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1. Calculate the change in internal energy for a system that is releasing 25.0 kJ of...

1. Calculate the change in internal energy for a system that is releasing 25.0 kJ of heat. Additionally, a volume change occurs resulting in 455.85J of work to be done on the system.

2. According to the following reaction, if you reacted 25.3g of NO with excess O2, how much heat would be released as a result? NO + O2 --> NO2

3. What is the energy of a mole of photons of red light with a wavelength of 632 nm?

Please explain and show each step for each question, thank you :)

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