Ex-CIA Spy: China Is Preparing & We're Not Paying Attention! Here's What Happens If They Takeover!

[Instructor] Here are some equations that are often used in pH calculations. For example, let’s say a solution is formed at 25 degrees Celsius and the solution has a pOH of 4.75, and our goal is to calculate the concentration of hydronium ions in solution…

I Mr. Wonderful here, and welcome to another episode of Ask Mr. Wonderful. Now, you know what I love to do time to time is to invite a guest onto the show to help me answer all of your questions. I’m always amazed by how many questions we get and where we…

Hi everyone, uh my name is Kirsty. Auu, I’m one of the partners at Y Combinator, and I would like to wish you a very warm welcome to this amazing venue for Startup School. This is our first International Startup School that we’ve done, so we’re very excit…

Hi everyone! Welcome to the Homeroom live stream. Very excited about the conversation we’re about to have. But before we jump into that, I’ll make a couple of my standard announcements. First of all, just a reminder that Khan Academy is a not-for-profit …

Daedalus, a master craftsman and architect of the labyrinth of Crete, once created wings made from feathers and wax that would help him and his son Icarus escape their imprisonment. Before they attempted to escape, Daedalus warned Icarus against flying to…

Which shapes are symmetrical? To answer this, we need to know what it means for a shape to be symmetrical. A shape is symmetrical if it has at least one line of symmetry. A line of symmetry, and now that answer is only helpful if we know what a line of sy…