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You are given Na 2 CO 3 • nH 2 O solution in which 10.725g of the salt is dissolved in 50cm 3 solution. The concentration is 0.75 mol/dm 3 . Calculate: a) the concentration in gram/dm 3 of the solution. b) The molar mass of the compound. c) the value of x.

June 2, 2026Chemistry

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Here are the calculations for the given problem.

a) The concentration in $\text{gram/dm}^3$ of the solution.

Convert the volume from $\text{cm}^3$ to $\text{dm}^3$ .
Given volume $= 500 \text{ cm}^3$ .
Since $1 \text{ dm}^3 = 1000 \text{ cm}^3$ :
$\text{Volume in dm}^3 = \frac{500 \text{ cm}^3}{1000 \text{ cm}^3/\text{dm}^3} = 0.5 \text{ dm}^3$
Calculate the concentration in $\text{gram/dm}^3$ .
Given