277047 The molarity of a solution in which $5.3 \mathrm{~g}$ $\mathrm{Na}_{2} \mathrm{CO}_{3}$ is dissolved in $500 \mathrm{~mL}$ will be

277048 A gas $X$ is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of colourless gas $Y$. Identify ' $X$ ' and ' $Y$ ' are respectively

277049 The molar concentration of chloride ions in the resulting solution of $300 \mathrm{~mL}$ of $3.0 \mathrm{M} \mathrm{NaCl}$ and $200 \mathrm{~mL}$ of $4.0 \mathrm{M} \mathrm{BaCl}_{2}$ will be

277050 How many grams of concentrated nitric acid solution should be used to prepare $250 \mathrm{~mL}$ of $2.0 \mathrm{M} \mathrm{HNO}_{3}$ ? The concentrated acid is 70\% $\mathrm{HNO}_{3}$.

277047 The molarity of a solution in which $5.3 \mathrm{~g}$ $\mathrm{Na}_{2} \mathrm{CO}_{3}$ is dissolved in $500 \mathrm{~mL}$ will be

277048 A gas $X$ is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of colourless gas $Y$. Identify ' $X$ ' and ' $Y$ ' are respectively

277049 The molar concentration of chloride ions in the resulting solution of $300 \mathrm{~mL}$ of $3.0 \mathrm{M} \mathrm{NaCl}$ and $200 \mathrm{~mL}$ of $4.0 \mathrm{M} \mathrm{BaCl}_{2}$ will be

277050 How many grams of concentrated nitric acid solution should be used to prepare $250 \mathrm{~mL}$ of $2.0 \mathrm{M} \mathrm{HNO}_{3}$ ? The concentrated acid is 70\% $\mathrm{HNO}_{3}$.

277047 The molarity of a solution in which $5.3 \mathrm{~g}$ $\mathrm{Na}_{2} \mathrm{CO}_{3}$ is dissolved in $500 \mathrm{~mL}$ will be

277048 A gas $X$ is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of colourless gas $Y$. Identify ' $X$ ' and ' $Y$ ' are respectively

277049 The molar concentration of chloride ions in the resulting solution of $300 \mathrm{~mL}$ of $3.0 \mathrm{M} \mathrm{NaCl}$ and $200 \mathrm{~mL}$ of $4.0 \mathrm{M} \mathrm{BaCl}_{2}$ will be

277050 How many grams of concentrated nitric acid solution should be used to prepare $250 \mathrm{~mL}$ of $2.0 \mathrm{M} \mathrm{HNO}_{3}$ ? The concentrated acid is 70\% $\mathrm{HNO}_{3}$.

277047 The molarity of a solution in which $5.3 \mathrm{~g}$ $\mathrm{Na}_{2} \mathrm{CO}_{3}$ is dissolved in $500 \mathrm{~mL}$ will be

277048 A gas $X$ is passed through water to form a saturated solution. The aqueous solution on treatment with silver nitrate gives a white precipitate. The saturated aqueous solution also dissolves magnesium ribbon with evolution of colourless gas $Y$. Identify ' $X$ ' and ' $Y$ ' are respectively

277049 The molar concentration of chloride ions in the resulting solution of $300 \mathrm{~mL}$ of $3.0 \mathrm{M} \mathrm{NaCl}$ and $200 \mathrm{~mL}$ of $4.0 \mathrm{M} \mathrm{BaCl}_{2}$ will be

277050 How many grams of concentrated nitric acid solution should be used to prepare $250 \mathrm{~mL}$ of $2.0 \mathrm{M} \mathrm{HNO}_{3}$ ? The concentrated acid is 70\% $\mathrm{HNO}_{3}$.