A vessel contains at 1 bar and 20°C a mixture of 1 mole of CO; and 4 moles of air. Calculate for the mixture: (i) The masses of CO,, Oz and N3; (ii) The percentage carbon content by mass; (iii) The apparent molecular weight and the gas constant for the mixture; (iv) The specific volume of the mixture; (v) If the mixture is heated at constant pressure to 100°C, find the changes in internal energy, enthalpy and entropy of the mixture.

A vessel contains at 1 bar and 20°C a mixture of 1 mole of CO; and 4 moles of air. Calculate for the mixture: (i) The masses of CO,, Oz and N3; (ii) The percentage carbon content by mass; (iii) The apparent molecular weight and the gas constant for the mixture; (iv) The specific volume of the mixture; (v) If the mixture is heated at constant pressure to 100°C, find the changes in internal energy, enthalpy and entropy of the mixture.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Pure Substances

A substance with fixed chemical composition throughout is called a pure substance like water, air, and nitrogen. A pure substance does not have to be a single element or compound. A mixture of two or more phases of a pure substance is also a pure substance as long as the chemical composition is the same for all phases. These substances mainly have a constant/ uniform composition. The substances also have fixed boiling and melting points. A pure substance takes part in a chemical reaction to form predictable products.

Question

A vessel contains at 1 bar and 20°C a mixture of 1 mole of CO; and 4 moles of air. Calculate
for the mixture:
(i) The masses of CO, O, and N2:
(ii) The percentage carbon content by mass;
(iii) The apparent molecular weight and the gas constant for the mixture;
(iv) The specific volume of the mixture;
(v) If the mixture is heated at constant pressure to 100°C, find the changes in internal
energy, enthalpy and entropy of the mixture.

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