Volume of sodium hydroxide solution = 25.0 ÷ 1000 = 0.025 dm 3 Number of moles of sodium hydroxide = concentration × volume Number of moles of sodium hydroxide = 0.3 mol/dm 3 × 0.025 dm 3 ...

{volume~in~dm^{3}}\) The units for concentration are also shown as g/dm 3, but this means the same as g dm-3. 8 g of sodium hydroxide is dissolved in 2 dm 3 of water. Calculate the concentration ...