A mixture of carbon(II) oxide and carbon(IV) oxide has a density relative to helium of 9. 11.2 L (STP) of the mixture is taken. 1) Determine the volume fractions (%) and masses of the gases. 2) What pressure (kPa) results if this amount of mixture is placed in a closed 5 L vessel at 27 °C (R = 8.314 J/(mol·K))? 3) The mixture is passed over excess heated copper(II) oxide. By how many grams does the mass of the solid decrease? 4) The gas leaving stage 3 is passed completely through 200 g of 11.2 % potassium hydroxide solution. Calculate the mass fraction (%) of the salt formed. For every part, show the method (reaction equations, formulas, reasoning) and all calculations step by step.
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