While browsing around the lab one day, you find a white solid in a dusty bottle with a faded label. Upon closer inspection, you find that the label says "CxHyOz", from which you gather that the chemical contains carbon, hydrogen, and oxygen. The fragrant odor of the compound piques your curiosity, and you decide to figure out its chemical formula. You make the following observations (use 9.807 m s-2for the acceleration due to gravity):Dissolving 0.100 g of the solid into 200 mL of ethanol at 25.0 °C yields a solution with a density of 0.844 g· cm-3. On the osmotic pressure setup shown on p.362 of Atkins / Jones (refer to Toolbox 9.2), this same solution has a height, h, of 90.08 cm. Upon ideal combustion, 200 g of the white compound forms 471 g of CO2 and 128 g of H2O according to the unbalanced reaction:
CxHyOz+ O2(g) → CO2(g) + H2O(g)(3)
a) Calculate the molecular weight of the white solid.
b) Balance equation (3) for the general case of CxHyOz
c) Determine the chemical formula of this compound.