Homework Help: Chemistry

Posted by Casey on Sunday, July 11, 2010 at 1:26pm.

What is the de Broglie wavelength, in meters, associated with a proton. (mass = 1.673 x 10^-24g) accelerated to a velocity of 4.5 x 10^7 m/s? I tried dividing the mass by the velocity. I also multiplied the mass times the velocity, and neither answer came out correctly.

The final answer is 8.8 x 10^-15. My calculater does not allow me to type in figures after 8 decimal points so I am unable to figure out what I am doing wrong.

Chemistry - DrBob222, Sunday, July 11, 2010 at 1:49pm
wavelength = h/mv
h is Planck's constant in Joule-sec.
m is mass in KILOGRAMS (not grams).
v is velocity in m/s.
8.8 x 10^-15 meters is the right answer.
Chemistry - kk, Tuesday, January 18, 2011 at 7:19pm
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