Civil Rights and Civil Liberties – Course Trailer
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Civil Rights and Civil Liberties – Course Trailer

– The United States’ Declaration of Independence reads, we hold these truths to be self-evident that all men are created equal, that they are endowed by their creator with certain unalienable rights. That sounds great, but who does it apply to? And what are those rights? That’s what we are going to discuss in these […]

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Introduction to frames of reference
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Introduction to frames of reference

– [Instructor] What I’d like to do in this video is talk about the notion of a frame of reference and this is an introductory video. In future videos, we’ll go into a lot more depth, but a frame of reference is really the idea it’s a point of view from which you are measuring […]

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Worked example  Percent composition of a mixture
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Worked example Percent composition of a mixture

– [Instructor] We’re told that a 0.450 gram potassium supplement contains 22% potassium by mass. The potassium is present in the supplement as potassium chloride, which has a molar mass of 74.55 grams per mole. How many grams of potassium chloride are in the potassium supplement? So pause this video and see if you can […]

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