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Material and Energy Balances Quiz Screencasts

Each screencast has at least one interactive quiz during the video. The description above each video provides a brief summary.

Description: Derives average molecular weight given mass or molar compositions.

Description: Discusses plot of temperature vs. mole fraction for an ideal binary solution, including bubble and dew points.

Description: Describes a bypass stream in a process and provides an example problem.

Description: Describes a cubic equation of state (EOS) and demonstrates how a real gas can differ from an ideal gas.

Description: Demonstrates using degree of freedom analysis on a multiple unit process to solve for unknown stream parameters.

Description: Defines and differentiates density, specific volume, and specific gravity.

Description: Solves a material balance problem on a system with a purge.

Description: Describes extent of reaction method for solving material balances with chemical reactions. Includes example.

Description: Explains how to take a problem description and build a flowchart from it.

Description: Overview of SI and American Engineering units used for force.

Description: Defines the term fractional conversion.

Description: A general mass balance is presented and simplifications of the balance are shown for different processes.

Description: Introduction to processes and the general material balance. A short example on a tank with inlet and outlet flow.

Description: Discusses how to use heat of combustion to determine reaction enthalpy

Description: Explains Hess's law and provides an example of how to use it to solve for the heat of reaction for an equation.

Description: Explains how to read on a psychrometric chart: dry bulb temperature, relative humidity, moisture content, dew point temperature, enthalpy, humid air volume, and wet bulb temperature. The simulation is located at https://www.learncheme.com/simulations/mass-energy-balances/reading-a-psychrometric-chart.

Description: Constructs a hypothetical process path to simplify calculations for state functions.

Description: Overview of sensible and latent heats and how to account for phase changes in energy balances.

Description: An introduction to the first law and explanation of the terms in the energy balance.

Description: Defines the different types of pressure. Uses head pressure to solve an example problem.

Description: An introduction to Langmuir Isotherms.

Description: Provides an overview of latent heat. Calculates the heat required to vaporize and condense 100 mol of water at 100°C and atmospheric pressure.

Description: An overview on manometers and how they are used to determine force differentials.

Description: An overview on how to change molar fractions to mass fractions and vice-versa.

Description: A description on the relationship between density, mass flow rate and volumetric flow rate. An example conceptual problem is discussed.

Description: Gives the energy balance for both open and closed systems and compares the two.

Description: Explains reference states and shows how to use them in calculating enthalpy changes for a variety of systems

Description: Describes how to obtain and use a scaling factor.

Description: The rules for significant figures are presented. Examples are given of how to add, subtract, multiply, and divide numbers so that the answer has the correct number of significant figures.

Description: Describes Pressure-Temperature diagram for a single-component.

Description: Introduces saturated and supersaturated solutions. Uses a solubility chart to determine the mass fraction of solute in solution.

Description: Overview of standard conditions (temperature and pressure) and its use with the ideal gas law.

Description: Reviews stoichiometry and limiting reactants.

Description: Compares SI and American units. Discusses base units and derived units.

Description: Describes the different temperature scales.

Description: Explains what the critical point is and shows constant volume process at the critical volume, includes a demo.

Description: Uses three different methods for solving reaction problems.

Description: Uses the extent of reaction method for two reactions.

Description: Introduction to the Virial equation of state.

Description: Discusses the difference between wet and dry basis analysis. Shows how to convert from a wet basis to a dry basis.

Description: Presents the definition of enthalpy, its differential, and its use in energy balances.