then moved 80An ideal gas at 14.7 °C and a pressure of 2.92 x 105 Pa occupies a volume of 3.40 m?. (a) How many moles of gas are present? (b) If the volume is raised to 5.33 m' and the temperature raised to 31.0 °C, what will be the pressure of the gas? (a) Number

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Q: A monatomic ideal gas undergoes an isothermal expansion at 300 K, as the volume increased from 0.02…

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Q: A certain gas has a molecular weight of 30.0, a critical temperature of 310 K, and a critical…

A: Given: M=30 kg/kmol Tcr=310K Pcr=4.5Mpa T=500 K  P=15.0 MPa

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Q: G. T 800 K, P = 5 MPa Region = ? s = ? H. T 743.2 K, P = 4.61 MPa Region = ? h= ?

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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.