Tuesday
May 21, 2013

# Posts by Lance

Total # Posts: 213

Chemistry
is it V=h/m x wavelength

Chemistry
So the solution to the problem is v= wavelength x h/m?

Chemistry
At what speed must a neutron travel to have a wavelength of 9.2 pm?

Chemistry

Chemistry
What is the energy of a photon corresponding to radio waves of frequency 1.475 106 /s? I got 9.77e-28 as an answer and its wrong so what is wrong with my calculations.

Chemistry
At what speed must an electron travel to have a wavelength of 13.6 pm? I got 9.89x10^-15 as the answer and its wrong where did I mess up in my calculations?

Chemistry
What is the wavelength of the electromagnetic radiation emitted from a hydrogen atom when the electron undergoes the transition n = 5 to n = 3?(http://www.webassign.net/ebgam9/7-figure-05.gif) is a spectrum m In what region of the spectrum does the line occur? near ultraviolet...

Chemistry
Any object, be it a space satellite or a molecule, must attain an initial upward velocity of at least 11.2 km/s in order to escape the gravitational attraction of the earth. What would be the kinetic energy in joules of a satellite weighing 2337 lb that has the speed equal to ...

Chemistry
A sample of ethanol, C2H5OH, weighing 2.84 g was burned in an excess of oxygen in a bomb calorimeter. The temperature of the calorimeter rose from 25.00°C to 33.73°C. If the heat capacity of the calorimeter and contents was 9.63 kJ/°C, what is the value of q for bu...

Chemistry
The specific heat of copper metal was determined by putting a piece of the metal weighing 39.4 g in hot water. The quantity of heat absorbed by the metal was calculated to be 47 J from the temperature drop of the water. What was the specific heat of the metal if the temperatur...

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