![]() ![]() You must ensure that (for this and all future experiments) all results are reported with correct significant figures and units.Points are allotted for the accuracy and precision of your measurements and it therefore behooves you to be as careful as possible when completing this experiment.This experiment should be performed individually.For gases, grams per liter (g/L) is more commonly used. If the true value for a measurement is 5.00 x 10 2 g and the measured value is 498.8 g, then the percent error is However, in reality you can only be certain of the answer to a particular level. When we make measurements and perform calculations, you can display a lot of digits (or add zeros incessantly). Tro, Chemistry: Structures and Properties, 2nd Ed, Chapter E.2, E.3, and E.5 Introduction Significant Figures Compare the volumes of mixtures and the constituent pure liquids.Compare the accuracy associated with using different glassware for measuring volume.Determine the densities of liquid samples.Use various pieces of glassware to measure the volume of a liquid sample. ![]() Calculate the percent error for a particular measurement.Report results of measurements and calculated values with the correct number of significant figures.Familiarize yourself with the use of laboratory glassware and other measuring equipment.Measure different quantities and report the measurements using SI units.So it is possible that different amounts of water could have the same density.3 The Density of Water and Water:Organic Mixtures The bucket with less mass has less volume. Students may point out that the bucket with more water has more mass but a greater volume. Could both the small and large amounts of water your classmate lifted have the same density?.But students may realize that they should somehow find the mass and volume of the water. It is meant as a lead-in to the investigation. Students are not expected to be able to fully answer this question at this point. How do you think you can find the density of a liquid like water?.Because D=m/v, water must also have density. Students should realize that water has volume and mass. Do you think a liquid, like water can have a density? In Lessons 1 and 2, you found the density of solids, by measuring their mass and volume.The bucket containing more water has more mass. ![]()
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