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One kind of electromagnetic radiation has a frequency of 107.1 MHz another kind has a wavelength of 2.12 * 10-10 m as well as yet another type of electromagnetic radiation has photons with energy equal to 3.97 * 10-19 J/photon. Identify each kind of electromagnetic radiation as well as place them in order of increasing photon energy and increasing frequency.
Using the bond energies below determine the value and sign of delta H
All particles in the mixture have a uniform spherical radius of 0.072 mm. a) Calculate the mass of a single particle of Na2SO4 and the number of Na2SO4 particles in the mixture.
Alcohols can be dehydrated to alkenes with sulfuric acid and alkenes can be used to prepare alcohols using sulfuric acid detail both mechanisms and explain the differences
Starting with needed alkanes, alkenes and inorganic regrets, devise syntheses for the following compounds. Yout method should produce each compound in good yield and free of isomers.
The atomic mass of element X is 22.99 amu. A 19.98-g sample of X combines with 16.51 g of another element Y to form a compound XY. Calculate the atomic mass of Y.
nknown gas effuses in 11.0 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.56 min. What is the molar mass of the unknown gas
What weight of sodium carbonate (Na2CO3) and sodium bicarbonate (NaHCO3) are required to make 500 mL of 0.2 M buffer, pH 10.70 (pK1 of H2CO3 is 6.10; pK2 = 10.30)
a flask holds 100ml. when empty is mass is 125.54g. when filled with a solution of potassium bromide the mass of the
How many kilograms of sodium fluoride would be needed to treat an 8.25x10^7 gal reservior?
Utilizing a periodic table arrange the subsequent substances according to their expected lattice energies listing them from lowest lattice energy to the highest- MgS, KI, GaN, LiBr. Use the appropriate symbol to separate substances in the list.
a saturated solution of copper(I) chloride, CuCl, has [Cu^+]=1.1x10^-3 M and [Cl^-]=1.1x10^3 M. what is the value of Ksp for CuCl
The following questions pertain to the magnitude of the x-component of the speed(absolute value of the velocity) cx=|vx| of atoms in a gas, whose probability distriubution has the form P(cx)= ae^-bc2/x. Write down the integral you would need to eva..
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