flask using a volumetric pipette. The volumetric flask was then filled to the mark with distilled water. The flask was covered with Parafilm and inverted to mix. The next part of the experiment was to determine the Vitamin C in a solution of known concentration. Observations of the Vitamin C sample and the amount found on the label was recorded. A tared piece of weighing paper was used to weigh 0.27 g of Vitamin C. The Vitamin C was then transferred to a clean 50 mL volumetric flask. The flask was filled
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Career Investigation of social care worker Description of Career A social care worker assists individuals and families with problems such as illness‚ poverty‚ drug addiction‚ child and spousal abuse‚ homelessness‚ and mental health. Social Care workers work between hospitals and rehabilitation centres. They may also organize support groups‚ help patients obtain community services and also help with patients other health professions and assists with job training. A social Care worker must be
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experiment‚ equilibrium will be examines in the reaction beteween the iron (III) ion and the thiocyanate ion: Fe3+ (aq) + SCN- (aq) ------ FeSCN2+ (aq) The FeSCN2+ complex ion has a blood red color while the iron and the thiocyanate ion are colorless. Therefore‚ the shift in the reaction can followed by noting a change in the intensity of the clood red color‚ which indicates a change in the concentration of the complex ion FeSCN2+. If the reaction shifts to the right‚ the blood red color will get
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examples how different aspects of development can affect one another Emily is 13yrs old. Her mum has left home. She lives with her strict father and two brothers. Her dad runs his own business and has to leave Emily and her brothers in the morning to get them ready and off to school. When Emily gets home from school she has to cook her brothers tea and do the housework as her dad is still at work and he believes that being the only girl in the house this should be her job. This may affect Emily
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How music affects the brain Music: It’s been ingrained in our culture since the first instruments were made. It is such a large part of our society; we incorporate it into our daily lives through our phones‚ television‚ and media. Music stimulates the brain through the pleasure center and sends us waves of emotions and reactions. As a DJ‚ music is essential to my lifestyle. I’m constantly listening to different beats‚ tempos‚ and rhythms. Music rises and falls with the generation at that time
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development. * the cooking process of green pepper will decrease the concentration of VC(ELABORATE) * Vitamin C is a reducing agent and can reduce DCPIP solution (a blue dye) to a colourless compound. The vitamin C content of the juices is measured by the amount of orange juice required to decolourize a fixed volume of DCPIP. The relative amount of vitamin C content of the juices is determined in this investigation. Independent variable | Dependent variable | Controlled variable |
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ENGINEERING Reaction Engineering CGC035 / CGC052 Problem Sheet 3 - Fluid-fluid reactions 1. The reaction rate for the heterogeneous reaction A(g) + B(l)→ products is second order according to the expression -rA=kCACB and it is relatively slow compared to mass transfer so it takes place in the bulk of the liquid. Combine the following rate expressions for diffusion through the gas and liquid films‚ -rA=kAga(pA-pAi) and -rA=kAlaCAi-CA‚ with Henry’s law pAi=HACAi and the reaction rate
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Question: How can different masses of salt affect the percentage of transmitted light? Variables – Independent – • Mass of salt‚ the salt added into the distilled water in grams (0.1‚ 0.5‚ 0.75‚ 1‚ 1.5) Dependent – • Percentage of transmitted light through the solution using 5 different mass of salt and a constant availability of 2g of sugar as source of food. (there are 5 trails for each conical flask representing 5 different salt masses) Controlled – What is being Controlled? How will
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person feels sad or depressed to the point that it affects his work for a long period of time (2). This can affect a person’s identity because he may see himself as a person who is constantly down and has no motivation to do anything. Living with this psychological disorder can also strain relationships because the people living around the person with depression may not understand what he is going through at the moment. Depression can also affect a person in education because the person may feel a
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To investigate the effect of different caffeine concentration on the heartbeat rate of Daphnia at room temperature. Introduction: Caffeine is found‚ and produced in many plant species to function as a natural pesticide‚ and as an inhibitor of seed germination of other nearby coffee seedlings to give it a better chance of survival. Caffeine is able to paralyze and kill certain insects upon feeding on the plants that produce caffeine. Coffee‚ tea and cocoa are common caffeine-containing
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