Experiment six_ Friction

According to Riippi et al. (1998), briefly discuss the effects of increased compression force to the following tablet properties: Disintegration time Surface profiles (as seen on SEM photographs)

What is the standard value/limit/range of viscosity used as a reference when determining the viscosity of syrup? (Based on United States Pharmacopoeia and British Pharmacopoeia)

need all parts in detail don't copy or else I will downvote need explanation y other options are incorrect

Phase change properties of pure substances Cu C6H12 C (C6H5CH₂)₂0 (CH3CH₂)20 CH3CH₂OH (CH₂OH)2 NH₂COH Au C C6H14 H₂ copper cyclohexane diamond dibenzyl ether diethyl ether ethanol ethylene glycol formamide gold graphite hexane hydrogen 1084.62 6.7 4440 1.8 -116.22 -114.14 -13.0 2.57 1064.18 4489 -95.27 -259.16 2560 80.7 298 34.4 78.24 197.5 217 2836 3825 68.72 -252.879 0.385 1.841 0.51 2.369 2.438 2.394 2.389 0.129 0.709 2.27 14.304 13.26 2.68 -- 7.19 4.931 9.96 8.44 12.55 117.4 13.08 0.12 29.97 45.6 26.52 38.56 50.5 60.2 324 28.85 0.9 280.3 193.7 242 446 -- 234.4 -240.212 40.2 35.9 61.7 80 29.9 12.69

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Viscometer is used to measure the viscosity of a series of dilute solutions of a polymer in toluene at 30°C. (1) Intrinsic viscosity is the most useful of the various viscosity designations because it can be related to molecular weight by the Mark-Houwink-Sakurada equation, [n] = KM. Calculate the viscosity average molecular weight for this polymer by using the data given in Table 2. Given that the Mark-Houwink constant, K is 12 x 10-5 dl/g and a = 0.71. 0.505 0.595 0.804 Concentration 0 (g/dL) Flow time (s) 67.94 0.402 107.70 121.05 Table 2 132.77 161.39 1.207 227.84

Ascetic acid with a specific gravity of 3.25 has a kinematic viscosity equal to1.35 × 10-6 m2/s , what is its dynamic viscosity?

4) In general, if the viscosity is very high at the melting position of the corresponding crystalline phase which would form the melt, it is much easier to form glass for this melt. True or False 5) The glass fiber is possible to have a tensile strength even larger than that for iron or structural steel. Therefore, in the practical applications, we should be able to use glasses for the same purposes of the iron or structural steel. True or False

What other method besides conductivity can be used to determine CMC  (critical micelle concentration)?

A cellulose sponge, 7.0cm x 12cm x 2.5cm, weights 12.0 grams. Calculate the specific gravity of the sponge.

What do the symbols TD and TC mean on volumetric glassware?

What is the amount of liquid being measured in the P20 micropipettor below?

The time of efflux of water through an Ostwald viscometer is 0.60 minutes. For the same volume of an organic liquid of density 1.75 g/ml the time is 1.25 minutes. Find its absolute viscosity at 20° C is 1 cP.

Determine phosphate concentration of a water sample using the following information: Standard curve- slope: 1763.2 y-int: 0.011806 R^2: 0.99181 Absorbance of water sample: 0.013

Please use phase diagram to explain why micro-segregation and macro-segregation happen during practical solidification.

For each of the following statements, answer TRUE or FALSE and explain your answer briefly. Corrections for water density, thermal expansion, and buoyancy difference are always required for the calibration of volumetric flask.

You are given three unknown samples stored in screw-cappedcontainers and was told to analyse them. You noted that Container A iscloudy and have some particles that are staying near the bottom of thecontainer. Container B is translucent while Container C is transparent. If thecontents of Container A can be separated by simple decantation,what isthe particle size that BEST describes its composition?i. <1 nmii. 1 nmiii. 1 nm-100 nmiv. >1000 nm

Cell A has a surface area of 50 um? and a volume of 10 um. Cell B has a surface area of 14 um and a volume of 7 um. 3 Using the information above, determine the surface-area-to-volume ratio of each cell. What is the SA:V ratio of the cell that will exchange materials with its environment at the fastest rate of diffusion? -1 um Show Calculator

Consider the following scenario: a small amount of a solid got into a sample when preparing the capillary tube to determine its melting point. The student decided to take the melting point anyway. The student observes the following: (a) a sharp melting point (<2oC); (b) a melting point that closely matches the literature reported value. Which of the following conclusions will not be justified by the experimental results. The solid was a soluble impurity in the liquid phase. The solid was an insoluble impurity in the liquid phase. The solid was a sample of the same compound.