determine the empirical formula of the compound formed when 1.2g of magnesium reacts with 3.55g of chlorine. take the molar mass of magnesium and chlorine to be 24g and 35.5g.​

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Will mark brainliest how many electrons can be held in the energy level n = 4?

)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.