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Jun 17, 2013

1) what is relative error in Chemistry, 2) what is necessary for water to attain to room temperature before used in experiment?

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    Jun 17, 2013

    1. Relative error is a measure of the uncertainty in a measurement compared to the size of the measurement also Known as, relative uncertainty. For example, if three replicate weights for an object are 2.00 g, 2.05 g, and 1.95 g, the absolute error can be expressed as ± 0.05 g and the relative error is ± 0.05 g / 2.00 g = 0.025 = 2.5%.

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    Jun 17, 2013

    .2. The expectation is that the glassware will be used to measure liquids at room temperature. Since liquids have a tendency to change volume (at the level of precision of calibrated instruments), then you want the liquid to be at the temperature you are most likely to use so that the calibration will have the most accuracy.

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