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A local radio station can be tuned in by dialing your radio to a frequency of 101.5 MHz. Calculate the energy of the wave.
a. 6.73 x 10-32 Jb. 6.53 x 10-42 Jc. 6.73 x 10-26 Jd. 6.73 x 10-29 J
the one in this module was performed to determine the solubility and the solubility product constant of Gallic acid
A buffer is formed by mixing 100 mL of 0.1 M NH4Cl with 50 mL of 0.3 M NH3. To this solution 12 mL of 0.1 M NaOH is added. What is the approximate pH of the new solution after neutralization? Assume a Kb of 1.8 × 10^-5 for the weak base.
if the freezing point of a .106 m CH3COOH solution is -.288 degrees celsius, calculate the percent of the acid that has undergone ionization?
How many grams of NaN3 are required to produce 340 L of nitrogen gas if the gas has a density of 1.25 g/L?
Calculate the number of moles of quicklime, CaO, that would be produced by the decomposition of 30.0 moles of limestone, CaCO3, in the following reaction.
How many mL of .360M HNO3 are needed to neutralize a 22.5mL sample of .240M KOH.
Compute the value of ΔH ° if the combustion products are CO2 (g) and H2O (g). it isgiven that: CO 2 (g) = ΔHf ° - 393.5 kJmol-1; H 2 O (l) = ΔHf ° -285.8 kJmol-1; H 2 O (g) = ΔHf ° -241.8 kJmol -1.
What mass (in grams)of KNO3 would have to be decomposed to produce 27.1 L of oxygen measured at STP?
A gas sample has an original volume of 680 ml when collected at 720 mm and 28°C. What will be the volume of the gas sample if the pressure increases to 820 mm and the temperature increases to 55°C?
Total pressure in kPa 10 seconds after initiation of the reaction if initially there was 88.3kPa of pure N 2 O 5 vapor Enter the total pressure in kPa 10 minutes after initiation of the reaction.
Determine an apparent radius of the tungsten (VI) ion assuming the oxide ion radius is 1.40A. Suggest a reason that the calculation might give a result that has no physical significance.
When heated, ammonium carbonate decomposes as follows. NH4CO2NH2(s) ->2 NH3(g) + CO2(g) At a certain temperature the equilibrium pressure of the system is 0.318 atm. Calculate KP for the reaction.
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