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Problem 1
Calculate the work done in breaking up a drop of petrol of volume 1 cm3 into 109 drops. Surface tension of petrol is given as 26 dynes/cm.
Problem 2
Find the pressure difference inside and outside a rain drop of diameter 0.02 cm. What would be this pressure if on evaporation, drop reduces to a size of 2x10-5cm .
Problem 3
Water rises to a height of 5 cm in a certain glass capillary tube. In the same tube the level of mercury surface is depressed by 1.54cm. Compare the surface tensions of water and mercury. Specific weight of Mercury is 13.6 x103 Kg/m3 and that of water is
103 Kg/m3. Angle of contact of glass with mercury and water is 130° and 0°, respectively.
Problem 4
Experimental values of surface tensions of a few metals and other substances are shown below.
Material y, J/m2 T,°C
W (solid) 2.900 1727
Au(solid) 1.410 1027
Estimation of three dimensional pressure, P, for the solid surface (W and Au, respectively).
Assuming the thickness of the interaction is a few atomic layers (-1 nm)
mining and metallurgy assignment metallurgyyou need to assess the viability of an ore classification algorithm to be
Important information about Chemicals for Indoor Concrete Flooring Explanations on high solids floor finish chemicals used on indoor concrete flooring
Gas Absorption and Transfer Operations: Column Diameter Calculation, A gas absorption column to handle 3630 kg/hr of a gas is being designed. Based on pressure drop, entrainment and foaming considerations
It is common that people are exposed to more than one hazardous substance at a time. The different substances may interact such that one substance may alter the toxicity of one or more of the chemicals present. Discuss the possible interactions th..
Weight Percentage of MTBE (methyl tert-butylether) in Gasoline : Oxygen Content, If gasoline had a hypothetical chemical formula of C8H17, and we knew the chemical formula of MTBE as CH3OC4H9, what weight (actual weight and percent by weight) of M..
Main objectives of the computer aided modeling and simulation system - Critically analyze the applicability, domain, features and advantages of the various systems available.
Calculate the drum temperature, calculate the vapor and bottoms compositions and completely size the tower: Diameter, Height, weight.
Prepare the design and evaluation of a new chemical manufacturing process.
the path followed by a fixed amount of a perfect gas during a reversible process is described by the following
Defluorination & adhesion properties, Using ion bombardment-If Teflon is deflorinated to increase it's adhesion properties, then what would the changes in surface characteristics be?
Describe issues to be considered when developing an evacuation procedure to help ensure the safe evacuation of employees and visitors in the event of a fire Outline the benefits of undertaking regular fire drills in the workplace
Determine the d-spacing (Å), to 3 decimal places
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