Chemical reactions

concentration of sodium thiosulfate solution (0.1M, 0.2M, 0.3M, 0.4M). Dependent - The time taken for the cross to not be seen. Control - // Concentration and volume hydrochloric acid/ volume of sodium thiosulfate solution - to ensure that the rate of reaction is only being altered by the concentration of the sodium thiosulfate solution. // Temperature of the solution - As temperature is another factor that increases the rate of…

1. The actual volume of oxygen consumed per minute, V̇O2, is calculated using an equation that is a reasonable estimate, but one must keep in mind that said equation is based on the fact that both the volume of inspired and expired air are equal and that there is no change within the gases that are stored inside the body. The same can be said for the equation that is used to calculate the volume of carbon dioxide that is produced per minute, V̇CO2. However, since it there is in fact a change in…

This reaction can yield either a Markovnikov alcohol or an Anti-Markovnikov alcohol. If the reaction is carried out in acidic conditions, the reaction yields a Markovnikov alcohol. The mechanism includes the formation of a carbocation intermediate, which has a lower activation energy when it is formed on the more substituted or resonance stabilized carbon. The nucleophile then attaches to the positive charge created by the carbocation, yielding the Markovnikov product. However, if the reaction…

Umama abid Lab Partners: Olivia, Emily Ms. Olenick SBI4U 9/23/2017 Analysis The solution in the dialysis tube turned bluish black in color due to the transfer of iodine from the beaker to the bag which contains starch and glucose . The solution in the beaker turned brown after Benedict’s test ( table 1) . This indicates that the dialysis tubing was permeable to both glucose and iodine but not starch ( work helper, 2017) . Starch didn't pass because the solution in the beaker which…

a. Potential Rating or Scoring Errors The following are some of the commonly occurring errors: o Halo effect – tendency to allow a positive (or desirable) quality, trait, or feature of an individual to enhance the appraisal ratings o Horn effect – tendency to allow a negative (or undesirable) quality, trait, or feature of an individual to taint the appraisal ratings o Rater Bias – tendency to allow individual differences (or personal characteristics) such as age, race, religion, disability, and…

others or know how to behave. These are called norms. Norms are social expectations that guide behavior. Norms explain why people do what they do in given situations. When these norms are broken they are often met with sanctions. Sanctions are the reactions people receive when breaking a norm, they can either be expressions of approval or of disapproval. Depending on whether someone broke a folkway norm or a more norm the level of sanction differs. Folkways are norms that are not strictly…

The experiment consisted of participants being in a group setting and also alone to see what reactions were made either in a group or alone. Darley and Lantane figured out that three fourths of people reacted to the smoke while alone, they responded within two minutes of noticing the smoke. After, they tried the experiment with two participants…

Introduction: Enzymes have a huge effect on the human body and other organisms. Enzymes are catalysts that are used to accelerate the reaction process by lowering the activation energy. For this experiment the catechol oxidase was extracted from potatoes. The enzyme is called catechol oxidase because the oxygen is reacting to catechol. Catechol oxidase causes the browning of the fruits and vegetables because the compound is toxic to the bacteria. The purpose of this experiment is to…

condensation reaction. HMG-CoA is reduced to mevalonic acid by 3-hydroxy-3-methylglutaryl-CoA reductase (HMGR), a rate-limiting step in human isoprenoid biosynthesis. HMGR over-expression in transgenic tobacco plants resulted in increased levels of total sterols, indicating that HMGR is a limiting enzyme also in plant sterol biosynthesis (Schaller et al., 1995). The next step in sterol synthesis is to form squalene from mevalonic acid, and this is performend by a series of reactions where the…

Ayurveda care for Kapha type body According to Ayurveda, our body is made up of five elements namely, air, water, earth, fire and space. Kapha is a combination of the elements Water and Earth whose meaning is ‘sticky’. Our body structures are formed by the energy derived from kapha energy. It supplies the vital nutrients and liquid that are needed to life to emerge and sustain on the planet. Kapha provides the body with lubrication in physical form and structure that results in the smooth and…