Calculate the number of `NA^(+)` ion present in 142 amu of `Na_(2)SO_(4)` in aqueous solution.

Calculate the number of Na^(+) ion present in 710 mg of Na_(2)SO_(4) in aqueous solution (N_(A)=6xx10^(23)) If your answer is x xx 10^(y) (in scientific notation) then fill x in OMR, where x is single digit number

The molarity of the solution containing 7.1g of Na_(2)SO_(4) in 100mL of aqueous solution is

Find number of Na^(+) & PO_(4)^(-3) ions in 250mol of 0.2M Na_(3)PO_(4) solution .

Find number of Na^(+) & PO_(4)^(-3) ions in 250mol of 0.2M Na_(3)PO_(4) solution .

When Na_(2)CO_(3) is added to an aqueous solution of CuSO_(4)

Aqueous solution of Na_(2)CO_(3) is