Alkaline Batteries

Substrate concentration basically means the amount used for the substrate. The substrate in our experiment was 0.1% hydrogen peroxide. The 0.1% is the concentration amount. Just like temperature and pH, substrate concentration can speed the reaction only up to a certain limit. When we mixed pH 3 enzyme tube with substrate tube, we used 0.3 mL of hydrogen peroxide, but if we were to increase the amount, then the experiment would have been faster.

The trial two palm wax candle would have taken the longest to burn until there was no mass left with 220 minutes at 0.04 g/min or 3 hours and 40 minutes. Therefore, the types of wax being used in candles do burn at different

TLC was used to identify the actual unknown product as well as other products/reactants present in the filtered solution. The procedure was conducted by placing a TLC plate in a developing chamber that is filled with a small amount of solvent. The solvent cannot be too polar because it will cause spotted compounds on the TLC plate to rise up too fast, while a very non-polar solvent will not allow the spots to move. The polarity of the spots also determines how far it moves on the plate; non-polar spots are higher than polar ones. After spots on the TLC form, the Rf values are calculated and used to analyze the similarity of the compounds.

The Z product was a liquid, while the E product was a solid. The final product weight for percent yield was only the solid E product, which missed one half of the final product produce. If both products were weight, the percent yield would have been larger that it was. Instead of 22.33%, it could have been 44.66%. To prove that both products were obtained, but only one of the two products was analyze, a TLC plate of the DCM layer, that contains both products, and of the final product, was obtain.

One error that could have affected the percent yield is not filtering out all of the liquid from the filter paper in the funnel before setting it off to dry. This would have increased the final mass of the solid, not making it accurate. To stop this from happening again, the liquid could be drained more thoroughly until it fully stops dripping into the Erlenmeyer flask. Another error that could have affected the percent yield is the amount of trials performed. This would have made the results less accurate and made any errors change the final results even more.

The percentage yield was a yield of 110% of the sodium acetate. A source of error that was made during this experiment was the transferring of the baking soda to the flask some of the dissolved baking soda might have still been in the beaker after it was pouring into the flask. A solution to this error would be to have better skills or to have tried to get out a much of it as we could by getting a tool to try and scrape some of it out. Another source of error that was made during this experiment was the measuring of the baking soda, so it could have been more exact. A solution to this error would have been to use more precise scales like scales that measure to 3 decimal places rather than to 1 decimal place to get a more exact value instead of a less accurate measurement.

The central purpose of this experiment was to determine the experimental empirical formula of an oxide of magnesium by performing a synthesis reaction. It was hypothesized that the formula that was derived from the recorded data would be identical to the theoretical empirical formula. After performing calculations with the data that had been collected within the duration of the experiment, it was deduced that the empirical formula of the product generated by the synthesis reaction was Mg5O6. Since the calculated formula did not match the postulated formula, MgO, the inceptive hypothesis was confuted. There was a large discrepancy in the results of students who replicated this experiment, the variation in data possibly having been evoked by the dissimilarity in

This statement represents the idea that technology wasn’t the one to make the world what it is today. Sorry Suzuki but I think you’re wrong. Without today’s technology trading goods would be much harder. Communication between continents would be almost impossible. Without our modern day technology we wouldn’t have cars or even electricity for that matter, we wouldn’t have the ability to fly across the world or use lifesaving technology on a person who is near death.

Once iodine was dropped onto the circle labeled “ Saliva”, it transformed into a white/ yellow Colour, due to it granting the starch to break down properly, it transformed white as a result of there being no starch, hence it executed its main action. Once iodine was dropped onto the circle, which was labeled “HCL+ saliva”, was divided into two colours, white and navy blue, this arose because the starch did not get broken down. The enzyme got denatured with the extension of hydrochloric acid of hydrochloric acid. The acid found in hydrochloric acid obtains a low level oh pH (2), causing it not to be broken down, rather to be denatured, confirms amylase can’t continue it’s activity without a particular high amount of acid, (that is found in stomach acid). My hypothesis is incorrect due to the fact that my prediction is

What is the longest you have gone without sleep? Sleep is a natural period of suspension that our body uses to recharge and restore itself on a daily basis. A study shows that you can last up to 11 days without sleep. Everyone has different habits of sleep but, according to scientists we all need at least eight hours of sleep. In this essay, I will discuss how much sleep we need, how sleeping and not sleeping affects us, how you can catch up on lost sleep.