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Based on hydrogen emission lines (l's) measured in the laboratory, a student plots (1/lambda) vs. (1/n(initial)^2) from which she obtains the following equation: (nm = nanometers) (1/lambda) = [(-0.010968nm^-1)/n(initial)^2] + 0.0012189nm^-1
a) Based on this equation, what is the value of the Rydberg constant (R) in m^-1? (5 significant figures)
b) What is nf?
a photon of ultraviolent lights possesses enough energy to mutate a strand of human dna. what is the energy of a single uv photon and a mole of uv photons having a wavelength of 25 nm
What is the percent by mass of NaHCO3 in a solution containing 60 g of NaHCO3 dissolved in 600 mL of H2O?
a solid with an irregular shape and a mass of 11.33 g is added to a graduated cylinder filled with water
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.
Draw a doagram to show the changes in potential energy that occur from the rotation around the C1-C2 bond of 1-bromopropane
A 1-L flask is filled with 1.45 g of argon at 25^0C. A sample of ethane vapor is added to the same flask until the total pressure is 1.25 atm.what is the partial pressure of argon in the flask?
Hydrazine, N2H4, may react with oxygen to form nitrogen gas and water. N2H2(aq)+O2(g)=arrow=N2(g)+2H2O(l)
solution with a pipet to a second 500.0 mL volumetric flask and diluting to the mark. Find the concentration of Ag+ in the dilute solution.
Calculate the Pickering series wavelength associated with the excited state ni = 9.What region of the electromagnetic spectrum does this transition fall in?
A chemist prepares a sample of hydrogen bromide and finds that it occupies 258 mL at 60 degrees celsisus and 476 Torr. What volume would it occupy at 0 degrees celsisus at the same pressure? Answer in units of mL to 5 decimal places.
what are the ground state electron configuration of the elements in period 2 of this alternate reality?
What is the molar mass of the unknown gas? Express your answer to four significant figures and include the appropriate units.
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