Question

A He atom with a mass of 6.65×10−27 kg has a de Broglie wavelength of 4.3×10−12...

A He atom with a mass of 6.65×10−27 kg has a de Broglie wavelength of 4.3×10−12 m. What is the velocity of the He atom, in meters per second?

Use 6.626×10−34kg m2s for Planck's constant.

Your answer should include two significant figures.

Science   Chemistry   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution :

The expression for de Broglie wavelength is given by :

where = de Broglie wavelength = 4.3 10-12 m ; h = Plank's constant = 6.626 10-34 kgm2s ; p = momentum = mv ; m = mass of He atom = 6.65 10-27 kg ; v = Velocity of He atom = To be calculated;

Therefore, velocity of He atom = 2.3 104 m/s

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Calculate the de Broglie wavelength of helium nucleus (mass = 6.64 x 10^-27 kg) moving at...
Calculate the de Broglie wavelength of helium nucleus (mass = 6.64 x 10^-27 kg) moving at a velocity of 2.54 x 10^7 m/s A. 6.57 x 10^-14 m B. 3.96 x 10^-15 m C. 8.68 x 10^-59 m D. 4.55 x 10^8 E. 8.64 x 10^-16
A. The mass of an electron is 9.11×10−31 kg. If the de Broglie wavelength for an...
A. The mass of an electron is 9.11×10−31 kg. If the de Broglie wavelength for an electron in a hydrogen atom is 3.31×10−10 m, how fast is the electron moving relative to the speed of light? The speed of light is 3.00×108 m/s. Calculate your answer as a percentage.The solution was .732% B. The mass of a golf ball is 45.9 g . If it leaves the tee with a speed of 70.0 m/s , what is its corresponding wavelength?...
Louis de Broglie's bold hypothesis assumes that it is possible to assign a wavelength λ to...
Louis de Broglie's bold hypothesis assumes that it is possible to assign a wavelength λ to every particle possessing some momentum p by the relationship λ = h p , where h is Planck's constant ( h = 6.626 × 10 − 34 J ⋅ s ). This applies not only to subatomic particles like electrons, but every particle and object that has a momentum. To help you develop some number sense for de Broglie wavelengths of common, everyday objects,...
Calculate the de Broglie wavelength of (a) a 0.613 keV electron (mass = 9.109 × 10-31...
Calculate the de Broglie wavelength of (a) a 0.613 keV electron (mass = 9.109 × 10-31 kg), (b) a 0.613 keV photon, and (c) a 0.613 keV neutron (mass = 1.675 × 10-27 kg).
Calculate the de Broglie wavelength of (a) a 0.942 keV electron (mass = 9.109 × 10-31...
Calculate the de Broglie wavelength of (a) a 0.942 keV electron (mass = 9.109 × 10-31 kg), (b) a 0.942 keV photon, and (c) a 0.942 keV neutron (mass = 1.675 × 10-27 kg).
Calculate the de Broglie wavelength of (a) a 1.59 keV electron (mass = 9.109 × 10-31...
Calculate the de Broglie wavelength of (a) a 1.59 keV electron (mass = 9.109 × 10-31 kg), (b) a 1.59 keV photon, and (c) a 1.59 keV neutron (mass = 1.675 × 10-27 kg).
What is the de Broglie wavelength of an electron (m = 9.11 × 10^–31 kg) in...
What is the de Broglie wavelength of an electron (m = 9.11 × 10^–31 kg) in a 5.0 × 10^3-volt X-ray tube? a. 0.017 nm b. 0.007 nm c. 0.028 nm d. 0.034 nm e. 0.014 nm
Just as light waves have particle behavior, a moving particle has a wave nature. The faster...
Just as light waves have particle behavior, a moving particle has a wave nature. The faster the particle is moving, the higher its kinetic energy and the shorter its wavelength. The wavelength, λ, of a particle of mass m, and moving at velocity v, is given by the de Broglie relation λ=hmv where h=6.626×10−34 J⋅s is Planck's constant. This formula applies to all objects, regardless of size, but the de Broglie wavelength of macro objects is miniscule compared to their...
Compare the de Broglie wavelength of a 0.015-kg ball moving at 40 m/s to that of...
Compare the de Broglie wavelength of a 0.015-kg ball moving at 40 m/s to that of an electron which has a speed of 0.0073c. Given: mass of electron = 9.11 x 10-31kg, speed of light = c = 3 x 108 m/s.
A relativistic electron has a de Broglie wavelength of 646 fm (1 fm = 10−15 m)....
A relativistic electron has a de Broglie wavelength of 646 fm (1 fm = 10−15 m). 1) Determine its velocity
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT