How_is_Lab_Glassware_Used - How is Lab Glassware Used...

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How is Lab Glassware Used? Cynthia Cortez, Noe Green, Angel Morales, Eva Valenzuela Professor Towshif February 6, 2018 Lab Section: T-4 Group: 5 INTRODUCTION
In all materials used to conduct an experiment there is uncertainty, therefore when calculations or data are drawn from a lab there are no definite answers because they entail some slight error in measurement. In this lab accuracy and precision were two concepts that were discussed in regard to the measurements that were calculated. Accuracy in the lab represented the true value of the measurements that were taken and how close the data calculated was to these values. As for precision it represented how close two or more measurements were to each other, such as their consistency in a certain range, despite their accuracy. The importance of significant figures in this lab was that it provided less uncertainty in the values measured and reflected the appropriate measurement of these values as well. Another important aspect of significant figures is that they determine what is the smallest unit of measurement on a measuring device, which determines what next smallest digit is suppose to be estimated. Density is the quotient of mass divided by volume of a substance or material. The components of density, volume and mass, “are measures of the quantity of a substance”, which classifies them as extensive properties (Lower 1). However, when these quantities are divided, such as mass divided by volume, then they create an intensive property known as density (Lower 1). The formula of density is D=m/V, which is determined through the calculations of mass divided by volume for a given material or substance. The goal in this experiment is to determine the accuracy of a few common laboratory glassware through their percent error as well as significant figures. Another goal in the experiment is to determine which common laboratory glassware is most accurate.

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