let 1kg sample of our solution giving us 980g H2SO4 and 20g solvent (based on the mass %age)
20g solvent = .02kg solvent
980 g H2SO4 / 98 g/mol = 10mol H2SO4 (98g/mol is the molar mass of H2SO4)
10mol H2SO4 / .02kg solvent = 500 molal
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