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Question - A parallel plate capacitor with 0.3 cm thickness of air between the plates has a capacitance of 15 uuF (micro-micro-Farads). Find the new capacitance when the air is replaced by mica (dielectic constant k = 6)
Classically speaking, the electron of a hydrogen atom moves in a circular orbit or radius 0.53 x 10-10m with a frequency f = 6.6 x 1015 /s. Find the current associated with this orbit.
A small object is placed 10 cm in front of a plane mirror. If you stand behind the object, 30 cm from the mirror, and look at the image - for what distance must you focus your eyes?
A thin, double convex lens has radii of curvature of magnitude 40 cm and is made of glass with refractive index n = 1.65. Find the focal length.
It is observed that 75,000kJ of heat is being lost from the combustion chamber to the surroundings per kmol of acetylene. Presuming combustion is complete determine the exit temperature of the product gases.
State an expression for the concentration of a spiked sample (X) if the 5mL of sample with analyte concentration = C was spiked with 2mL of a standard with a concentration of 25.00 ppm as well as the whole thing diluted to a total volume of 10.00 ..
calculate the new temperature in Celcius- tank of helium gas with a pressure of 270 torr at 4 degrees celcius is heated to give a pressure of 1500 torr
Density is an example of intensive physical propery of matter. What does this statement mean?
Calculate the molarity of a solution made by dissolving 0.750 grams of Na2SO4 in enough water to form exactly 850mL of solution. How many moles of KMnO4 are present in 250mL of a 0.0475 M solution
High temperature and low pressure low temperature and high pressure none of the above unless a catalyst is present If it's endothermic, it's high temp and low pressure, but does having an exothermic reaction change that?
How much of the 37.0% HCl concentration stock do you need to prepare this solution?
Acid and base
Why can the nature of the metal salt precursor be changed during the epoxide addition method so easily without altering
The elementary reaction 2H20(g) 2H2(g)+O2(g) proceeds at a certain temperature until the partial pressures of H2O, H2, and O2 reach 0.0700 atm, 0.00200 atm, and 0.00600 atm respectively. What is the value of the equilibrium constant at this temper..
What are the concentrations of OH- and H in a 0.00054 M solution of Ba(OH)2 at 25 °C? Assume complete dissociation.
Sodium cyclamate, NaC6H12NSO3, was a popular nonsugar sweetener until it was banned by the Food and Drug Administration. Its sweetness is about 30 times that of sugar (or sucrose, C12H22O11).
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