MCQ
When light is directed at the metal surface, the emitted electrons
- Aare called photons
- Bhave random energies
- ✓have energies that depend upon the frequency of light
- Dhave energies that depend upon the intensity of light
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$ H_2(g) + Cl_2(g) \to 2HCl(g), \Delta H^o = -185\, kJ$
What is $\Delta U^o$ for this reaction? .....$kJ$