Scoring scheme: free response 1 pt vitamin c can be added to applesauce to inhibit it from becoming brown in color when exposed to the air. discuss below how this protection occurs based on the reactions of vitamin c and its possible role as a sacrificial antioxidant.

Calculate the frequency of a wave in a spring toy. the wave has a speed of 1.1 meters per second and a wavelength of 0.1 meters. *

Complete each row of the table below by filling in the missing prefix or missing exponent.

)benzene and toluene form nearly ideal solutions. consider an equimolar solution of benzene and toluene. at 20 °c the vapour pressures of pure benzene and toluene are 9.9 kpa and 2.9 kpa, respectively. the solution is boiled by reducing the external pressure below the vapour pressure. calculate (i) the pressure when boiling begins, (ii) the composition of each component in the vapour, and (iii) the vapour pressure when only a few drops of liquid remain. assume that the rate of vaporization is low enough for the temperature to remain constant at 20 °c.