1. Heat water in a pan or beaker until it is boiling vigorously. 2. While you are waiting for the water to boil, measure the mass of the metal with your scale. Remember to report your answer to one more decimal place than what is marked off by the scale.…
A heated plate, placed distilled water (60 mL, some of the water will be evaporated) to a 100 mL beaker. Brought the water to a boil and then carefully stick a thermometer in the boiling water. Subsequently, the temperature was noted. If the thermometer was not showing 100 ℃, the difference was added or subtracted from…
Then the mass of a weighing dish was recorded along with 0.35 g of KHP. The mass of an Erlenmeyer flask was then weighed as well. After both flask and substance were weighed, the combined mass of the flask and substance was recorded…
The purpose of Mendeleev’s lab is to observe the physical characteristics and properties of common elements. In addition, observe arrangements and trends on the periodic table. Finally, the main goal is to draw conclusions and identify the locations of unknown elements based on given trends and properties. Through observing characteristics and trends, one is introduced to reading the periodic table and its elements, based on how it is arranged. Dmitri Mendeleev was a Russian scientist who is credited with creating the first periodic table.…
After each compound was added to the 50mL of water we used a magnetic stirrer and a stir plate to dissolve the compound and then a thermometer to measure both the initial and final temperatures of the compounds. Before we began our experiment it was necessary to look into the MSDS…
In this lab procedure, lab groups were split by the type of lab procedure they would perform. Half the lab groups were tasked to perform simple distillation while the other half performed a fractional distillation. Before beginning the procedure for the fractional procedure, materials were gathered. The lab procedure with the lab manual called for a short neck round bottom flask; however, this was not followed during the actual lab. Instead, the long round bottom flask was used.…
Heat water in a pan or beaker until it is boiling vigorously. While the water is boiling, measure the mass of your metal object, marking off your answer to one more decimal place than what the scale marks off. Once the water is boiling, drop the metal into the water, leaving it in for about five minutes to allow it to reach the temperature of the water (100.0 °C) Place one Styrofoam cup into the other. This will be your calorimeter.…
Afterwards, the flask was filled with distilled water to the mark, so that the bottom of the meniscus is aligned with the ring in the neck of the flask. The filled flask was then weighted and the measure was recorded. Then, the distilled water was poured from the flask into a 50 ml beaker and its temperature was recorded. Once that was done, the flask was cleaned with an unknown solution provided by the instructor and then the flask was filled with the same unknown solution up to the mark. The flask was weighted and its mass recorded.…
Quantification of Iron in Whole Grain Cereal Jacob Rickman and Yasmeen Coan Submitted to: Curt Zanelotti CHEM 1045, Experiment No. 12, April 15, 2016 LABORATORY WRITTEN REPORT Honor Code Signature: _________________ Objective In this experiment, we gained an understanding of the relationship between chemistry and food products while developing and enhancing good lab techniques. We applied dilution concepts to carry out the experiment.…
INTRODUCTION The trends in physical properties of organic compounds such as boiling points and melting points can be deducted from their structures, including size (molecular weight, surface area), shape and functional groups. These factors significantly influence the strength of the intermolecular forces of attraction present; and the nature and strength of intermolecular forces determine the variations in boilingpoints of organic compounds. The boiling point of a liquid is the temperature at which its vapor pressure equals the external or atmospheric pressure. At this temperature, every molecules of the liquid acquire enough kinetic energy to overcome the intermolecular forces attracting them to the other molecules.…
With these changes applied, if the experiment were to be tested again, it would be possible to determine whether copper or water calorimeters heat up quicker. These results give a good idea of the trends in properties of alcohols and they can be used to determine which are suitable for which purposes in industries today. The most efficient alcohols may be used as long as they’re not classified as unsafe, hazardous, or unsuitable for the task. With investigations like these,…
In this lab, five different ratios of two chemical solids, Urea and trans¬-cinnamic acid, were heated up in a Mel Temp apparatus until the final melting point was achieved. Each substance started as a solid in a capillary tube and when they reached the…
This experiment examined the boiling process and the effect of added ingredients. Purpose of this experiment is to understand boiling process as well as the factors that affect this property. The objective of this experiment is to investigate the appearance and temperature of range of water that is lukewarm, scalding, simmering and boiling point. On top of that, we also need to determine the factors that boiling temperature of water alone and with various ingredients added.…
The initial temperature was immediately taken at 0 minutes 9. The timer was started and the temperature was recorded every minute for 10 minutes 10. Written observations were recorded for the appearance of the iron wool ball after the experiment 11. Step: 3 to 10 were then repeated for the liquid substances Oil and Soft drink 12. All materials were disposed appropriately cleared and placed away of the consoles of the experiment Results Table 1.…
If too much of the sample liquid entered the capillary tube, some was removed by lightly tapping the tube on a paper towel. In each of the capillary tubes the sample liquid was moved to the middle of the tube by lightly tapping it; once the liquid was in the middle both ends of the tube were sealed by plugging both ends with some Vaseline. The capillary tubes were then arranged in sequence along the tube holder with a space between the 3 groups. The alcohol bath was then prepared by placing dry ice into it in order to lower the temperature to around -15°C. Gloves or paper towels were used to handle the dry ice.…