Laboratory Report: Experiment 3 Analysis of commercial vitamin C tablets Name: Cheung Chun Hin‚ Harry Class: 6L (12) Date: 14-10-2009 Objective: To determine the content of vitamin C in commercial tablets (redox titration and back titration) Principle of method: Vitamin C‚ which is ascorbic acid‚ reacts with iodine rapidly in an acidic medium. C6H8O6 (aq) + I2 (aq) C6H6O6 (aq) + 2H+(aq) + 2I- (aq) Since iodine dissolves slightly in water‚ ascorbic acid cannot be titrated
Premium Iodine Vitamin C Titration
According to the “Food Label and You” video‚ the 5-20 rule is defined in a very simple way. If a food has 5% or less of a nutrient under the daily value‚ or %DV‚ column on your food’s nutritional label‚ then that food is low in that source of nutrient. If the food has 20% or more of that nutrient under you %DV‚ then that food is high in that nutrient. For nutrients you do not want a lot of‚ you need to stick to servings containing a %DV closer to 5%. For nutrients that you do want a lot of‚ then
Premium Nutrition
A man is not defined by his muscles‚ his facial hair‚ what he wears‚ what he drives‚ or by how much money he makes. The common assumption a lot of guys have is that being male automatically makes them men. Don’t get me wrong a person must be male to be a man‚ but it is not the sole qualification for becoming a good man. A real man is one who takes care of life’s responsibilities. Such responsibilities may include obligations to family‚ friends‚ career‚ and community. A real man is a role model and
Free Man
Factors that determine investment: 1. Marginal efficiency of capital:- The marginal efficiency of capital is called the expected return of capital or expected rate of profit on an investment. PV = R + R + R + …………… + R (1+i) (1+i) (1+i) (1+i) Keynes define the marginal efficiency of capital as “ MEC is being equal to that rate of discount which make the present value of
Premium Economics Monetary policy Inflation
Experiment 5: Percent Water in a Hydrated Salt Chemistry 1300 Instructor: 2/8/12 Abstract: The purpose of this experiment was to determine the percent by mass in a hydrated salt‚ as well as to learn to handle laboratory apparatus without touching it. The hydrated salt‚ calcium carbonate‚ was heated with high temperature to release water molecules. Gravimetric analysis was used in this experiment to determine the percent by mass of water in a hydrated salt. The hypothesis of this experiment
Premium Water Chemistry Molecule
"Heredity determines personality." (a) Build an argument to support this statement. (b) Build an argument against this statement. Personality is defined as the sum total of beliefs‚ behaviors‚ attitudes and values that distinguishes an individual. Each of us has unique personalities which distinguish us from the others. Even twins who look alike and are brought up in the same environment‚ differ in personalities. A number of factors determine a person’s personality. These include environment and
Free Human Psychology Culture
Introduction In computer networking and telecommunications‚ Multi Protocol Label Switching (MPLS) is a data-carrying mechanism that belongs to the family of packet-switched networks. When it comes to getting network traffic from point A to point B‚ no single way suits every application. Voice and video applications require minimum delay variation‚ while mission-critical applications require hard guarantees-of-service and rerouting. So far‚ only circuit-switched networks have provided the
Premium Data Link Layer Internet Protocol OSI model
will be affected by the leaders choices and actions. It has been stated that‚ “ Leadership determines the fate of a country.” Spain has dealt with the outcomes of Phillip II leadership tactics. Phillip II inherited Spain‚ the Low Countries from his father Charles V. Phillips leadership determine the fate of Spain with being his orders he sent out to his people. He wanted to wipe out Protestantism and this led to his sister’s introduction to inquisition. Making the country more heavily taxed‚ a
Premium Philip II of Spain Spain English Channel
Decisions Determine Destiny In high school‚ the opportunity to do things such as drugs‚ or alcohol presented itself. The way I was raised and with my beliefs in the LDS religion I would never do something like that. Therefore‚ I always thought‚ “If I drink or smoke‚ how will I will be able to teach my kids not to do so?” I do not want my kids saying to me‚” Dad‚ since you did that stuff‚ why can’t I?” Being an example is so important these days and I believe that the world around us is becoming
Premium 2007 singles Choice 2006 albums
Laptops received a lot of hype because of their portability and their ease of use. This new technology took the computing world by storm and dominated the portable computer scene until a new device entered the market: the tablet. This device offers several of the same features as laptops but with added portability. Some individuals may feel this is the new way to compute and they can’t live without their tablet‚ whereas others say laptops can never be replaced. Laptops One of the benefits of
Premium