Original Mixture Lab
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
6.03 Pre Lab
993 Words | 4 PagesTo find the mass percent of acetic acid in vinegar, the molar mass of acetic acid is 60.05 g/mole, and 1.00 g/mol of density, then 0.96 mol×(60.05 g/1 mol) = 57.65 g 57.65 g/1000= 0.0576 ×100 = 5.76% The average mass % of acetic acid in vinegar = 5.53% The average % of acetic acid was 5.53%, which is close to the acidity of the vinegar that was taken in the lab which was 5%, for the different percent we had it could be because of errors in calculations or errors in collecting data. 3.
6.03 Calorimetry Lab
775 Words | 4 PagesIn the first part of the experiment, Part A, the standard solutions were prepared. As a whole, the experiment was conducted by four people, however, for Part A, the group was split in two to prepare the two different solutions. Calibrations curves were created for the standard solutions of both Red 40 and Blue 1. Each solution was treated with a serial 2-fold dilution to gain different concentrations of each solution.
Alka Seltzer Lab
198 Words | 1 PagesObjectives In this lab, you will investigate the percent composition by mass of CO2 in Alka-Seltzer® tablets. In addition, you will find out how much CO2 is released into the atmosphere as 2 Alka-Seltzer® tablets chemically react in vinegar. Procedure 250-mL beaker 100-mL graduated cylinder Scale 60 mL of Vinegar 2 Alka-Seltzer® tablets
Compare And Contrast The Separation Of Copper Chloride And Sodium Chloride Mixture
1371 Words | 6 PagesAbstract In this experiment the separation of a copper (II) chloride and sodium chloride mixiture was attempted. The main aim was to separate the compounds from eachother while receiving as much of the original mass of both substances as possible - in perfect conditions the original mass will be received after seperation. Many techniques were considered but dissolution, filtration and evaporation proved to be easiest and most reliable in a school environment with school equipment. The copper (II) chloride and sodium chloride mixture was dissolved in a methanol solution and filtered out leaving the sodium chloride behind.
Molar Relationships Lab Report
425 Words | 2 PagesTo calculate the experimental mass the substance of each bag and the bag its self was measured using a balance. After gathering the mass subtract the mass of the empty bag to the mass of the unknown substance, in order to just have the mass of the substance. Afterward the mass of the unknown substance was divided by the number of moles recorded on the bag of the substance. The measurements are displayed on the table
Beta Vulgaris Lab Report
1572 Words | 7 Pages3mL of the liquid in each of the vials were added into cuvettes and measured in the spectrophotometer. Before each time point the photo spectrometer was zeroed using a cuvette with 3mL of distilled water. If any of the results were considered unusual the machine was zeroed again and the sample was retested. The results from the spectrophotometer test were recorded in a table. The experiment was repeated six times to gain a sample size of six.
Molar Mass Of Unknown # 43 Using The Derived Freezing Point Depression
1294 Words | 6 PagesUsing the equation m = ΔTf/Kf , the molality of the unknown solution was found. Then, moles of unknown were calculated, which was used to calculate the average molar mass of unknown. Theory: After the experiment was completed, the data
Mole Mass Lab Report
372 Words | 2 PagesI. Purpose: To experimentally determine the mass and the mole content of a measured sample. II. Materials: The materials used in this experiment a 50-mL beaker, 12 samples, a balance and paper towels. III.
Unknown White Compound Lab Report
1367 Words | 6 PagesWeighed 1 gram of NaC2H3O2 and mixed it with ionized water. Boiled 12 mL of 1.0M Acetic Acid added into a beaker containing the sodium carbonate on a hot plate until all the liquid is evaporated
Lab Report: Diffusion And Osmosis
1274 Words | 6 PagesEach group was assigned a different percent of sucrose solution out of the four variables; 0% , 5%, 10%, and 15%. After we filled the beaker we then got two potato cores. Once we had the cores we cut the skin off the ends. Following this we then cut the two potato cores into four 2.00 cm potato cores. After they were cut into 2.00 cm each we found the mass.
Gas Chromatography Abstract
3251 Words | 14 PagesEssential Principles of GC By utilizing GC, we can separate a mixture into individual parts. In this division handle every segment exhibit in the specimen can be distinguished (qualitatively) and measured (quantatively). Mixes which are going too dissected by GC ought to be unpredictable, or can be made unstable and ought to be thermally steady. The essential working guideline of GC includes dissipation of the specimen in a warmed delta port known as injector and after that division of the parts of the mixture in a section lastly recognition of every segment by utilizing a finder.
Empirical Formula Of Copper Chloride Lab Report
729 Words | 3 PagesUsing the Law of Definite Proportions, the mass of this product was used to determine the number of moles of copper and chlorine in the sample, which led to being able to determine the
Separation Of Benzoic Acid Lab Report
651 Words | 3 PagesThe percent recovery found for benzocaine was 1%, while the percent recovery of benzoic acid was 35%. This was done by taking the final mass of the benzocaine, .02g, and dividing it by the mass of the beginning mixture, 2.0g, then multiplying by 100. The percent recovery for benzoic acid was found the same way, but the final mass for benzoic acid was 0.70g. These low percentages are a result of errors during the experiment. One source of error was during the first separation of layers.
Acid Base Neutralization Lab Report
1001 Words | 5 PagesIV. Data and observations Mass of beaker (g) 174.01 Mass of beaker + NaOH pellets (g) 174.54 Mass of NaOH pellets 0.53 TRIAL 1 TRIAL 2 Mass of potassium acid phtalate (KHP) (g) 0.15 0.15 final buret reading (ml) 30.75
Distillation Lab Report
1300 Words | 6 PagesAbstract — This experiment was conducted to familiarize the students with the procedures regarding distillation—to be more precise, the separation of ethanol from an alcoholic beverage—using a distillation set-up consisting of boiling chips, a Bunsen burner, a condenser, a thermometer and several other materials. In the end, it was discovered that one may actually separate a homogeneous mixture, given that the components of said mixture differ in volatility and that they utilize a complete distillation set-up and follow laboratory safety rules and regulations. Keywords — Matter, homogeneous and hetereogeneous mixtures, distillation, volatility, boiling point I. INTRODUCTION There are typically two categories of matter, these are pure substances
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