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A gas given off in a chemical reaction is collected over water in a gas measurement tube. At 22.50.5C and 7531mmHg,45.370.04mL of gas is collected.

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A gas given off in a chemical reaction is collected over water in a gas measurement tube. At 22.50.5C and 7531mmHg,45.370.04mL of gas is collected. R= 0.0820570.000001LatmK1mol1. How many moles of gas are released? What is the absolute uncertainty in that number

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