Khan Academy: Lab Values and Concentrations: Tonicity: Comparing Two Solutions

How quickly do animals evolve? Can comparing different samples of the same fossil answer timeline questions? Scholars use virtual labs to examine fossils and learn about stickleback evolution. They compare pelvic morphology in lakes...

What creatures lurk in the rainforest at night? Meet three of them in one short video. Part of a playlist exploring mammals, the video presents a look at night research in the Amazon. Scientists locate and photograph two bat species and...

Watch how centrifuging your blood decomposes it, and find out what it's made up of. The instructor is a pediatric infectious disease physician. [11:09]

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.

Learn the difference between molarity and molality differ. Rishi is a pediatric infectious disease physician and works at Khan Academy. [8:00]

A video lecture showing how to figure out how to calculate an equivalent and how it relates to a mole. Lecture takes the viewer through several calculations. [10:18]

See how each of these terms tells us something different about a solution. [4:04]

A concentration gradient occurs when the concentration of particles is higher in one area than another. In passive transport, particles will diffuse down a concentration gradient, from areas of higher concentration to areas of lower...

This video lesson from Khan Academy provides information about myocarditis and pericarditis, two types of circulatory system diseases. Students will learn how myocarditis and pericarditis are diagnosed.

Solve problems by using the Law of Moments in this video. Understand that moments is essentially the same concept as torque as explained in this video. [13:49]