In sulphur estimation, 0.471 g of an organic compound gave 1.4439 g of barium sulphate. The percentage of sulphur in the compound is ____________ (Nearest Integer)

(Given : Atomic mass Ba: 137 u, S: 32 u, O: 16 u)

Molarity $(\mathrm{M})$ of an aqueous solution containing $x \mathrm{~g}$ of anhyd. $\mathrm{CuSO}_4$ in solution at is . Its molality will be _________ . (nearest integer). [Given density of the solution ]

The mass of sodium acetate $\left(\mathrm{CH}_3 \mathrm{COONa}\right)$ required to prepare of aqueous solution is ________ g. (Molar mass of is )

The molality of a $10 \%(\mathrm{v} / \mathrm{v})$ solution of di-bromine solution in $\mathrm{CCl}_{4}$ (carbon tetrachloride) is ''. ____________ . (Nearest integer)

A protein 'A' contains 0.30% of glycine (molecular weight 75). The minimum molar mass of the protein 'A' is __________ $\times$ 10³ g mol^$-$1 [nearest integer]