(A) The formula for molarity is: $M = \frac{w \times 1000}{m \times V(mL)}$Where:$w = \text{mass of solute in } g$$m = \text{molar mass of solute} = 8

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(A) The formula for molarity is: $M = \frac{w \times 1000}{m \times V(mL)}$Where:$w = \text{mass of solute in } g$$m = \text{molar mass of solute} = 82.0245 \ g \ mol^{-1}$$V = \text{volume of solution} = 500 \ mL$$M = \text{molarity} = 0.375 \ M$Rearranging for $w$:$w = \frac{M \times m \times V(mL)}{1000}$$w = \frac{0.375 \times 82.0245 \times 500}{1000}$$w = 15.3796 \approx 15.38 \ g$

Class 12 Chemistry Solutions Method of expressing concentration of solution

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Calculate the mass of sodium acetate $(CH_3COONa)$ required to make $500 \ mL$ of a $0.375 \ M$ aqueous solution. The molar mass of sodium acetate is $82.0245 \ g \ mol^{-1}$. (in $g$)

A
$15.38$
B
$30.76$
C
$7.69$
D
$41.01$

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Method of expressing concentration of solution

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The correct relationship between molality $(m)$ and molarity $(M)$ of a solution is ($d = $ density in $g/mL$ and $M_{solute} = $ molar mass of solute in $g/mol$)

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Calculate the mass of sodium acetate $(CH_3COONa)$ required to make $500 \ mL$ of a $0.375 \ M$ aqueous solution. The molar mass of sodium acetate is $82.0245 \ g \ mol^{-1}$. (in $g$)

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What is meant by a binary solution?

Assertion: One molal aqueous solution of glucose contains $180 \, g$ of glucose in $1 \, kg$ water.Reason: Solution containing one mole of solute in $1000 \, g$ of solvent is called one molal solution.

The density of $3 \ M$ solution of $NaCl$ is $1.25 \ g \ mL^{-1}$. Calculate the molality of the solution.

If $98 \, mg$ of $H_2SO_4$ is present in $100 \, g$ of solution,what is the molarity of the solution? (Given: density of solution = $1.25 \, g/mL$)

The correct relationship between molality $(m)$ and molarity $(M)$ of a solution is ($d = $ density in $g/mL$ and $M_{solute} = $ molar mass of solute in $g/mol$)

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Assertion: One molal aqueous solution of glucose contains $180 \, g$ of glucose in $1 \, kg$ water.
Reason: Solution containing one mole of solute in $1000 \, g$ of solvent is called one molal solution.