The Importance Of Energy Experiments

The percent yield for trial one is 83.4% and for trial two is 84.9%. These results show the experiment was successes. One major factor that will affect the mass of silver that produces is the crucible was not heated enough at the beginning of the lab. There will be debris left in the crucible and some water molecules store in the crucible caused by a humid environment. This will increase the mass of oxygen production. Or during the measurement of the silver oxide, there will be ±0.001 grams of error. All those potential mistakes could affect the accuracy of the results. These uncertainties could increase by heating the crucible for a longer period. Clean the crucible and its lid before the lab, to make sure there are not any dust left in it. At the same time increase the time for heating the empty crucible and its lid. Also, the balance that with 0.0001 precision could be used for the future lab. However, the percent yield for these two trial are precise and the lab was

The purpose of this particular lab was to experiment and identify the chemical and physical changes throughout the experiment.

The data gathered and calculated in the experiment accurately portrayed the way the reactions would have taken place. The chloride analysis was a little bit off from other groups due to the fact that our AgCl was in clumps, creating less surface area, thus our product took longer to burn and may not have burned correctly compared to other groups; yet there are several experimental factors that could have caused us to have different results than other groups, i.e. different measurements for samples. Our sources of error could have included eye measurement error, timing of set solutions error, measurement errors, and small calculation errors. Among other variables, the calibration of the analytical balance and spectrophotometer could have

We repeated this for a total of 6 known substances and 3 unknown substances. We also made a table for each element showing the color of the flame that we saw,

What is the goal of this lab? What question is it trying to answer, or what problem is it trying to explain?

The experimental procedures for Lab 2 were provided on Blackboard labelled as “Pre-Lab 2: Techniques & Measurement”.

These different mistakes during the lab caused the results to change during the

In the future, this experiment could improved or expanded. One area of improvement could be to do this experiment several times and then averaged together or compare the results. This leaves less room for error and could make the data more accurate and precise.

Although the tin did not show any signs of reaction some of the results show there was still a 0.01 grams loss in mass. More accurate scales and more experiments conducted to give a better understanding to see if there was any actual loss in the tin. The iron on the other did show signs of reactions and had a 0.01 grams mass loss. To get more accurate results of how much mass was actually lost there would need to be more accurate scales. Signs of reaction also occurred with the zinc. There was an average of 0.033 grams mass loss. If more accurate scales are unavailable an alternative to the experiment would be to increase the concentration of acid or increase the time period of the reaction (say three days).

What was the main motive for this research? (e.g., gap in previous research, contradictory results)

When and how could it lead us to the wrong conclusions? Why is it an unreliable or

Some possible errors would include inconsistent temperatures that varied by about five degrees, because of opening the hot bath a lot of heat was lost, as well as, waiting till the end of lab to run the cold trials so the ice was melted caused a increase of temperature. Human error was another aspect that affected the data. Since the disk assay was based on observation of when the disk floated that data probably was not accurate to the exact second to when the disk reached the top of the solution. Another possible error is that the hydrogen peroxide was left out during the experiment for example the cold solution was left out the majority of the period. Since hydrogen peroxide decomposes more in light, this could have played a small role of increasing the reaction

1. The samples were very clear in what they were portraying and was very easy to understand. I tried my best to follow the references and to make the experiment running as smooth as it seemed to be in the reference material.

What is energy? Energy is the capacity to do work. Energy could either be created nor destroyed. Energy is the main source to survive, for instance, without energy from the sun all species from earth are unable to survive. All humans and living things are connected to energy. To create plants, it takes energy to grow. To create a human being, it takes energy to develop and born. Anything that you wish to do takes energy. Everything around the universe is energy. There is Quote by an unknown author that says your energy introduces you before you even speak. The energy that you put, and shows to the world is the energy that is going to show what you can do and show to the world. People dependent on energy. The energy that you give, says a lot about you. Waking up every day to do multitasking is hard, and it takes a lot of energy from you. Many people prefer to increase their energy levels by consuming caffeine, however, they don’t know that caffeine can eventually cause them fatigue and health problems. Using natural methods to restore people’s energy levels is the best solution to increase energy.

It has been predicted that by 2050, reduction strategies within the passenger transport sector could result in GHG emissions being cut by up to 38%, while reduction strategies in the freight transport sector could see GHG emissions reduced by up to 13% (Chunark et al. 2015).