Calculate the molarity of each of the following solutions `:`
`a. 30g` of `Co(NO_(3))_(2).6H_(2)O` in `4.3L` of solution
`b. 30mL` of `0.5 M H_(2)SO_(4)` diluted to `500mL`.

What will be the molarity of 30 mL of 0.5 M H_2SO_4 solution diluted to 500 mL ?

Calculate the molarity (M) of a solution of oxalic acid [(COOH)_(2) . 2H_(2) O] containing 12.6 g of the acid in 100 mL of the solution.

How many grams of H_(2)SO_(4) are present in 500ml of 0.2M H_(2)SO_(4) solution ? .

Calculate the pH of the resulting solution formed by mixing the following solutions: (a) 20ml" of "0.2M" "Ba(OH)_(2)+30mL" of "0.1M" "HCl (b) 2 mL" of "0.1" M "HCl + 10 ml" of "0.01" M "KOH (c ) 10mL" of "0.1" M "H_(2)SO_(4)+10 mL" of "0.1 M KOH .

A 3.00 g sample containing Fe_(3)O_(4), Fe_(2)O_(3) and an inert impure substance, is treated with excess of KI solution in presence of dilute H_(2)SO_(4) . The entire iron is converted into Fe^(2+) along with the liberation of iodine. The resulting solution is diluted to 100 mL. A 20 mL of the dilute solution requires 11.0 mL of 0.5 M Na_(2)S_(2)O_(3) solution to reduce the iodine, present. A 50 mL of the dilute solution after complete extraction of the iodine required 12.80 mL of 0.25 M KMnO_(4) solution in dilute H_(2)SO_(4) medium for the oxidation of Fe^(2+) . Calculate the % of Fe_(2)O_(3) "and" Fe_(3)O_(4) in the original sample.

Calculate molality of 1.2M H_(2)SO_(4) solution? If its density=1.4g//mL

Calculate the molality and molarity of a solution made by mixing equal volumes of 30% by weight of H_(2)SO_(4) (density =1.20g//ml ) and 70% by weight of H_(2)SO_(4) (density =1.60g//mL )

How many grams of H_(2)SO_(4) are present in 400ml of 0.2M H_(2)SO_(4) solution?

Calculate the volume strength of H_(2)O_(2) solution if 50 mL of H_(2)O_(2) solution is diluted with 50 mL of H_(2)O. 20 mL of this diluted solution required 40 mL of M//60 K_(2)Cr_(2)O_(7) solution in presence of H_(2)O_(2) for complete reaction.

Calculate the normality of a solution obtained by mixing 100 mL N/10 H_(2)SO_(4) , 50 mL . N/2 HNO_(3) " and " 25 mL N/5 HCl solutions