A tank contains a mixture of oxygen, carbon dioxide, and nitrogen gases has a total pressure of 1450 mmHg. The oxygen comprises 12.5% of the mixture. What is the partial pressure of the oxygen in
kPa?

What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?

What does a numerical subscript following an element in a chemical formula mean?

2-bromo-2-methylbutane undergoes an e1 elimination reaction in the presence of ethanol. in the next reaction only one of the possible products is represented. although the product shown is not the major product of the reaction, notice that there is more than one way it can be produced. complete the mechanism and draw the missing substances.