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Stokes' law describes sedimentation of particles in liquids and can be used to measure viscosity. Particles in liquids achieve terminal velocity quickly. One can measure the time it takes for a particle to fall a certain distance and then use Stokes' law to calculate the viscosity of the liquid. Suppose a steel ball bearing (density 7.8 ? 103kg/m3, diameter 3.2 mm) is dropped in a container of motor oil. It takes 15 s to fall a distance of 0.45 m. Calculate the viscosity of the oil.
The specific heat of mercury metal is 0.138J/gK. How much heat, in joules, is required to heat a 71.5 gram sample of mercury from -6oC to 54.4oC. Enter your answer in scientific notation with no units.
If 2.3g of sodium reacted with 1.8 of water, what would be the total mass of sodium hydroxide and hydrogen produced?
Calculating percent purity from a reaction, One of the reactions that occurs in a blast furnace, where iron ore is converted to cast iron is Fe2O3 + CO = Fe + CO2.
in the topic of calorimetry how can bumping be avoided when heating water in a
A microwave oven operates at 2.50GHz. What is the wavelength of the radiation
Depict the skeletal structure of the organic species containing the carbonyl functionality required to form 3-ethyl-1-pentanol upon metal-catalyzed hydrogenation.
In one of the neutron-induced fission reactions of U-235(atomic mass = 235.043922 ), the products are Ba -140 and Kr-93 (a radioactive gas). What volume of Kr-93(at and 1.0 ) is produced when 1.80 g of U-235 undergoes this fission reaction
Question- Consider when a clean surface of silver is irradiated with light of wavelength 230nm, the kinetic energy of the ejected electrons to be .805 ev. Calculate the work function and the threshold frequency of the silver
Consider the diffusion of dopant element A into crystalline water. The dopant rich coating is considered as a large source of A relevant to the amount of A diffused, so that the surface concentration CAs can be considered a constant.
Describe how you will separate the following mixture of ions in solution. Include an explanation/rationale of the reagent used, etc. a. Na+ , Al3+, Ni2+, Sr2+
Ozone decomposes to oxygen gas. 2 O3(g) 3 O2(g) A proposed mechanism for this decomposition is shown below. O3 O2 + O (fast, equilibrium) O3 + O 2 O2 (slow) What is the rate law derived from this mechanism
Determine the vapor pressure lowering at 27C of a solution of 75g of sucrose dissolved in 180 g of water. Vapor pressure of pure water at 27C is 26.7 torr
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