6.03 Calorimetry Lab Report Results

Having Trial #1 and #2 being only 1 decimal place different from each other was very surprising to me, and indicated high precision. This led to a low standard deviation and a low %RSD. I think consistency of observations was what led to a high precision for me. When I added reagents to the Al(NO3)3, all the trials typically had the same observations. I stopped adding things like HCl and ammonium acetate immediately after I saw a stable

How did mankind come into existence? Mankind is made after the image of God. John 1:13, says, “All things were made through him” (KJV). Man has always existed with God, but it was not until God said, “Let us make man-kind after our likeness, and after our image” (KJV) that the likeness of God was shaped into a form. Colossian 1:16-, says, “For by him all things created” (KJV).

The theoretical yield for Zinc Sulfide is 0.49 grams but the actual yield is 0.38 grams. So if 0.38 is divided by 0.49 and multiplied by 100 then the percent yield for Zinc Sulfide would be 77.6%. When it comes to Sodium Chloride, the theoretical yield is 0.58 grams and the actual yield is 0.45 grams. So when 0.45 grams is divided by 0.58 grams and multiplied by 100, the percent yield would be 77.5% of Sodium chloride. The actual yield is directly taken from the mass of the products in the experiment while the theoretical yield is determined by using stoichiometric calculations.

Calibration keeps measurements valid throughout your testing. 2. During an assessment, it is possible to have many random and systemic errors and their source depends on the type of experiment and measuring instruments being used. For example, with a random error, you measure the weight of an individual three times in a week, using the same electronic scale and get slightly different values for each measurement. For example, with a systemic error, the electronic scale you use reads slightly too high for all the measurements, partially because it was improperly weighed throughout the experiment.

These small errors may be arised as a result of temperature. Because the accurate mesuring process took much time and during this time the temperature of water was decreasing. Among two methods the density bottle gives more accurate measurement of the volume, resulting in more accurate determination of density. One of disadvantages of hydrometer is that hydrometer has Operator dependent readings, therefore has limited accuracy. Morever, for measuring the density using hydrometer large sample volume is required.

By the grace of God. If we are able to take things and apply what we know with the other information that we are able to ascertain, then we will begin to understand that Clark’s argument is necessary and true. Clark’s Cosmological Argument is often called the first cause argument seeks to prove the existence of God from the fact that the universe exists. The universe came into existence at a point in the distant past. Nothing can come into existence, though, unless there is something to bring it into existence; nothing comes from nothing.

My personal worldview, in its entirely, stems from a belief in a divine God who created the universe and everything in it to His exact specifications. This belief directly answers Sire’s first and second worldview questions, “What is prime reality—the really real?” and “What is the nature of external reality, that is, the world around us?” (Sire, 22). The Christian Bible’s first chapter, Genesis 1, details my view of God’s creative process, with its first line effectively summing up my stance, saying “In the beginning God created the heavens and the earth” (Gen. 1.1). Anyone, including myself, who holds a theistic Christian worldview believes the Bible to be more than just a book; God himself inspired the authors of its pages. Like a belief in God himself, a certain level of faith must exist for a Christian to believe in the text’s holy nature.

It can been seen that there are two distinct bonds, between two oxalates (94.06°, 93.56°, 90.61°, 94.30°) and within a singular oxalate (81.30°, 82.63°). The reason these bond angles vary within this octahedral complex are a result of lone pair repulsion creating slight variations among the bonds. Color Determination: To explain the coloring of Potassium Tris(Oxalato)Ferrate(III) Trihydrate, we must take into account λmax. Potassium Tris(Oxalato)Ferrate(III) Trihydrate had a λmax of approximately 395 nm, and formed yellow green crystals. When we look at a color wheel it can be seen that a substance with a λmax of approximately 395 nm would absorb violet light.

In the research conducted by Cox et al., (2012), there were limitations in their sample. Their sample size was too small which makes it difficult to generalize the data and a claim a specific relationship. Further research should incorporate a larger sample size to be considered representative of people to whom results will be generalized and also to ensure a representative distribution of the population. Ineffective screening for comorbid disorders was another limitation in Cox et al., (2012) research. During the recruitment process, participants were only screened for MDD but not for any other comorbid disorders, which makes

This was approached by finding the molar mass of sodium thiosulfate pentahydrate and then using that value to convert the grams of the sodium thiosulfate used for the initial creation of the weigh bure into moles. The molar mass of sodium thiosulfate pentahydrate was found by adding the atomic masses of each element found in the compound, as shown in Example 1. The molar mass was then used to convert the grams used into moles by using dimensional analysis. Example 1: Na2S2O35H2O (22.990Nag x 2)+(32.066Sg x 2)+(15.999Og x 3)+(1.008Hg x 10)+(15.999Og x 5)= 248.18 g/mol Example 2: 0.21gx1 mol248.18 g= 8.46 x 10-4 mol The last step in completing the Preparation Table was to calculate the concentration of the standard thiosulfate solution by dividing the moles of sodium thiosulfate pentahydrate by the mass of the solution, in grams(Example 3). Example 3: 8.46 x 10-4 moles of Na2S2O35H2O/ 9.70 grams of solution = 8.72 x 10-5