-The data was not processed and generated automatically between several modules Alternative solutions: i. Buy new software ii. Develop in-house accounting system iii. Outsourcing the system Problem: Documents are not properly pre numbered, recorded and documented -Sales invoice are manually produces and not pre-numbered -Monthly statement of account not periodically prepare Alternative solutions: i. Adopted auto pre numbered system ii. Implement manual pre numbered system Problem: Lean
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conclusion that since hydration shells surround all the table salt crystal ions when salt and water are mixed, this allows the water molecules to come close to each other, thus reducing the overall volume of the solution and the volume of a drop of water. The 2% concentration solution, which had the largest amount of sodium chloride in this experiment, had the largest decrease in the volume of a drop of water. Thus, the data I collected matched this information since there was a decrease in the
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sucrose in each solution Dependent Variable: Percent difference in mass of each egg after soaking in the sucrose solutions Experimental Question: If we change the amount of sucrose in each solution that the eggs will sit in, how will this affect the difference in the mass of the eggs? Hypothesis: If an egg is placed in a 4 M sucrose solution overnight, then that egg would lose a greater percentage of its mass than the eggs placed in any other solutions tested, because the solution it is in has a higher
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Q1 - Absorbance of Cyanocobalamin Vitamin B12 at wavelength 460 nm was 0.336 - Absorbance of Cyanocobalamin Vitamin B12 at wavelength 620 nm was 0.018 - The Concentration of Cyanocobalamin Vitamin B12 was 0.2 Molar Absorptivity In order to calculate the molar absorptivity I used the following equation : -Absorbance = 0.336 -L = 1 -Concentration = 0.2 ε = A / l x c so 0.336 / 1 x 0.2 = 0.0672 …. The molar absorptivity of the wavelength 460nm was 0.0672 - Likewise, the wavelength 620 has been
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molar concentration of O2 in the Dead Sea. 3. Suppose we make a solution by dissolving 42.5 g of I2 in 1.50 mol of CCl4. a. What is the molality of this solution? b. Suppose we wanted to use our 42.5 g of I2 to make a 0.500 m solution. What volume of CCl4 would we need? The density of CCl4 is 1.589 g/mL. 4. We dissolve 200.0 g of NaCl in 684.5 g of water and find that the density of the solution is 1.15 g/mL. Calculate: a. The % by mass of NaCl
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Solutions to Grooming Teens for Adulthood Reasoning and Problem Solving CST 1 November 30, 2009 To solve a problem one must often dive beneath the surface of the reflected obvious to reveal the rest of the issue hidden in the depths below. In Task one for this course the question of what is the best way to prepare teen’s for a successful adulthood has been addressed through several viewpoints and approaches. Just as there are multiple approaches in rearing children, there does
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most dilute solution of one of the pesticides. Work your way up to the top concentration of the pesticide, then thoroughly wash the spray top with distilled water. Then you should use the spray top to dispense control solution in order to clean the inside of the spray. Now you can move onto the most dilute solution of the 2nd pesticide and work your way up to the top concentration. When dispensing pesticide solutions it is essential that you use a new clean pipette tip for each solution to avoid
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AND MOLAR MASS: AIM The aim of the experiment is to become familiar with the colligative properties and to use them to determine the molar mass of a substance. THEORY A solution consists primarily of solvent and therefore, most of the solution’s properties reflect the solute’s properties. The physical properties that the solution and solute do not share are known as colligative properties and they depend solely on the solute concentration. Some of these properties include vapor pressure lowering
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as well 2. This is due to dipole-dipole interactions that result from the greater polarity of caffeine and hydrogen bonds between caffeine and water. To prevent the tannins from being mixed in with the caffeine, a common salt can be introduced to solution to revert back tannins to phenolic anions
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of the products (if any) will precipitate (be insoluble). Assume all reactions take place in aqueous solutions (aq). 1) ____ Ca(OH)2 + ____ HF ( 2) ____ Pb(NO3)2 + ____ K2CrO4 ( 3) ____ NaC2H3O2 + ____ H2SO4 ( 4) ____ Cu(OH)2 + ____ H3PO4 ( 5) ____ AgNO3 + ____ Na2CO3 ( 6) ____ Pb(OH)2 + ____ Hg2S ( Predicting Reaction Products - Solutions Balance the equations and predict the products for the following reactions: 1) 3 Na + 1 FeBr3
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