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How many grams of oxygen are in 5.89×1023 formula units of (NH4)2SO4?
Express your answer to three significant figures and include the appropriate units.
The pressure was exerted with a piston on molten naphthalene at 95 degrees C. The vapor pressure of naphthalene under 1.0bar is 2.0kPa and its density is 0.962g/cm^3. What is its vapor pressure when the pressure on the liquid is 15MPa
In the laboratory we may prepare a sodium hydroxide solution by dissolving 2.0 grams of sodium hydroxide into enough DI water to give a total volume of 500ml. What are the [OH-], the [H3O+] and the pH of the resulting solution?
Provides as many reasonable ways as possible of synthesizing 2-choloro-3-methylbutane as the major substrate product starting with substrates that contain 3 or more carbon atoms
When steam (hot water) is passed over iron, hydrogen gas and iron (3) oxide are formed. What weight of steam would be needed to react completely with 100.0g of iron.
A weak monoprotic acid is exactly neutralized by 11.17mL of a standardized 0.1455M NaOH solution. If the Ka of the acid is 0.00084, what is the pH at the half-equivalence point.
Ionization involves completely removing an electron from an atom. What wavelength of light contains enough energy in a single photon to ionize a hydrogen atom
How could you isolate the R-(+)-alpha-phenylethylamine from the mother liquor that remained after you crystallized and filtered off the S-(-)-alpha-phenylethylamine
sodium hydroxide has a lattice energy of -887 and a heat of hydration of -932 . how much solution could be heated to
How many 2p atomic orbitals from boron must be mixed with a 2s atomic orbital to yield the bonding hybrid atomic orbitals in BF3. WHY
a) what is the concentration of the dye in a solution with a percent transmittance reading of 45.8% at 640 nm b) if the solution in part a was made by taking 20.00 mL of a stock solution and diluting it to 100.00 mL, what is the concentration of ..
A 0.451 M solution of a weak acid, HA, has a pH of 4.01. Calculate Ka for the acid. Use E notation and 3 significant figures.
The visible spectrum part of metal atom bright line spectra is used to produce the colors seen in fireworks. The atoms are excited by the explosion and then emit their characteristic color. Complete the table by using an equation to calculate the fre..
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