1. What is the sulfate ion concentration in a 12 Maqueous solution of Mn(SO4) 2?
2. Calculate the molar concentration of a sulfuric acid solution containing 23.0% by mass of H2SO4.The solution density is 1.398 g/cm3
3. The molality of a solution of ethyl alcohol,(C2H5OH) in water is 0.960 mol/kg. How many grams of alcohol are dissolved in 5.98 kg of water?