Khan Academy: Healthy Lifestyle: Low Salt Diet

Find out how much sodium is in some common foods and how you can maintain a low sodium diet. [6:00]

Find out how simple it is to calculate your BMI and the common BMI categories. Rishi is a pediatric infectious disease physician and works at Khan Academy.

Learn some important differences between arteries (high pressure/low volume) and veins (low pressure/high volume). Rishi is a pediatric infectious disease physician and works at Khan Academy. [11:09]

Watch how blood gets diverted away from alveoli with low oxygen levels. Rishi is a pediatric infectious disease physician and works at Khan Academy. [9:13]

Read a passage about the symptoms of low platelet counts and answer the follow-up questions.

See some examples of calculating pH of 0.25 M solution of sodium acetate, and calculating the pH of 0.050 M solution of ammonium chloride. [14:15]

A tutorial about solubility of salt and gas solutes in liquid solvent. [13:22]

Study examples of different kinds of neutralization reactions, and analyze the pH of the resulting salt solution. [7:33]

Learn the importance of sodium in our daily diets as well as the negative effects of excess salt in a person's diet. Contains fact sheets, quizzes and slideshows.

This tutorial describes the two main situations where you get a buffer: making a buffer for a specific pH by combining a weak acid and a salt containing the conjugate base, and using a neutralization reaction by combining a weak acid and...