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JEE Main 202126 FebruaryEvening Shift
Exam
JEE Main
Year
2021
Date
26 February
Shift
Evening Shift
Subject
Chemistry
Chapter
Some Basic Concepts of Chemistry

JEE Main 2021 · 26 February · Evening Shift · Chemistry · Some Basic Concepts of Chemistry

The NaNO _ 3 weighed out to make 50mL of an aqueous solution...

The NaNO3{NaNO}_{3} weighed out to make 50mL50mL of an aqueous solution containing 70.0mgNa+70 . 0mg{Na}^{+} per mLmL is_ gg. (Rounded off to the nearest integer) [Given : Atomic weight in gmol−1−Na:23;N:14;O:16{gmol}^{- 1} - Na: 23; N: 14; O: 16]

Correct answer

0

Step-by-step solution

Na+{Na}^{+} present in 50ml50ml

=70mg1ml×50ml=3500mg=3.5gm= \dfrac{70mg}{1ml} \times 50ml = 3500mg = 3 . 5gm

moles of Na+=3.523={Na}^{+} = \dfrac{3 . 5}{23} = moles of NaNO3{NaNO}_{3}

weight of NaNO3=3.523×85=12.993gm=13gm{NaNO}_{3} = \dfrac{3 . 5}{23} \times 85 = 12 . 993gm = 13gm

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