The concent (H = 1; C= 12; 0 = 16; Na = 23; S = 32; K = 39) Some dilute sulphuric acid, H2SO4, had a concentration of 4.90 g dm-3. What is its concentration in mol dm-3? What is the concentration in g dm-of some potassium hydroxide, KOH, solution with a concentration of 0.200 mol dm-3? What mass of sodium carbonate, Na, CO3, would be dissolved in 100 cm3 of solution in order to get a concentration of 0.100 mol dm-3