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The sample contains 100 grams of methane and the question asks for the total number of hydrogen atoms in the sample.
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ChemTeam - Acid Base: Using the Henderson-Hasselbalch Equation VIII
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This problem uses a bicarbonate/carbonate buffer, but does not provide a Ka (or pKa) for the acid which, by the way, is the...
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Gas Law: gas density and percent composition

The percent composition that is calculated is that of air (only nitrogen and oxygen are considered. PV = nRT is used as well as expressing the two percent compositions as 'x' and '1-x'

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ChemTeam - Solutions: Boiling Point Elevation I
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Like the title says.
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ChemTeam - Solutions: Boiling Point Elevation II
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Like the title says.
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ChemTeam - Solutions: Vapor Presure Lowering I
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A nonvolatile solute is involved. Also, a van 't Hoff factor greater than 1 is involved.
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A nonvolatile solute is involved. Also, a van 't Hoff factor greater than 1 is involved.
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Gas Law: gas density and percent composition

ChemTeam

203 episodes in Learning

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