$4.5 \ g$ of compound $A$ $(MW = 90)$ was used to make $250 \ mL$ of its aqueous solution. The molarity of the solution in $M$ is $x \times 10^{-1}$. The value of $x$ is ............ (Rounded off to the nearest integer)
- A$1$
- B$2$
- C$3$
- D$4$
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Which of the following properties will change when the system containing solution $1$ becomes solution $2$?
$10 \ mol$ of solute $x + 10 \ L$ of water $1 \ L$ of solution $1 + 1 \ mol$ of solute $x + 1 \ L$ of water
(Solution $1$) (Solution $2$)
| $10 \ mol$ of solute $x + 10 \ L$ of water | $1 \ L$ of solution $1 + 1 \ mol$ of solute $x + 1 \ L$ of water |
(Solution $1$) (Solution $2$)
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