Background Information: Yeast fermentation is directly affected by the change in temperature, because the rate of chemical reactions is affected by temperature. If the yeast has been exposed to its optimum temperature (66.667 degrees Celsius) then it will give off the highest carbon dioxide production. As the temperature gets higher, the yeast will produce more carbon dioxide, until at some point carbon dioxide production will decrease, that is when the yeast cells have become denatured due to the increase in temperature. Chemical reactions
Discussion The ideal Van't Hoff factor for potassium chloride is 2, because the compound dissociates into its ions, K+ and Cl-. The greater the Van't Hoff factor means the more a compound lowers the freezing point temperature of the solvent it dissolves in. For a liquid to freeze it must form a lattice, a three-dimensional arrangement of particles that make up a crystalline solid, and the presence of solute particles interferes with the ability of the solvent particles to form a lattice. To compensate the system must be brought to an even lower temperature to freeze, and the more particles that are present within the solvent, the larger that freezing point depression becomes.3 Thus, the obtained value of 2.05 means that potassium chloride lowered
Hypothesis: If dry ice is placed in Coca Cola, then it will sublimate the fastest because the carbonation bubbles that are in Coca Cola will scrape the sides of the piece of dry ice creating friction and heating it up the fastest. Table 1. Experimental Variables
This disproved my hypothesis that Powerade would have the most electrolytes and proved that orange juice contains more and would be better for hydration. It answered my investigative question of which liquid would have the most electrolytes with orange juice coming in first place, Powerade in second place and tap water in last place. I would like to improve the experiment by adding in more variables such as more substances to test and testing at different temperatures to see if the temperature has an effect on the conductivity. I also feel that I would like to get more copper wire to change it after each trial as I think the oxidation of the copper wire caused my later readings to fluctuate and perhaps be inaccurate. I therefore conclude that orange juice proved to be the most conductive and that the oxidation o the copper wires caused some of the later readings to fluctuate but overall I feel that the results were accurate.
will be reabsorbed into the body, but other wastes such as caffeine will pass through when it reaches the tubular secretion step. The urine from this drink will be very concentrated so it will probably be more acidic and have a lower pH level. With a lot solutes in the urine the surface will probably be very dense with the urinometer, which will cause it to float more and read a lower number. The release of ANP will help get rid of the surplus of solutes and caffeine, this means that the flow rate volume for coke will probably be a high
Antacids are taken in order to neutralize the acids in your stomach to prevent heartburn. Looking at the results, one can see that the key component of antacid composition, NaHCO3, increases the pH of the blood because it forms a base and a weak acid that won’t affect the pH. In turn, taking a few antacids are fine because the body will counteract the mechanism by decreasing the pH of the blood, but if one takes too many antacids, the body won’t handle the change and will then allow the pH of the blood to increase, causing alkalosis. The use of an IV injection of lactated ringers is a definite cause of alkalosis because the injections counteract acidosis caused by renal failure as well as an increase of acids in the body. When looking at the results, one can see that an increase in the acidic salt, NH4Cl, increases the pH so in theory, the lactated ringer injections need to counteract this.
There was a drop in kinetic energy, so the vapor pressure inside of the can became extremely low. The drop in pressure meant that the molecules hit the sides of the can with less force and hit the sides less frequently. The pressure inside of the can was then much lower than the atmospheric pressure outside. The molecules outside crushed the can because when they hit the outside of the can, they hit it more frequently and with more force compared to the molecules inside of the
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.
Energy drinks are served as cold beverages, that can be consume faster than hot beverages such as coffee or tea. 4. Energy drinks have different types of flavours and brands that can attract the consumer which hot beverages such as coffee or tea do not attract the people much. 5. Energy drinks also acts as an additional supplement to increase their effects such as vitamins, taurine, minerals and other herbs.
I was surprised that the Sprite had the biggest amount of gas because it was a clear soda. I thought the Coca Cola was going to have a bigger amount because it is a dark soda and I thought it would have more gas than it did. I knew the diet coke wouldn 't make a lot of gas. If I could improve my project I would have more of a variety of soda’s and pop