Khan Academy: Calculations From Circuit Diagrams

Practice identifying the direction of current flow, closed circuits, and open circuits with this multiple choice quiz.

Learn the basics of circuits with this video. Video will define current and resistance to explain how electrons flow to create electricity. [11:39]

Walk through an example problem for calculating the equilibrium constant K using the standard cell potential. [9:37]

A thorough reference providing the definition of equilibrium constant Kp for gas phase reactions, and how to calculate Kp from Kc.

Video provides examples of how to calculate speed and velocity. [11:45]

Practice calculating pressure, volume, temperature, and moles of gas using the ideal gas equation.

Example of calculating energy using the First Law of Thermodynamics. [7:14]

An explanation of calculating solubility. [9:28]

Find out how simple it is to calculate your BMI and the common BMI categories from a pediatric infectious disease physician who works at Khan Academy. [7:20]

Learn how to use three lab values (Sodium, glucose, and BUN) to approximate your plasma osmolarity. Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:57]