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An excited hydrogen atom emits light with a frequency of 1.14x10^14 Hz to reach the energy level for which n=4. In what principle quantum level did the electron begin?
Which type of mutation is expressed when a DNA sequence changes from GGA TCA CCG GAA
At equilibrium the pressure of NH3 (g) is 1.23 atm. NH4Cl (s) ---> NH3 (g) + HCl (g) Find the equilibrium constant Ka for the reaction
Hydrazine, N2H4, is used as a rocket fuel. In the reaction below, if 80.1 g of N2H4 and 92.0 g of N2O4 are allowed to react, which is the limiting reactant?
if a bottle of nail polish remover contains 172 of acetonehow much heat would be released by its complete combustion?
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.
what is the volume of a block with the dimensions 95.6cm in length, 43.7cm wide, and 10.2cm in height?
A sample of an unknown gas effuses in 10.1 min. An equal volume of H2 in the same apparatus under the same conditions effuses in 2.16 min. What is the molar mass of the unknown gas
Determine the pH change when 0.092 mol NaOH is added to 1.00 L of a buffer solution that is 0.457 M in HNO2 and 0.356 M in NO2-.
The Vehicle Assembly Building at the Kennedy Space Center in Florida has a volume of 3,666,500 m^3. Convert this volume to liters and express the result in standard exponential notation.
Calculate the P-Cl bond energy, given the following reaction and the average bond dissociation energy of chlorine as 240kJ/mole.
Assuming that the total pressure of the gases is 1.52 and that their mole ratio is 94 : 4.0 : 1.5 : 0.50, calculate the partial pressure (in atmospheres) of each gas.
Specific compounds are named in the boxes below and the functional group part of the name is in boldface. For each boldface functional group, draw an expanded structural formula.
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