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ChemTeam - Balancing Chemical Equations VII
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Radioactivity: Half-Life II

In this problem, counts per hour gives us information about how much of the carbon-14 has decayed. Normally, this information is given in grams or milligrams. However, counts per hour can be used in exactly the same manner as mass. The key is to determine what decimal fraction of material remains on hand.

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ChemTeam - Convert meters per second to kilometers per day
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Two conversions (one of time and one of distance) are required to solve this problem.
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ChemTeam - Acid Base: A Trick pH Question
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This question is a favorite trick question among teachers. Watch out for it.
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ChemTeam - Acid Base: Calculate the pH of a Weak Acid I
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You are given the Ka and the concentration of the acid. Calculate the pH.
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ChemTeam

203 episodes in Learning

The ChemTeam provides study resources in all standard topics for students in high school and Advanced Placement chemistry.