Problem: A system releases 255 cal of heat to the surroundings and delivers 428 cal of work. What is the change in internal energy of the system (in cal)?

🤓 Based on our data, we think this question is relevant for Professor All Professors' class at QC CUNY .

FREE Expert Solution
  • Internal energy can be solved by getting the sum of work (w) and heat (q)

ΔE = q + w

  •  Recall that when heat is released from the system to surroundings, sign of q will be negative (exothermic). And when work is being done by the system, sign of w will be negative
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Problem Details

A system releases 255 cal of heat to the surroundings and delivers 428 cal of work. What is the change in internal energy of the system (in cal)?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Internal Energy concept. You can view video lessons to learn Internal Energy. Or if you need more Internal Energy practice, you can also practice Internal Energy practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor All Professors' class at QC CUNY .

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition. You can also practice Chemistry: The Molecular Nature of Matter and Change - Silberberg 8th Edition practice problems.