How much NaNo3 must be weighed out to make 50 mL of an aqueous solution containing 70 mg Na+ per ml?

Q. How much $NaN{O}_3$ must be weighed out to make $100mL$ of an aqueous solution containing $23mgofN{a}^{+}permL$?

Q. The $NaN{O}_3$ weighed to make $50mL$ of an aqueous solution containing 70.0 $mg$ $N{a}^{+}$ per $mL$ is _____ $g$. (Rounded off to the nearest integer)

[Given: Atomic weight in $gmo{l}^{-1}$. Na: 23; N: 14; O: 16.]

Q. Find the weight of $NaN{O}_3$ in grams (Rounded off to nearest integer), required to make 50 mL of an aqueous solution containing 70 mg per mL of $N{a}^{+}$ ions

[Given:Atomic weight in $gmo{l}^{-1}[Na:23;N:14;O:16]$

Q. Find the weight of $NaN{O}_3$ in grams (Rounded off to nearest integer), required to make 50 mL of an aqueous solution containing 70 mg per mL of $N{a}^{+}$ ions

[Given:Atomic weight in $gmo{l}^{-1}[Na:23;N:14;O:16]$

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Q. A solution contains $75$ mg of $NaCl$ per mL. To what extent must it be diluted to give a solution of concentration $15$ mg of $NaCl$ per mL of solution?