15 m2 a metal surface shall be fitted with a 35 µm Chromes are coated with a thick chromium layer. of nobr7.15 g/cm3}. (a) Calculate the mass of chromium to be excreted. (b) Separation takes place from one of the following: CrO3 How long does it take to electrolyte if the current 450 A and effectiveness 90% as a whole. Note: This is the same problem with salt.