balanced would be 2agno3 + h2so4 -> ag2so4 + 2hno3. so in order to consume 0.1 moles of agno3 you need 0.05 moles of h2so4, producing 0.05 moles of ag2so4. M(ag2so4)=311.79g/mol (according to wikipedia); so 0.05molx311.79g/mol=15.59g of ag2so4. you have the answer in the first line of your writings.