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If this lens is then immersed in silicone oil with a refractive index of 1.52, what will the focal lens of the lens be in this environment
Light of wavelength 550nm in air is found to travel at 1.96*10^8 m/s in a certain liquid. Determine the wavelength of the light in the liquid
A 0.146 g sample of an unknown monoprotic acid (molar mass = 83.0 g/mol) was dissolved in 50.0 mL of water and titrated with a 0.101 M NaOH solution. After the addition of 14.0 mL of base, the
RbNO3 Express your answers as ions separated by a comma. If the compound is not soluble, enter noreaction
A half-cell containing which of the following metals would produce the greatest emf when it is coupled with a half-cell containing aluminum metal
A thin metal foil separates one end of two pieces of optically flat glass (n = 1.5), the gap between the plates is filled with water (n = 1.33), What is the thickness of the foil
The standard change in enthalpy at 142oC for the following two reactions are, respectively, -23.44 and 94.67 kJ. [1] 4 X(s) + 3 O2(g) + 2 H2O(l) ? 4 HXO2(g)
a beam of light enters a piece of zircon at an angle of incidence of 30 degrees. what is the angle of refraction in the zircon
Calculate the difference in energy between the second and first levels and between the fourth and third level (i.e. find Delta E = En Upper - En Lower for n upper=2, n lower =1 and for n upper = 4,
A 50 g horizontal copper rod has a length of 1.0 m. Calculate the minimum current in the rod so that it will float in a horizontal magnetic field of 2.0 T
The energy levels of a Helium Ion, He+, may be calculated from the Bohr Theory using z = 2 for the atomic number, En = -1312.04 Z2/n2 or En=-5248.16/n2 (kJ mol-1) for n=1, 2,3,.... Calculate the fir
A playground merry-go-round (uniform disk with mass M=150kg and radius R=2m) rotates on a frictionless axle through its center. What is the kinetic energy of the child-merry-go-round-system
What are the most important kinds of INTERmolecular forces present in each of the following substances
Planet Z is 1.00×104km in diameter. The free-fall acceleration on Planet Z is 10.0m/s2. What is the mass of Planet Z
Determine the equilibrium constant for the following reaction at 298 K. SO3(g) + H2O(g) ? H2SO4(l) ?G° = -90.5 kJ
A skater rotates at 4.5 revolutions per second (rev/s) with legs together and arms raised over his head. By extending his arms, What is the new rotation rate
Calculate the of a solution prepared by mixing equal volumes of 0.21 methylamine (CH3NH2, Kb = 3.7 x 10^-4 ) and 0.61 M CH3NH3Cl.
A 1.6kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings. What is the turntable's angular velocity, in rpm, just after this event
How much heat is required to vaporize 18.5g of water at 100c. The heat of vaporization of water at 100c is 40.7kj/mole.
Laser light of wavelength 400 nm illuminates an array of very narrow slits, producing an interference pattern on a screen 70 cm from the slits. compute the separation between the slits
Starting from rest, a 12-cm-diameter compact disk takes 2.5s to reach its operating angular velocity of 1500rpm. How much torque is applied to the disk
An object's moment of inertia is 2.00kgm2 . Its angular velocity is increasing at the rate of 3.80, What is the total torque on the object
A cylinder contains 12.0l of air at a total pressure of 41.4psi and a temperature of 30c. How many moles of gas does the cylinder contain
Calculate ?Grxn at 298 K under the conditions shown below for the following reaction. SO3(g) + H2O(g) ? H2SO4(l) ?G°= -90.5 kJ P(SO3) = 0.20 atm, P(H2O) = 0.88 atm
an electric current of 1.00 A is flowing through a copper filament diameter 1.00 mm, calculate the average electron velocity v and the ?- factor, the positive and negative charge densities in the S' f