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An electron in the hydrogen atom makes a transition from an energy state of principle quantum number n to the n=1 state. If the photon emitted has a wavelength of 95nm, what is the value of n?
On this problem I tried using the equation 1/wavelength = R (1/n^2 - 1/n^2)= 1/ (9.5x10^8m) = 1.097x10^7 m^-1 (1/1 - 1/n^2)
pvc processors use a very high molecular weight acrylic processing aid for production of rigid pvc foamsheet of high
starting with an aqueous solution of 75ml of 0.35m naocl kb 2.8x10-7 determine the observed ph of the solution at the
How many grams of lithium are required to completely react with 60.7 mL of N2 gas at STP?
An electron in the n = 7 level of the hydrogen atom relaxes to a lower energy level, emitting light of 397nm. What is the value of n for the level to which the electron relaxed?
Ultra-high-vacuum experiments are routinely performed at a total pressure of 1.0 x 10-10 torr. Calculate the mean free path of N2 molecules and the binary number of collisions, Z11, of N2 molecules (per liter per second) at 350 K under these condi..
So he concluded that entropy of ice must be greater than that the entropy of water liquid at 0 C. do you agree with his conclusion?
Why does clove oil float on the surface of the aqueous distillate rather than sinking to the bottom?
What is the heat of formation of NaOH which molarity is 2.02? If heat of formation of NaON, which molarity is M 1.00, -469.6, is heat of formation
Write a balanced combustion reaction for natural gas composed of 90 mol% methane and 10 mol% ethane. [Fractional moles are convenient for the subsequents calculations. Your reaction should have .90 mol methane and .10 mol ethane on the left side. ..
A gas measures 180.0 mL at 87.0°C and 800.0 mm. Find its volume at standard temperature and 800.0 mm of pressure.
Write the balanced reaction and determine the mass of KNO3 that should be mixed with 6.1 g of sugar to produce optimally balanced rocket candy.
calculate the pH OF 100.0 mL of a bufer that is 0.050 M NH4Cl and 0.110 M NH3 before and after the addition of 1.00 mL of 5.75 M HNO3. before=9.59 after=
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