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Can anyone help, define a system and it's surroundings and give the direction of heat transfer 4 the following?
1) Propane is burning in a Bunsen burner in the laboratory.
2) After you have a swim, water droplets on your skin evaporate.
3) Water, originally at 25°C, is places in the freezing compartment of a refrigerator.
4) Two chemicals are mixed in a flask on a laboratory bench. A reaction occurs and heat is evolved.
Will rate the highest for best answer
1) Propane is burning in a Bunsen burner in the laboratory.
a) System is the burner, its fuel, and oxygen
b) Surroundings are the what it is heating and the lab
2) After you have a swim, water droplets on your skin evaporate.
a) System: your skin, the water molecules
b) Surround: the air (room) around you
3) Water, originally at 25°C, is places in the freezing compartment of a refrigerator.
System: The water and ice cube tray
Surround: The freezer
4) Two chemicals are mixed in a flask on a laboratory bench. A reaction occurs and heat is evolved.
System: the two chemicals, the water that they are in, and the flask
Surround: the rest of the lab
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