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Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.
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What is the concentration, in grams per liter, of a solution prepared by dissolving 0.00040 mol hcl in 2.2 l h2o? assume that the volume of the solution does not change when the hcl is added.
Answers: 1
The unit used to measure barometric or air pressure...
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