Derive a few different forms of the Nernst equation, the relationship between Gibbs free energy and reaction quotient Q. [6:29]

Use the Nernst equation to calculate the cell potential when concentrations are not standard conditions. [11:24]

Use the Nernst equation to calculate cell potential for a concentration cell. [9:32]

This video compares a voltaic cell to an electrolytic cell. [6:51]

Calculate how much zinc deposits on the zinc electrode after 1.0 h when a current of 5.0 A is applied to the battery. [6:54]

Video lesson using a Maclaurin series to approximate a sine function by using a polynomial function. Generalizes the expansion of sine using sigma notation and relates it to the expansion for cosine. [9:24]

Video defining radians. Examples shown for converting radians to degrees and vice versa. [9:55]

This video demonstrates how to solve word problems related to a person's age by setting up and solving equations based on the information given in the problem. There are two sample word problems. [9:57]

Video discussing the causes of the Korean War and the events as it developed. [16:11]

A video overviewing the study of physics. Video reviews basic ideas and famous figures that influence the field. [9:29]

For two weeks in October 1962, Americans held their breath as the Cold War escalated towards a nuclear war. Sal Khan narrates this video that explains what led to the Cuban Missile Crisis, how Kennedy responded, and the result of this...

This video is a comprehensive lesson on the Vietnam War including the causes and effects on our country. Narrated by Sal Khan who utilizes pictures and graphics to teach this lesson in an engaging fashion. [17:41]

Sal Khan narrates this video of a lesson on the Bay of Pigs Invasion. He discusses the causes and effects of this failed endeavor during the Kennedy invasion using pictures and maps to illustrate his commentary. [13:42]

Video expands the examples of linearly independent and linearly dependent vectors shown in the previous video to give a formal definition of linearly dependent vectors. Shows a proof of the definition and then gives an example of using...

Video reviews what the null space of a matrix is and how to calculate it, then relates it to linear independence. Shows that if the vectors are linearly independent then the null space is the zero vector. Also shows that if the null...

Demonstrates how to subtract polynomials when there are multiple variables in each polynomial. [2:10]

This video explains how to convert between units of speed. Practice problems are available. [9:56]

This video demonstrates how to graph an inequality with two variables and check your graph by substituting ordered pairs back into the inequality. Practice problems available. [5:20]

A detailed explanation of the processes of diffusion and osmosis. [18:59]

Explanation of the Koch Snowflake and why it has an infinite perimeter but a finite area. [9:11]

A video lesson proving that the projection of a vector is actually the closest vector in the subspace to the original vector. [9:05]

Video deriving the triple product expansion by expanding the cross product of 3 vectors and then simplifying it to the difference of dot products. [14:25]

Video shows how to use polynomial multiplication to find the volume of a cylinder of given dimensions. The problem requires multiplying a binomial and a trinomial. [4:19]

An explanation of how pH changes during various acid-base titrations. [11:02]