A spectrophotometer may be used to determine if iron and chromium are in the sample, but magnesium neither absorbs nor emits light energy in the 200-900nm region of the spectrum so it can not be determined by a spectrophotometer. Magnesium must be isolated and precipitated through the process of extraction.
Nuclear fission produces no greenhouse emissions (Alexander 1). This is also good for our atmosphere (Alexander 1). As nuclear energy is produced, there are no sulfur dioxide or nitrogen oxides being produced with it, unlike the burning of fossil fuels (Rastogi 1). These oxides can cause acid rain which is very bad for the environment
Lactic Acid Fermentation can only produce 2 ATP (as in alcoholic fermentation) but ethanol is not produced. Lactic acid is toxic to cells, which means anaerobic respiration can only occur for short
(2) Although NH3 forms OH- with water, it did not donate any proton to form OH- but only gain. Therefore, it is a Bronsted-Lowry base but not an Arrhenius base 11. Define the following terms: (5) a. strong acid: acid that
| The accident not happened on the 30th of September 2003 | The recognition has no effect to Biovail’s financial statement. (revenue has been recognized before the accident happened) | The recognition has no effect to Biovail’s financial statement. (revenue not recognized yet because the delivery still not occurred) | 3) The revenue recognition requirements in accordance with U.S GAAP. i) Persuasive evidence of an arrangement exists; It seems clear that there is an ongoing relationship between Biovail and the Distributor and that certainly there was a bill, purchase order and/or invoice in order to support this sale. ii) Delivery has occurred or services have been rendered; The delivery was never realized due to the truck accident happened on the 30th of September 2003. iii) The seller’s price to the buyer is fixed or determinable;
This tells us that there was still a lot of mixture that was not distilled. Most likely, because Heptane has a higher boiling point than Hexane, most of the solution still left over that was recorded in the GC was Heptane. Another thing that sticks out is that there was no peak recorded in our second fraction. This could mean several different things. Because no peak was recorded, it leads us to believe that a bad fraction was taken.
Someone believe that diet soda is healthy because it is with low or even none calories which makes us not easy to gain weight comparing to drinking regular soda. In addition, diet soda gives benefits for the diabetes, as the artificial sweeteners will not affect their blood sugar. It will not raise blood glucose level due to the lack of carbs in diet soda. Furthermore, due to the fact that diet soda does not have sugar which produces an acid in the month causing plaque production. With consideration of plaque reduction, diet soda is a better choice.
A circumstance without any of the evidences present concludes that a chemical reaction has not occurred and thus a displacement reaction has not taken place. Figure 1 Figure 1 chlorine + sodium iodide iodine + sodium chloride (non-metal) (compound) (non-metal) (compound) Cl2 + 2 NaI I2 + 2 NaCl Figure 2 Figure 3 Figure 3 (Source of Figure 3: http://vinstan.wikispaces.com/Chapter+3+++++Chemical+Reactions) Purpose: The main objective of Activity Series of Metals is to determine the reactivity of common metals. For this lab we should be able to find out and predict the products that come from a
Hydrogen peroxide is also a dangerous, very potent by-product of metabolism, so it is essential that it is broken down quickly, otherwise it would cause damage to cells. Hypothesis I believe that as the concentration of the hydrogen peroxide (substrate) decreases, the rate of reaction will decrease consequently. This is because there will be fewer collisions between the substrate and enzyme molecules (catalase in yeast) – because there are fewer molecules of hydrogen peroxide, so there will be a decrease in enzyme-substrate complexes formed. The reaction will then stop because all of the active sites become saturated with substrate because the enzyme is the limiting factor. This will result in a decreased volume of oxygen being produced as one of the by-products of this reaction.
Burning Magnesium Question: How will the mass of magnesium change when it is burnt? Evie: The mass will go up because oxygen is being added to the magnesium. I support Evie’s point of view as this has been proven from experiments and supporting evidence. Ethan: Oxygen doesn’t weigh anything, so the mass won’t change. Some scientist’s had this view in the past, which has now been refuted and replaced by more current thinking about how elements are arranged.