Flexible collodion contains 20% w/w camphor and 30% w/w castor oil. how many grams of each would be contained in 30 g of the mixture? (b) the specific gravity of castor oil is 0.955. how many milliliters of the oil is contained in 30 g of the mixture? (c) if the specific gravity of the mixture is 0.781, what are the percent w/v concentrations of lactic acid, salicylic acid, and trichloroacetic acid in the mixture?