20. Find the humidity ratio of an air that has tab = 27 °C and twb = 20 °C with a relative humidity of 55%. (Use PB = 100 KPa) a. 0.0124 lby/lba b. 0.24 lb,/lba c. 0.133 Kg,/Kga d. 0.0133 Kgy/Kga

Q: For a mixture, the pressure and temperature are independent properities. True Fal

A: For a mixture pressure and temperature are dependent properties. It means that the boiling…

Q: 5) 2.25 moles of an ideal gas with Cv,m (3/2)R initially at T₁ = 310 K and p₁ 1.0 atm are heated to…

A:

Q: A mixture composed of the following gases with concentrations shown in front of each of them: N2:…

A:

Q: Based on the information on steam tables, select the correct description of H20 at T= 300 °C and Vg…

A: The Observation is on the Steam Table which is R-12 or A-4 According to this data the observation is…

Q: 6.(i). Consider CO, is at 25 bar and 25 °C. Use the concept of generalized compressibility to…

A: Given Data:- Pressure (P)=25bar = 25×105 Pa Temperature (T) =25∘C=25+273 =298K…

Q: 10. An ideal monatomic gas goes through the following cycle. It starts at a point a…

A:

Q: Water with mass of 2 kg (initial temperature of water is 10-degree C) and ice with mass of 6 kg…

A: Givenmw=2kgTw=10oCmice=6kgTice=-10oCCwater=4200 J/kgKCice=2100 J/kgKLf=3.34×105 J/kg

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.