them to mix if they were not mixed previously. Q-4. How does the diffusion of Honey vary with the diffusion of ink?why? Ink diffuses at a faster rate as compared to honey. This can be explained taking in to account that honey is a more viscous liquid as compared to ink. Therefore the low viscosity of ink allows it to diffuse at a faster rate than honey in a solution. Q-9 Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature ? Carbon-di-oxide
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1.2 158 310 Polystyrene 1.05 104 240 Polyvinyl chloride 1.4 62.5 160-172 Table 1 Properties for five known polymers (Callister 737-775) The melting temperature of a polymer is the point at which it transforms from the solid form to a viscous liquid in which there is little molecular order (Callister 500). This temperature depends on the stiffness of the molecular chain‚ molecular weight‚ and the degree or branching (Callister‚ 502). Chain stiffness is controlled by the ease of rotation about
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box. 3. Attach the stopcock to the tip of the titrator by placing the larger‚ clear‚ plastic end of the stopcock into the tip of the titrator and then twisting the stopcock into place. The stopcock should fit tightly into the titrator‚ so that the liquid will not leak. 4. Stack the textbooks on top of one another or stack two textbooks on top of the LabPaq box. 5. Clamp the test tube holder around the middle of the titrator and slide the long end under the top two books in the stack. Place a sheet
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of the glycerin (l). Dependent Variable: The dependent variable of this experiment is the viscosity s -1 of the glycerin (l). Controlled Variable(s): The controlled variable(s) are: the liquid used‚ the marble used‚ the distance the marble is dropped‚ the volume (mL) of glycerin in the graduated cylinder. The liquid used is glycerin. The same marble is used throughout the experiment‚ and it has a mass of 4.61g±0.01g. The distance the marble is dropped is 24.70 ±0.05cm. The amount of glycerin in the
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lost(Data 2 – Data 4) | 1.041g | 1.030 g | 6. Percent Water in unknown(Data 5 / Data 3) X 100 | 50.024 % | 51.449 % | 7. Percent Error | 2.297 % | .486 % | Observations – Trial 1: The hydrate is bubbling and some of it is melting and becoming a liquid. Evaporation is occurring and the melted part is hardening to form a consistent solid. The sample is sticking together instead of being in separate granules. The sample has dried up and is becoming crusty. Trial 2: The observations of trial 1 are
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can be prevented from occurring. Since the hydrostatic pressure of the mud depends directly on the density of the fluid and if the hydrostatic pressure is much greater than the formation pressure‚ it can lead to the losing of the continuous phase (liquid phase) of the drilling fluid to the porous formations (loss circulation). Conversely if the hydrostatic pressure of the drilling fluid is less than the pressures of the formations encountered‚ this can lead to the gushing of the formation fluids into
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IB Chemistry Lab Report Design Example— Effect of Temperature on Solubility of Potassium Chloride in Water Research question How does temperature affect the solubility of potassium chloride in water? Hypothesis As the temperature of water increases‚ the particles of solid Potassium chloride‚ KCl‚ which are absorbing energy from its surrounding‚ start moving more easily between the solution and its solid state because. According to the second law of thermodynamics‚ the particles will
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Gargar IV – St. Ezekiel 10/7/13 Introduction A lava lamp (or Astro lamp) is a decorative novelty item‚ invented by British accountant Edward Craven-Walker in 1963. The lamp contains blobs of colored wax inside a glass vessel filled with clear liquid; the wax rises and falls as its density changes due to heating from an incandescent light bulb underneath the vessel. The appearance of the wax is suggestive of pāhoehoe lava‚ hence the name. The lamps are designed in a variety of styles and colours
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Effects of Hydration on the Human Body Rebecca St. Clair SCI/241 January 9‚ 2011 Ms. Katherine Jones‚ Ph D Water is an essential nutrient that provides health maintenance by regulating body temperature‚ providing lubrication and shock absorption‚ and is essential to maintain proper physiologic functioning. Over half of the human body weight is comprised of water. Water helps to regulate many human body functions such as: body temperature‚ and the amount of water lost through kidney functions
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INTRODUCTION Gas exchange is the movement of respiratory gases across a membrane through diffusion. Diffusion is the process of which the respiratory gases across the gas exchange membrane (oxygen from the environment into the body‚ carbon dioxide from the body to the environment). Using the concentration gradient along the gas exchange surface. For gas exchange to occur these three Features are needed; the gas exchange surface needs to be moist so that the oxygen and carbon dioxide can dissolve
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