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At a certain concentration of reactants the rate of appearance of water in the following reaction is 0.51 M/s.
A lens is formed from a plastic material that has an index of refraction of 1.55. If the radius of curvature of one surface is 1.25 m, calculate the focal length and the power of the lens.
Why did the discrepancy between experiments and classical theory for blackbody radiation occur at high and not low frequencies
An aluminum rod is 24.0 cm long at 20°C and has a mass of 350 g. If 14,000 J of energy is added to the rod by heat, what is the change in length of the rod
Calculate the energy of a mole of photon with wavelength of (a) 200nm (ultraviolet), (b) 150pm(X ray), and (c)1.00cm (microwave).
How did the Dulong-Petit law fail to reproduce heat capacities of monatomic metals at low temperatures and how did Einstein explain and rectify this failure
Place the following complex numbers in a two-dimensional complex plane and find their absolute value lzl and phase angle arg
Draw the trinucleotide formed when a DNA polymerase catalyzes the addition of dCTP do the dinucleotide pppGA.
Green light at 532 nm lights a diffraction grating with 800 lines per cm. Diffraction pattern is on screen 7.5m away. Calculate distance between the diffraction peaks on the screen
Calculate the energy of a mole of photon with wavelength of (a) 200nm (ultraviolet), (b) 150pm(X ray), and 1.00cm (microwave).
Calculate the pH for the following cases in the titration of 25.0mL of 0.2M cyanic acid (HCNO, pKa=3.66) with 0.2M RbOH solution
The disk and the platform go from rest to an angular velocity of 8.5 rad/s in 2.5 seconds. What is the moment of inertia of the disk
Initially the stopcocks are closed. One of the flasks contains 2.0 of , the second 3.7 of , and the third, 0.10 of ethanol. The vapor pressure of at 308 is 42 and that of ethanol is 102 . The stopco
The SI units of mass density are kg/m3, but there are several other common units. One of the most commonly used units of mass density is gram per cubic centimeter, or g/cc. What is the buoyant force
A 5.0 kg textbook is raised a distance of 30 cm as a student prepares to leave for school. How much work did the student do on the textbook
As a bat flies toward a wall at a speed of5.70m/s , What frequency does the bat hear in the reflected wave
If the sun is a distance of 1.5 x 10^8 km from earth, how many minutes does it take sunlight to reach earth if light travels at 186,000 miles each second
An object is placed 2.0 cm from a converging lens with focal length 1.5 cm. Determine the location of the final image
explain how to identify a molecular compound based on a: chemical formula and on a systematic name
For lead 82Pb206 (atomic mass = 205.974440 u) obtain the mass defect in atomic mass units
one can of soup contains 305 grams of soup. The soup contains .885 grams of salt. What percent of the soup is salt
what temperature should the tube be maintained to have a partial pressure of 1.0mm of O2 in the exit gas? Assume that the total pressure of the gas in the tube is 1.30atm.
For the real or imaginary nucleus of 70X170, find the net electrical charge of the nucleus and the approximate radius of the nucleus
The bottom liquid is a relatively heavy lubricating oil, and the top liquid is water. Of the total block volume, 54.2% is immersed in the oil and the balance is in the water. In a separate experimen
What is the percentage difference between the speeds of red light and blue light in flint glass, What is this percentage difference in diamond