2. In setting up this experiment, a student noticed that a bubble of air leaked into the gas tube when it was inverted in the water bath. What effect would this have on the measured volume of hydrogen gas? Would the calculate value be too high or too low as a result of this error? Explain…
In this experiment, the experimenters found the density of solid objects and then the concentrations of solutions based on their densities. It was determined that as density increases, concentration does as well. The density of a substance is something that stays constant, for solutions of material the density is expected to increase in direct translation to the concentration increasing. The theory surrounding this lab was to see in practice how density could be determined with displacement and then to determine whether the density does in fact increase directly with the concentration.…
A graduated cylinder was used for measuring the volumes of the liquid. When measuring the volumes be sure to be eye level with the meniscus. Any other position when looksing at the container will cause an error in the experiment.…
This lab experiment displays the accuracy of scientific measuring equipment. This experiment also helps to familiarize the students with these instruments.…
1. Describe the relationship that you observed between pressure and volume in this lab. Refer to your data and/or graph to help support your answer. …
beaker. Three trials were done and measurements were recorded. The purpose of the second experiment…
Discussion: This lab could have been improved by performing the lab simulation multiple times and the data averaged out to reduce the percentage error. The results of this lab correspond to the rules of Boyle’s law, the volume of the container decreased as the pressure increased while the temperature remained the same.…
ABSTRACT: The objective of the experiment was to be introduced to working with the lab equipment, specifically heating and measuring, and to be able to create some of the apparatus that future experiments will require. Heating methods used were an aluminum block, a sand bath, and a water bath. The aluminum block heated most quickly while the others were more stable. Regarding the measurement of water, the less volume of water that was being transferred, the less accurate the measurement turned out to be.…
1) Describe the relationship that you observed between pressure and volume in this lab. Refer to your data and/or graph to help support your answer. [5 points]…
As the two tubes are connected by the manometer these pressure changes are cancelled out. Pressure changes affecting one tube but not the other will cause the manometer fluid to show a difference in height on the two sides of the U-tube. The apparatus is assembled with both three-way taps open to the air, to prevent the manometer fluid being pushed into the tubes. However, during an experiment both three-way taps are closed to prevent air movement between the air in the apparatus and air in the laboratory, as shown in Figure 2.18. The difference between the levels of manometer fluid on the two sides of the U-tube represents the pressure difference between the air in the two tubes.…
The purpose of this experiment is to conduct different experiments that will illustrate the different gas laws. We will be given a list of equipment need to perform the experiment as well as general rules to help us do the experiment. We will investigate three properties of gases pressure, temperature, and volume. By doing this experiment we will be able to define the gas laws. According to Boyles, it states that a fixed amount of ideal gas that is kept at a fixed temperature, that the pressure and volume are inversely proportional, if the temperature stays unchanged. According to Charless Law, if the pressure of a gas is held constant, as the gas is heated, its volume will increase and that cooling the gas will cause the volume to decrease. Charles law describes that of the Gay- Lussacs law, who had actually referenced unpublished work of Charles. The law states that at a constant pressure, the volume of the given mass of the ideal gas will increase/ decrease, the same ways as the temperature will increase/ decrease. An easier way to interpret this is that at a constant pressure, volume and temperature are directly proportional. Materials Lab quest Vernier gas pressure sensor Temperature probe 20 mL gas syringe 125 mL Erlenmeyer flask 3 600mL beakers hot plate Dry ice rubber stopper with 2-way valve Procedure and observations (Part 1) The first thing we did in this experiment was measure pressure and volume. To do this we used the lab quest and syringe. You attach the syringe to the valve of the gas pressure sensor. We pick a volume and when reading the volume on the syringe make sure you read from the inside black ring on the piston of the syringe. Make sure to connect the gas pressure sensor to the Lab Quest and choose new from the file menu. Then you will set up the data collection, first change the collection mode to events with entry, then enter volume and units (mL) and select ok. When collecting the data allow for the pressure to fluctuate and when it is…
The purpose of this lab was to designed and complete a laboratory experiment that proves the law of conservation of mass.…
Before starting the experiment, self educating on background information was a necessity in order to obtain a full understanding of what exactly was going to be performed. What is blood pressure and how does it work? “As the heart beats, the heart pushes blood through a network of blood vessels called arteries. As the blood travels through the arteries, it pushes against the sides of these blood vessels and the strength of this pushing is called blood pressure.” (Blood Pressure UK) After getting the basic definition of what blood pressure is, it was learned that when blood pressure is taken the first number that is said is the systolic blood pressure level or the highest level that is reached when the heart is squeezing. The second number that is read is the diastolic pressure level or the lowest level when the heart is relaxing, which is measured in mm Hg. (Blood Pressure UK) Moving on to pulse rate, also known as heart rate. It is known that pulse rate is the number of times the heart beats in one minute. (Gordon) Pulse is lower at rest and increases when higher activity is performed, like exercise. (Gordon) Pulse is taken by putting the tips of the index finger and middle finger onto the palm side of the opposite wrist below the base of the thumb. (Gordon) By pressing…
Although Boyle's chief scientific interest was chemistry, his first published scientific work, New Experiments Physico-Mechanicall, Touching the Spring of the Air and its Effects (1660), concerned the physical nature of air, as displayed in a brilliant series of experiments in which he used an air pump to create a vacuum. The second edition of this work, published in 1662, delineated the quantitative relationship that Boyle derived from experimental values,…
On December 30, 1691, the influential and scholarly Robert Boyle left science with a strong legacy of discoveries and experiments. The Irish physicist, chemist, and natural philosopher brought significant discoveries to chemistry, the theory of matter, and pneumatics. With much of his time being devoted to writing and studying, Boyle became interested in natural philosophy, religious topics, and ethical issues; even though some of these topics did not have much of an overlap with science, Boyle found a way to learn more about medicine, physics, chemistry, and natural history. In Boyle’s early life, he was influenced to live a successful life for himself.…