Celsius ?

Final Answer

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1.thermal energy=200 x 4.184 x 6.5
=5439.2 joules
2.360.4 x 100 x 2.06
=74242.4
74.2424kj
3.40 x 2.06 x 30
=2472 joule
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