The goal for our lab activity was to make a silver mirror by reducing silver ions with dextrose. The materials that we used were acetone‚ 5 mL of 1.5 M ammonium nitrate solution (NH4NO3)‚ 5 mL of 0.5 silver nitrate solution (AgNO3)‚ 10 mL of 5% dextrose solution (C6H12O6)‚ 10mL of 10% sodium hydroxide solution (NaOH)‚ a 50 mL beaker‚ a 250 mL Florence flask with a rubber stopper‚ a 10 mL graduated cylinder‚ a waste beaker‚ and distilled water. The first thing we did was rinsed the beaker‚ cylinder
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influence the population of fruit flies? 2. Do fruit flies reproduce faster in cool or warm temperatures? ie. Is the reproduction rate of fruit flies faster in warm temperatures or cooler temperatures? Hypothesis: Using two separate 750g boxes of peaches‚ one box placed in a warm environment (in front of a window allowing direct sunlight onto the peaches)‚ while the other is placed in a cool environment (beneath the kitchen sink)‚ over a period of two weeks‚ fruit flies will tend to reproduce
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producer and distributor of fruit and vegetable juices. Industry Strategic Analysis Threat of New Entrants: In the fruit juices industry there are high entrance barriers because there are big companies that have economies of scale because of the great amount of products they sale‚ and this companies have machinery to make a lot of juices of different fruits and vegetables‚ making it easy for big companies to have economies of scale. Many of these companies not only make fruit juice‚ but have products
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DIFFERENT STORAGE TECHNIQUES FOR FRUITS AND VEGETABLE Food spoilage: Every change in food that causes it to lose its desired quality and eventually become inedible is called food spoilage or rotting. Factors affecting storage life The natural limits to the post-harvest life of all types of fresh produce are severely affected by other biological and environmental conditions: Temperature: An increase in temperature causes an increase in the rate of natural breakdown of all produce as food reserves
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Hydrogen peroxide and iodide ions Aim: To determine the rate equation for the reaction between Hydrogen peroxide and iodide ions‚ and to investigate the effects of a catalyst and temperatures on the reaction and to derive the activation enthalpy. Background knowledge: 1Hydrogen peroxide reacts with iodide ions producing iodine‚ when in an aqueous acid solution. H2O2 (aq) + 2I- (aq) + 2H3O+(aq) I2 (aq) + 2H2O(l) To detect iodine you can look at the color shown by the addition of starch
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Basket and Fruit paintings in the aspect of subject matter and style. As and subject matter we see that both artist chose still-life with fruits on the desk. However Zekai Paşa used richer table with more different kinds of fruits. When we look at the Cezanne’s work we see only apples and pears. But in Zekai pasha’s work we see watermelon‚ melon‚ grapes‚ pears‚ apples and other different fruit. However in general both paintings have a subject matter that is still-life with fruits. When
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mysterious fruit. At the end of this letter I am going to give you a few recipes that have mango in them so you can try some mango in styles and see how it can be used in so many different ways. A mango is a tropical fruit that originated in Southeast Asia. Some people believe that the mango has been gathered for over 4‚000 years. it believed that there is over 100 different types of mangoes. The ones found in the U.S. are normally imported from Mexico and South America. Its a fleshy fruit growing
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The product Ester is in equilibrium to the reactants acid and alcohol. Ester is responsible for the smell and aroma of different fruits. After using the Fisher reaction‚ a combination of techniques is used to separate the product. Introduction Esters are naturally occurring compounds that possess a distinctive odor. It is responsible for the smell of different fruits such as bananas and strawberries. Esters are most commonly from Carboxylic acids‚ and Alcohols. They have a pleasant and fruity
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Hass avocados are a fruit that unlike many other avocados are available all year long. While many brands of avocados stay a light to dark green color‚ these avocados are a little bit different. The skin is a bumpy texture that is green before it matures and turns black when the avocado is ripe. In the middle of the avocado is the pit‚ or also known as the seed. The seed sizes are small in Hass avocados which means that it has a large percentage of flesh that can be used after the skin has been peeled
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Effect of ions on living organisms (24 marks) An ion is a charged atom or molecule. This is because it does not have an equal amount of protons and electrons‚ therefore giving the atom an overall charge. An example of an ion is ‚ this is sodium and the plus sign represents an overall positive charge. Ions are very important to living organisms as they are essential for life‚ they play an important role within the cell allowing mechanisms within the living organisms such as respiration‚ to take
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