Chemistry Galvanic Cell

In six different 50mL volumetric flasks there was 0.00 mL, 2.00 mL, 4.00 mL, 6.00 mL, 8.00 mL, and 10.00mL of the 5.00 g/L Cu^(2+)stock solution. 3mL of 15M ammonia was added into each flask, once the ammonia was added each flask was diluted with water to 50 mL then were all thoroughly mixed.

The dependent variable in the experiment was the temperature and energy absorbed by the water.

The content of this section depends to a large extend on the nature of the experiment. Topics here should include a section labelled:

Research Question: This investigation will determine the how the amount of water (independent variable) affects the amount the amount of time (dependent variable) it takes for the Alka-Seltzer to dissolve.

This experiment has, in fact, proven my hypothesis to be incorrect, after looking through the results, I now understand why. My hypothesis stated that

Difficulties in the experiment arose when inverting the buret and completely submerging it into the beaker of water. This is a likely place for error because

In paragraph two, it states "Pure water contains very few ions, so it does not conduct electricity well. When table salt is dissolved in water, the solution conducts very well, because the solutions contain ions.". In paragraph four, it explains how laundry ammonia can conduct electricity. It states "When ammonia dissolves in water, it reacts with the water and forms a few ions.". In conclusion, paragraph five explains more about how ammonia can cause electricity when it is put into a solution with vinegar.

Independent: The independent variable in the following experiment is the temperature as it is what is being changed and will impact the overall outcome of the experiment.

Chemical changes occurred in five out of the eight experiments completed in this lab. Although the main focus of experiment two was

The experiment is repeated twice and an average is obtained. This ensures the consistency of the measurement as the reading is triplicated, thus reducing anomalies. It can be seen that the reading obtained were around the same value. This proves that the results are reliable.

The independent variable of my experience meant is what I’m going to be changing which is the substance, coffee. The dependent variable of my experiment is the Daphnia’s heartbeat per minute, which will also increase immensely. The units I will be using to collect the data is one minute per trial.

The purpose of this experiment was to investigate the effect that different liquids would have on gummy bears. To do this we brought in different liquids, such as Fanta soda, salt water, water, and baking soda water. My hypothesis is, If you put gummy bears in different liquids then they might dissolve or enlarge. This experiment was tested on 9-14-17 and my group and I started gathering data, we started with 1 minute, 5 minutes, and then 24 hours. There wasn’t much change in the 1 and 5 minutes, the real change happened overnight. The next day of this experiment the gummy bears had mostly enlarged and softened, there was one that accomplished to do the exact opposite, the salt water gummy bear decreased and hardened. I believe that the salt

In animal cells, the movement of water into and out of the cell is influenced by the relative concentration of solute

In this experiment, the E° of three voltaic cells, and two concentration cells was calculated using a voltage probe. These E° readings were used to determine the identities of two metals, X and Y, which were used as anodes in two of the voltaic cells. The Nernst equation was then used to determine the Ecell of a copper concentration cell, and the concentration of Pb2+ in a lead concentration cell. Using the concentration of Pb2+ from the lead concentration cell, the Ksp of PbI2 was determined.

In electrochemistry, a voltaic cell is a specially prepared system in which an oxidation-reduction reaction occurs spontaneously. This spontaneous reaction produces an easily measured electrical potential which has a positive value. Voltaic cells have a variety of uses and you commonly refer to them as a “battery”. Half-cells are normally produced by placing a piece of metal into a solution containing a cation of the metal (e.g., Cu metal in a solution of a soluble salt that releases Cu2+ or Cu+ into solution). In this micro-version of a voltaic cell, the half cell will be a small piece of metal placed into three drops of a solution on a piece of filter paper. The solution contains a cation of