To determine the solution in moldm^-3, we need to know the number of moles of sodium chloride in the solution.
Number of moles = mass ÷ molar mass
Molar mass of sodium chloride (NaCl) = 22.99 + 35.45 = 58.44 g/mol
Number of moles of NaCl = 2.54 g ÷ 58.44 g/mol = 0.0434 mol
Now we can find the concentration in moldm^-3:
Concentration = number of moles ÷ volume in dm^3
Volume in cm^3 = 100 cm^3 = 0.1 dm^3
Concentration = 0.0434 mol ÷ 0.1 dm^3 = 0.434 moldm^-3
Therefore, the concentration of the sodium chloride solution is 0.434 moldm^-3.
2.54 of sodium chloride were dissolved in water and the solution made up to 100cm^3. What is the solution in moldm^-3
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