Скачать или смотреть Lecture 39 STP conditions and SCMH flow rates

Problem Description: A gas cylinder filled with Nitrogen at STP has a mass of 37.289g. The same container filled with Carbon Dioxide at STP has a mass of 37.440. When filled with an unknown gas at STP,, the container mass is 37.062g. Calculate the molecular weight of the unknown gas and state its probable identity.

This problem is an unsolved question number 5.12 in the textbook by Felder. Ideal gas law is applied for all the three gases at Statndard Temperature and Pressure (STP)and the problem is solved in a simple and straight forward manner.
Later part of the video explains a very important concept of flow rates given in SCMH units. SCMH stands for standard cubic meters per hour. This unit is often used in industries and the video explains how to calculate actual volumetric flow rates and molar flow rates from the SCMH flow rates.