or stretch the surface of liquid. Water has a greater surface tension of most liquids Vector-Transporter‚ “in transit” water is a vector for diseases Cholera-parasite/deadly. Caused by a bacteria called Vibrio (vomiting and diarrhea at the same time‚ majority of the people die in 7 days‚ rapid dehydration) Hydrogen Bonds-Between molecules‚ NOT atoms‚ also the reason why water has a high/strong surface tension. Heat of Vaporization-the quantity of heat a liquid must absorb for 1 g of it
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The solute is the substance that dissolves. The solvent is the substance that does the dissolving. Solutions are homogeneous and do not show the tynall effect. E.g. salt and water. Suspensions They are heterogeneous mixtures of a solid and a liquid in which the solid does not dissolve. Suspensions will settle when left undisturbed. Suspensions will show the tynall effect. E.g. sand and water Colloids They are mixtures with characteristics part way between solution and suspension. Colloids
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Under armour is sports performance apparel make athletes stronger‚ faster and better * Soft‚ lightweight‚ stretch-blended spun poly in a generous‚ fashionable cut. Cotton just can’t compare. * UA Tech® HeatGear® fabric wicks sweat away from your skin to help you stay cool‚ light‚ and comfortable * Armour®Stretch accelerates dry time and improves mobility with built in 4-way stretch. * Anti-Odor technology—anti-microbial treatment prevents the growth of odor-causing bacteria.
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They found competition in those categories‚ brands that were already positioned in the market and Dettol couldn’t compete. The only product that was successful in sales was the soap and liquid soap‚ probably because these products are strongly associated with germ killing. It achieved 44% of value share in liquid soap.
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solvent Pressure of solution containing unknown mu = 8.69 g mp = 250 g Find Calculate the molar mass Mw‚u of this unkown compound. Strategy We’ll start with Raoult’s Law (eq 5.21 on pg 164) which relates the partial pressure pa of a liquid in a solution to its pure vapour pressure p∗ by its mole fraction in solution χa . a pa = χa p∗ a This allows us to calculate the mole fraction of 2-propanol χp (in the solution with the dissolved unknown) to the solutions vapour pressure pp
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Daphnia Experiment Report 1. Introduction Caffeine is found in many plant species‚ where it acts as a natural pesticide. It is found most commonly in cocoa‚ tea and coffee‚ but is also artificially added to some soft drinks such as cola to act as a flavour enhancer. When consumed by humans‚ caffeine works as a stimulant causing amounts of released neurotransmitters to be increased. High use of caffeine has been related with raised blood pressure‚ restlessness‚ insomnia and anxiety which‚ in
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Formation Dynamics Tester) and PVT Express are marks of Schlumberger. CHEARS is a mark of Chevron. Teflon is a mark of E.I. du Pont de Nemours and Company. 14 A g as-condensate reservoir can choke on it s most valuable components. Condensate liquid saturation can build up near a well because of d rawdown below the dewpo i nt pressure‚ ultimately restricting the flow of gas. The nearwell choking can reduce the productivity of a well by a factor of two or more. Th i s phenomenon‚ called condensat
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solid dosage forms upon exposure to liquids into small fragments‚ which promotes rapid drug dissolution. The disintegration process for a tablet occurs in two steps. Firstly‚ the liquids wet the solid and penetrates the pores of the tablets. Thereafter the tablet breaks into smaller fragments. Disintegrants to be used in plain tablets are classified into: Disintegrants that facilitate water uptake -These disintegrants act by facilitating the transport of liquids into the pores of the tablet may
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Name: Soo Jin Park Date: 02/20/15 Exp 5: Liquids and Solids Lab Section: 73427 Data Table: Boiling Point Trial 1 Trial 2 Trial 3 Temperature when the last bubble has emerged __86.5˚C _89.4_˚C 87.6_˚C Average temperature from all three trials 87.8˚C % error __6.55_% Melting Point Trial 1 Trial 2 Trial 3 Temperature when the acetamide melts _85.7_˚C 89.5__˚C 87.4_˚C Average temperature from all three trials __87.5˚C % error __8.07__%
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Abstract: This experiment consisted of the separation of sodium chloride and silica. The mixture was separated by extracting the sodium chloride with water and drying both substances. Adding water to the mixture‚ stirring‚ then decanting the resulting liquid twice extracts the dissolved sodium chloride from the silica. Heating both sodium chloride and silica separately provides the mass of each. The data from this experiment can be used to calculate the percent composition of sodium chloride and silica
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