Q. What would be the concentration in moles per decimetre cubed of a solution containing 2.1 g of Sodium Hydrogen Carbonate in 250 cm³ of solution?


Na = 23, C = 12, O = 16, H = 1


Q. A solution of dilute Sulphuric Acid has a concentration of 4.9 g dm-3 . What is its concentration in moles per decimetre cubed?


H = 1, S = 32, O = 16


Q. What would be the concentration in grams per cubic decimetre of Potassium Hydroxide solution with a concentration of 0.2 moles per cubic decimetre?


K = 39, O = 16, H = 1


Q. What would be the mass of sodium carbonate dissolved in 100 cm³ of solution in order to get a concentration of 0.1 moles per decimetre cubed?


Na = 23, C = 12, O = 16


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