Use Avogadro's Number to show that 1 u = 1.66 x 10-27 kg
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- A two phase liquid - vapor mixture of refridgerant a2 is Contained in a ciosed tank at 10 bar. The quality is l60% and the mass of saturated liquid is 25 kg. Calculate the volume of saturated vapor in m*. Use 5 signiigant figures.18.16 A sample of a hypothetical ideal gas has a volume of o.5 m3 at a temperature of 5 °C and a pressure of 250 kPa. a. How many molecules of gas are there in this sample? b. How many moles of gas are there in this sample?(1) Consider 1 mol of an ideal gas at 300 K and 1 atm pressure. Imagine that the molecules are, for the most part, evenly spaced at the centers of identical cubes. Using Avogadro's constant and taking the diameter of a molecule to be 3 x 10-8 cm, find the length of an edge of such a cube and calculate the ratio of this length to the diameter of a molecule. The edge length is an estimate of the distance between molecules in the gas. (2) Now consider a mole of water having a volume of 18 cm³. Again, imagine the molecules to be evenly spaced at the centers of identical cubes and repeat the calculation in (a).
- two parts to a questionNitriding is a process in which nitrogen is allowed to diffuse into the surface of steel for the purpose of increasing the surface hardness of a component. It has been determined that a satisfactory nitrogen case depth is produced in BCC iron after 1 hour at 700°C. How much time is required toproduce a satisfactory case depth if nitriding is carried out at 600°C?