In this lab we tested to see if the amount of sunlight exposed to the basil seed, would affect the growth. The null hypothesis for this experiment was that there would be no statistical difference between the green, yellow, and red basil seeds’ growth. Three alternate hypotheses are: If we expose the green seed to 48 hours of sunlight and the yellow seed to 24 hours of sunlight, then the green seed with grow more than the yellow. The opposite of this hypothesis would alternate 2. Another alternate hypothesis is (3): if we expose the yellow basil seed to 24 hours of sunlight, and the red for 0.5 hours a day, then the yellow basil seed will grow more than the red. The opposite of this one would be alternate 4. For this experiment, we rejected the null hypothesis; because the p-value for each t-test was lower than 0.05. Green vs. yellow=4.12218E-05, green vs. red= 2.40477E-05, yellow vs. red= 0.001873048. All of these p-values lead to the null hypothesis being rejected. Meaning that there was a statistical difference between the sets of data. Alternate hypotheses 1 was supported because the mean of green was 7.000 and the yellow was 1.375, proving that green have more growth, also the standard deviation of green was higher than the standard deviation of yellow. Also alternate hypothesis 4 was supported because the standard deviation of red was 2.149499, and yellow was 1.40621, this proves that the red basil seed had more growth compared to the yellow. There were many errors that our group made while conducting this experiment. Some of the errors were that we had to have one person measure the basil seed because if different people did it, then it would not be a constant. Also it would skew the data and make it inaccurate. Also when in class we were combining our class data, one of our group members was not present, and she had most of our data. Because of our irresponsibility of not sharing our data to make sure everyone had it, we skewed the green
Conclusion 1: In this first lab we attempted to discover which of the materials given to us were hydrates by heating them and then dissolving them in water. Our results showed that all of our substances were hydrates besides the sucrose, sucrose if the only one which did not both bring condensation when heated and dissolve in water, which agreed with our hypothesis because we also thought that sucrose was going to be the only one that wasn’t a hydrate. The only error that we may have encountered….
When comparing the average speed results from part two of the lab and the definition of acceleration, you find similarities between the two. First, average speed is distance divided by time, and we use it to describe the motion of an object moving at changing speeds. We can see this from our lab results from the average speed of the marble traveling down the ramp, because it picks up speed. When the marble is released at the top of the ramp, the ball doesn’t have the same momentum….
In this experiment, we measured the mass of 4 gasses; oxygen, carbon dioxide, helium, and lab gas. We took a Ziplock bag, and turned into a non-stretchy balloon, and filled with each gas and measured the apparent mass then calculated the actual mass, then find a ratio between the mass of oxygen and the other gasses. We tried to keep the pressure about the same each time so our calculations would be more accurate.
We found out that the heaviest was carbon dioxide, and the lightest….
Conclusion to Motion Lab Kerreon Wright
The purpose of this Motion Lab was to find the acceleration of a steel marble going down a straight track six different times to figure out how an object’s mass affects acceleration. It doesn’t due to Newton’s second law of motion. There were six different accelerations for each trial and they are: 7.88 m/s squared, 6.78 m/s squared, 6.07 m/s squared, 5.57 m/s squared, 4.32 m/s squared, and 5.11 m/s squared. It’s possible….
Lab Conclusion on Density
In the lab of measuring density, precision and accuracy are very key components. Precision is the exactness of a measurement or good technique. Now accuracy is the value that we measured compared to the true value that the book has. Precision and accuracy are important because you need to have good technique and have your value close to the true value to minimize the error analysis. If you do these steps correctly you are a good chemist but if you do them poorly they….
In conclusion to the distillation lab, I think our data shows that our experiment went well. Our graph resembles the graph in the lab handout (graphs attached to lab notebook sheets). The fractional distillation shows the sharp slope between when the cyclohexane burns off and mostly only toluene remains. The microscale graph seems to be accurate because it shows the large jump where the cyclohexane is burned off. To view the apparatuses used in the experiment look at the attached pictures. To….
Alum Lab Conclusion
The purpose of this laboratory was to use two different techniques to attempt to identify the melting point and the mole ratio of hydrated water to anhydrous aluminum, potassium, and sulfate of AlKSO4. The hypotheses were: if the alum was put in a capillary tube the melting point of alum will be able to be determined; and the water of hydration in alum crystals will be possible to determine if the alum is heated with a Bunsen burner.
Part 1: Data Table
The purpose of this experiment was to discover the chemical properties that copper has when reacting with other chemicals and how it changes physically during these processes. (Department of Chemistry, 2013) This was achieved through many types of reactions, such as a redox reaction, double displacement, decomposition reaction and single displacement depending on the chemical properties in relation to copper of the other substances when it was added with copper. Copper was either in an….
In conclusion, after conducting the lab, the emergent properties of water were tested and proved. These trials and experiments were able to verify the adhesion, cohesion, polarity, temperature stabilization, solvency, and density changes exhibited by water.
During the glass and wax paper lab, we observed the adhesive properties of water. When a droplet of water touched the glass, it dispersed immediately. The droplet placed on the wax paper remained intact and in droplet form. Also, when the….
I predicted that if the decolorization of DPIP is caused by photosynthesis and not cell respiration and spinach extract containing chloroplasts and mitochondria is incubated with DPIP, then the rate of DPIP decolorization should be higher if in bright light verses dark light because DPIP is reduced by photosynthesis and not by the mitochondria or any other cellular function. If DPIP was only decolorized by chloroplasts, then the percent transmittance of chloroplast suspensions would be….