Calculate the energy for a photon of light with frequency of 3.06 x 1011 1/sec. h = 6.62607 x 10-34 Js
C = 2.99792 x 108 m/s

Which of the following is true for the actual yield of a reaction? it is always calculated as a ratio. it is the yield from the excess reactant. it is the yield from the limiting reactant. it is always less than the theoretical yield.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.