Original Mixture Lab

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In this experiment we took an original mixture and split into three components. By decanting and dissolving materials we were able to find the percentages of each material in the original mixture. From the results we found Sand and NaCl to be the majority of the mixture, however in reference to the Law of Conservation of Mass, we found a slight discrepancy in the final results. Introduction The purpose of this experiment was to determine the amount of each compound is found in the original mixture. Starting with a mixture of substances the components of the mixture should be able to separate. During this separation all of the components together should have the same mass as that of the starting mass of the mixture. According to the Law of…show more content…
Even if chemical reactions occur the total mass should stay the same. When doing this experiment there will be times when the mass of a sample cannot be found directly and the formula below will need to be used to find the sample’s mass. Formula 1 : Mass of sample= mass of evaporating dish with sample – mass of evaporating dish For completing this experiment the use of percentages will be used in order to determine the percent of each component in the total mixture. Below is the formula used in order to determine the percentages of each component of a mixture. Formula 2: % Component= 100% component mass (g) sample mass (g) Procedure First, we measured out the evaporating dish to find the mass. Then we added around 3 grams of our sample (2.832g exactly). Next we added the isopropyl alcohol to dissolve the Benzoic Acid. We filled the evaporating dish, stirred, and then decanted the sample into a 140mL beaker with a stirring rod. This…show more content…
This information is found in (Table 1). After that we dissolved the Benzoic Acid we received three masses once the substance was dried (Table 2). During the drying there were some problems with the substance sticking to the stirring stick possibly causing loss of material. With the lowest mass of the Benzoic Acid (25.805g) was taken and subtracted from the evaporating dish mass to find the mass of the sample (Table 5) (Formula 1). After the Sodium Chloride was dissolved into

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