Calculating the wavelength
Calculate the wavelength, in nanometers, of the light emitted by a hydrogen atom when its electron falls from the n=7 to the n=4 principal energy leve.
a. 4.45 * 10^-20nm
b. 2.17 * 10^-6nm
c. 9.17 * 10^-20 nm
d. 1.38 * 10^14 nm
e. 2.17 * 10^3 nm
Now Priced at $5 (50% Discount)
Recommended (91%)
Rated (4.3/5)
On a cool, rainy day, the barometric pressure is 730mmHg. Calculate the barometric pressure in centimeters of water (cmH2O). Density of Hg = 13.5g/ml; density of water = 1.00g/ml.
Calculate the energy of a photon of blue light that has a wavelength of 432 nm.
A block of dry ice whose mass is 24.4 g sublimes in a room whose temperature is 26.5 oC. What is the entropy change (ΔS) of the CO2?
In an electron microscope, electrons are accelerated to great velocities. Calculate the wavelength, in m, of an electron traveling with a velocity of 7.0 megameters per second. The mass of an electron is 9.1 * 10^-28 g?
Compute the break-even point in dollars for 2012. <-- I got this $2,800,000 2.Compute the break-even point in dollars under each of the alternative courses of action.
If a 1.223 g sample of aluminum metal is heated in a chlorine gas atmosphere, the mass of aluminum chloride produced is 6.043 g. Calculate the empirical formula of aluminum chloride.
Liquid nitrogen has a density of 0.808 g/mL at -196 C. If 440.0 mL of LN2 is injected into a weather balloon to inflate it, what is the final volume of the balloon at 0.96 bar and 20 C?
A 0.035 M solution of a monoprotic acid is 13 percent ionized. Calculate the ionization constant of the acid.
1922828
Questions Asked
3,689
Active Tutors
1421195
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
A spider takes advantage of the shape of tree limbs to build a web. The tree is neither negatively nor positively impacted.
A certain animal lives in the shallow ocean water, just off the coast. It spends its whole time drifting along in the current, where it can use
The transgenic camelina plants offer several advantages: camelina has a relatively short life cycle and good resilience to abiotic stress,
Question: The plasma membrane evagination and subsequent bulk movement of of substances out of the cell is called?
The knowledge gained from studying transgenic Strongyloides species can be pivotal in finding novel targets for anti-parasitic treatments.
There are many advantages to having a transgenic Strongyloides species. This is a great model organism because it is very easy to culture
Describe the five common steps of a signal-transduction cascade and explain how each contributes to the specificity and amplification of cellular responses