If 87g of `K_(2)SO_(4)` (molar mass=174g) is dissolved in enough water to make 250 mL of solution, calculate sum of concentration of `[K^(+)]+[SO_(4)^(-2).]`

12.5 g of H_(2)SO_(4) are dissolved in water to make 1250 ml of solution. The concentration in normality is :

12 g of H_(2)SO_(4) are dissolved in water to make 1200 ml of solution. The normality of the solution is

25.3 g sodium carbonate, Na_(2)CO_(3) , was dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of Na^(+) and carbonate ions are respectively:

25.3 g sodium carbonate, Na_(2)CO_(3) , was dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of Na^(+) and carbonate ions are respectively:

1.26 g of hydrated oxalic acid was dissolved in water to prepare 250 ml of solution. Calculate molarity of solution

25.3 g of sodium carbonate, Na_(2)CO_(3) is dissolved in enough water to make 250 mL of solution. If sodium carbonate dissociates completely, molar concentration of sodium ions, Na^(+) and carbonate ions, CO_(3)^(2-) are respectively (Molar mass of NaCO_(3)=106g mol^(-1) )

1.26g of crystalline oxalic acid was dissolved in water to prepare 250 ml of solution. Calculate molarity of solution.

1.26 g of hydrated oxalic acid was dissolved in water to prepare 250ml of solution. calculate molarity of the solution.