Determine the volume of hexane that contains 5.33 × 1022 molecules of hexane. the density of hexane is 0.6548 g/ml and its molar mass is 86.17 g/mol.

we are asked to find the volume of hexane. Density is mass per given volume.

1 mol of any substance is made of 6.022 x 10²³ units, these units could be atoms making up an element or molecules making up a compound.

the number of molecules in hexane has been given therefore we can find the number of moles of hexane

6.022 x 10²³ molecules make up - 1 mol

therefore 5.33 x 10²² molecules make - 1 / (6.022 x 10²³) x 5.33 x 10²²

                                                               = 0.0885 mol

since we know the molar mass and number of moles, mass of hexane can be calculated

mass of hexane = 86.17 g/mol x 0.0885 mol = 7.63 g

density has been given, therefore we can find the volume

volume = mass / density

volume = 7.63 g / 0.6548 g/ml = 11.7 ml

volume of hexane is 11.7 ml

the answer is learned

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.