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Unformatted text preview: been used to tare the scale) and the mass of the liquid can be determined. Then the formula of Density = (Mass)(Volume) can be used to determine the density of the liquid. 5. density = mass/volume mass = (density)(volume) volume = (.0012 c m) 3 = 1.73 x 10-9 c m 3 density = 0.96g/cc mass = (1.73 x 10-9 m)(0.96g/cc) = 1.66 x 10-9 g 6. When preparing the working solutions, it was a smaller amount so a pipet was used because it needed to be more exact. However when preparing the stock solution, it was a larger quantity so a graduated cylinder could be used because there was more to transfer and it did not need to be as exact as the working solutions. 7. 0.35M = mass (58.4g)(2.0L) mass = 40.88g 8. 0.015M x 40mL = 2 mL 0.3M 9. a) 25.7g = 0.45M (342.3g)(.168L) b) .5M - .45M x 100 = 11.11% error .45M...
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- Fall '07
- molecular biology