If a certain radio wave has a wavelength of 4.00 x 10² m, what is the frequency of the wave in Hz​

Suppose you got a low yield of benzoin from your benzoin condensation reaction and thus only have 0.300 g of benzoin to use as the starting material for this reaction. how much concentrated nitric acid should you add? (concentrated nitric acid is 15.8 m). write your answer in the form x.xx ml

What is the maximum amount of al2(so4)3 which could be formed from 15.84 g of al and 12.89 g of cuso4?

Esign techniques and materials that reduce the negative environmental impact of a structure are referred to as