Erlenmeyer flask

Even though volume is increasing, the moles and volume of HCl(aq) in the erlenmeyer flask is still constant. The objective is to find the concentration of the unknown acid, and since the moles and volume do not change, therefore the results of the concentration will not either. Vinegar is an acidic solution; by rinsing with vinegar…

environment like apple juice, then the yeast will produce more CO2 and cause the balloon to inflate faster. The control was the room temperature Throughout the experiment the type of balloons, size of the erlenmeyer flasks, amount of yeast, volume of each liquid, and the amount of time each flask was allowed to sit were constants. Our independent variable was the liquid the yeast was placed in while the dependent variable what how fast the balloon would fill up.The control was the room…

This paper describes the process by which a three-component mixture was separated and identified. The mixture was separated with the aid of a separatory funnel and various solvents acids and bases. The compound was found to be comprised of meta-nitroaniline, naphthalene, and benzoic acid / 2-napthol. All three of them are organic compounds with melting points in the order they were listed 111-114, 79-82 and 121-122/121-123 °C. the percent yield of each component was also calculated at the end…

caffeine was isolated we used thin layer chromatography (TLC) to compare the extracted material to a standard solution of pure caffeine. We dissolved the sublimed caffeine in 3 mL of methylene chloride in a clean vial and then swirl the residue in the flask with 3 mL of methylene chloride. A pure caffeine solution sample was obtained. On a chromatographic plate, two lines were drawn 0.5 cm away from the short ends. Then place one drop of the caffeine solution on the line and next to it one…

A different Erlenmeyer flask has been used for the mass. As a result, the mass of the isolated caffeine is inaccurate. Though the product of this experiment was not successful, the extraction technique was better understood to carry out a second experiment - isolating a…

Unlike solids and liquids, gases are known to have both variable volume and pressure. The gas laws were formulated in the late 18th century by various scientists to develop a relationship between the volume, pressure, temperature, and the number of moles of a gas.1 This has allowed scientists today to manipulate these variables in controlled lab settings, to utilize these laws in new innovations such as ventilation systems, and to explain observed biological phenomenon like breathing. Boyle’s…

the sand bath was set to 20℃. The 1.00 gram of ground nutmeg was transferred to the round-bottom flask (RBF) using the plastic funnel. Three milliliter of tert-butyl methyl ether and two or three boiling chips were added into the flask. The black plastic connector was used just like the distillation column with air condenser set-up. The flask was clamped to the ring stand using 3-pronged clamp. The flask was lowered into a slightly depression in the sand without touching directly to the sand.…

In this lab, we tested different experiments on a candle flame in order to better understand properties, combustion, and states of matter. We recorded many observations that could help us reach a conclusion using what we saw happen. When we observed the regular candle flame, we concluded that the heat of the flame vaporizes the liquid wax. Then, we blew this candle out and took a different lit candle into the smoke trail from the burnt out candle. The wax vapor in the smoke is combustible,…

apparatus included 250mL distillation flask, a 100ml receiving flask, a condenser for water to run through, and a thermometer to monitor the temperature. The measurements of the empty flasks were 37.5120g for the distillation flask and 31.1978g for the receiving flask. The mass of the unknown liquid mixture was determined by transferring the mixture into the distillation flask and subtracting the initial…

The KHP was dissolved with distilled water in an Erlenmeyer flask and two to three drops of the indicator were added. A bottle was filled with the NaOH solution to be used during all titrations in order to standardize and therefore find the concentration of the solution. A clean buret was then filled with a portion of the NaOH solution, allowed to settle from air bubbles, and then dispensed into the flask to titrate the…