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Two slits are separated by .1 mm. Planar light incident on them produces a diffraction pattern on a board 1.35 m away, estimate the wavelength of light
Express the concentration of a 0.0510 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
A hollow cubical box is 0.30 m on an edge. What is the depth of the water in the box just at the instant that water from the lake begins to pour into the box from the lake
If 750 grams of ammonia and 750 grams of oxygen gas were mixed, what maximum mass of nitrogen monoxide could be produced
A 6 m board of mass 5 kg is hinged at one end, with a 60 kg block nesting on the board 202 cm from the hinge. Find the force exerted by the hinge at this angle
Use the ? - l?+ convention and the crossed arrow to show the direction of the expected polarity of the indicated bonds in the following compounds.
A 1590 kg car has just passed a diner. The closest the car came to the diner was R = 12.5 m, find the current magnitude of the angular momentum of the car about ther dinner
When the same flask is filled with concentrated sulfuric acid, H2SO4, its mass is 1026.57 g. What is the density of concentrated sulfuric acid. Assume water has a density of 1.00 g/cm3 at the temper
What mass (in grams) of the mineral ilmenite, FeTiO3, is required if you wish to obtain 7.50x103 grams of titanium metal (Ti) from the ilmenite
Express the concentration of a 0.0480 M aqueous solution of fluoride, F-, in mass percentage and in parts per million. Assume the density of the solution is 1.00 g/mL.
In one experiment, when 112 grams of calcium oxide was mixed with 224 grams of ammonium chloride, 16.3 grams of ammonia was produced. What is the percent yield of ammonia in the experiment
Calculate the molarity of a solution made by adding 22.1 mL of concentrated ammonia (28.0 % by mass, density 0.880 g/mL) to some water in a volumetric flask, then adding water to the mark to make ex
Write an equation to show how diethyl malonate can react with sodium ethoxide, Na+OCH2CH33, in an acid-base reaction.
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m. What is the frequency of the sound
What is the work exchanged between the system(gas) and its surroundings. What is the change in internal energy of the gas. What is the change in enthalpy of the gas
The three principal visible spectral lines from hydrogen have wavelengths 434 nm, 486 nm, and 656 nm. Find the angular position of the third spectral line in hydrogen
Can SO2 be maintained a liquid under a pressure of 100atm at 0 C. Can liquid methane be obtained under the same conditions.
You're doing a double-slit experiment with two different colors. What's the wavelength of that color
why is lithium chlorate be a more practical choice for the "chlorate candle" than either sodium or potassium chlorate
Suppose a proton and an alpha particle each have kinetic energy 8.6MeV. Find speed of the alpha particle
What is the pressure of the gas in kPa. The gas is heated by raising the piston by 1.20 m. How much work is performed by the expanding gas
A diffraction grating has 1.5?m spacing. Find the first-order diffraction angles for the following wavelengths. Find the first-order diffraction angles for red light
What is the maximum kinetic energy of a photoelectron ejected from cesium by 555 nm light? Note that if the wavelength of the light used to irradiate the cesium surface becomes longer than 660 nm, n
The Specific Heat of a cooling oil is 1.75 J/g. How much heat energy is neededto raise he temp of 2.72 kg of this oil from 23 C to 191 C.
A plastic bag is filled with helium at atmospheric pressure and 18.0 oC. Assume that the mass of the bag is negligible, what is the required volume of the balloon if the air inside can be maintained a