"Your data of the density of sodium chloride solutions should have produced a straight line when plotted how could this plot be used to determine the density of any concentration of sodium chloride so" Essays and Research Papers

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    selling price. Pat Sullivan saw a bag at a trade show that she would sell to her customers for $85. What is the most she could pay for the bag and still retain the 45% markup of the selling price? P=selling price C=cost of product R=percentage markup P=C(1+r) 85=C(1+45%/100=1.45) C=85/1.45=58.62 Check back 58.62*45%=26.379=26.38 58.62+26.38=85 Answer: Most she could pay for the bag and still retain markup of 45% is: $58.62 6. Q=Jeff Jones earns $1‚200 per week. He is married and

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    Rennet (pron.: /ˈrɛnɨt/) is a complex of enzymes produced in any mammalian stomach‚ and is often used in the production of cheese. Rennet contains many enzymes‚ including a proteolytic enzyme (protease) that coagulates the milk‚ causing it to separate into solids (curds) and liquid (whey). They are also very important in the stomach of young mammals as they digest their mothers ’ milk. The active enzyme in rennet is called chymosin or rennin (EC 3.4.23.4) but there are also other important enzymes

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    conditions; low‚ medium‚ and high density. The effects of different population densities on the survivorship and reproduction of Daphnia are observed over a two-week period within a lab environment. Over the two week period‚ the numbers of parent Daphnia alive and dead are recorded daily‚ along with the amount of offspring produced each day. From the main parameter investigated‚ the net reproductive rate‚ the results of the experiment support that higher densities result in less successful reproduction

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    studies that takes advantage of a protein’s amphoteric nature to determine its molecular weight and charge by running the sample through a gel matrix under the influence of an electrically charged field. A popular example of gel electrophoresis is Sodium dodecyl sulfate-polyacrylamide electrophoresis or SDS- PAGE which has been used in this experiment to supposedly determine albumin and casein’s molecular weights respectively. The system used in gel electrophoresis consists of 3 major parts: a stationary

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    Strategy I am investigating how the rate of reaction differs when we change the concentration of Hydrochloric Acid whilst reacting with Magnesium. The rate of reaction is explained by the Collision Theory. This theory explains how various factors affect the reaction rates and how chemical reactions occur. The 4 factors of the Collision Theory are: • Temperature • Concentration • Surface area • Catalyst I am investigating how different concentrations of acids affect the rate of reaction. However

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    HCl‚ FW = 36.5‚ Density = 1.2 1M = 83mls = 1N (Use 86mls) 250ml 0.1M = 2mls = 0.1N 1 liter 0.1M soln = 8.6mls = 0.1N | Oxalic acid H2C2O4.2H2O‚ FW = 126.07‚ Eq. = 63g/l 250ml 0.05M = 1.575g = 0.1N | Potassium hydrogen phthalate KH(C8H4O4)‚ FW = 204.23‚ Eq. =204g/l 250ml 0.1M = 5.105g = 0.1N | Potassiun hydrogen iodate KH(IO3)2‚ FW = 389.92‚ Eq. 73.07g/l 250ml 0.1M = 9.75g = 0.1N | Sodium carbonate Na2CO3‚ FW = 106‚ Eq. =53g/l 250ml 0.05M = 1.325g = 0.1N | Sodium hydroxide NaOH

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    OUR ATTITUDE DETERMINES YOUR FUTURE DO NOT PROCASTINATE! TIME is money and TIME does not wait for anybody. If you sit and wait‚ nobody can help you and nothing happens. You will still be what you are‚ 3 or more years from now. You will be in the same situation‚ doing what you are doing now or worst‚ not doing anything at all; No career advancement; No self development; Lack of work experience; No improvement in income; No appropriate qualification; and possibly even out of job!  On the contrary

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    presence of MgSO4‚ NaF and Sodium Pyruvate Hypothesis In the fermentation of rate of yeast‚ S. Cerevisiae‚ there will be a higher/ faster rate of ethanol production‚ However‚ using catalytic enzymes would make the rate more faster‚ and MgSo4 will have a higher rate of CO2 than that of NaF and Sodium pyruvate as it act as a more better catalytic enzyme than the others. Methods Preparation of Tubes A solution of yeast and glucose was prepared with different concentration of enzymes. In All the tubes

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    point of this investigation is to find out the concentration of the sulphuric acid in my experiment. I will do this by titrating the sulphuric acid with sodium carbonate. H2SO4 + Na2CO3 à Na2SO4 + H2O + CO2 Acid + Alkali à Salt + Water + Carbon dioxide Ratio of sulphuric acid to sodium carbonate: H2SO4 : Na2CO3 1 : 1 Concentration of sulphuric acid: H2SO4 is approximately 0.05 - 0.15 moldm-3 The average concentration of the sulphuric acid is: 0.05 + 0.15 = 0.1 moldm-3 2 Concentration (moldm-3)

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    1. How is electricity produced? The most simple way of producing static ekectricity is by rubbing or friction. When you rub two different kind of materials that are insulator‚ you can transfer electrons from one substance to another. Nowadays‚ to create electricity we use battery and generators. Voltage can be made by heart‚ light or mechanical pressure. http://science.howstuffworks.com/electricity-info2.htm 2. Where and how is electricity used? Electricity gives us ability to produce

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