In the above equation how many moles of N2 can be made when 91 moles of CuO are consumed?
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Complete this brønsted-lowry reaction placing each product by its appropriate label. hso4- + hcn

Determine the wavelength of the light absorbed when an electron in a hydrogen atom makes a transition from an orbital in the n=3 level to an orbital in the n=7 level.

This element exists in adundance in the sun.explain how you would go about capturing sunlight.would this captured sunlight contain any of the element?