h2so4 solution containing 551.6 gram of h2so4 per liter of solution at 20 c has density of 1.3294 g/ml. molality?

molality= molesH2SO4/kg of solvent

molesH2SO4 per liter=551.6/98.??? figure the molmass more accurately...
g solvent per liter= 1329.4-551.6 grams or 0.7778 kg