Jawabanmu

2014-05-05T12:13:36+07:00
500 mL larutan massanya adalah 

m = ρ V 

m = (1.2)(500) 

m = 600 gr 

massa H2SO4 = 0.05 * 600 = 30 gram 

massa air = 600 - 30 = 570 gram 

molalitas, 

m = (w/Mr)(1000/P) 

m = (30/98)(1000/570) 

m = 0.537 molal <--

Semoga membantu :)
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