Week 2,3,4 Achieve HW Question 17

[Nimisha_Seshadri_3C]

The average speed of a diatomic chlorine molecule at 25 ∘C is 323.9 m⋅s−1 . What is the average wavelength of a chlorine molecule at this temperature? Assume that the molecule acts as a single particle.

[Jayden Arevalo 2B]

To solve this problem, you simply use the De Broglie equation, wavelength = h/(mass*velocity), the speed of the chlorine molecule is its velocity, then just find the mass of a diatomic chlorine molecule.

[Mrinalini Mishra 2L]

The above post is right! Make sure you get the mass of the chlorine molecule in kg/particle (SI units!) vs g/mol like periodic tables help you calculate.

[Alyssa Ly 2G]

Hi!

For this problem, you can use the equation: wavelength = h/(mv).

First, you would find the mass of the diatomic chlorine molecule. To do this, you can take the molar mass of Cl2 and then divide it by Avogadro's number. It is very important that you convert the units from grams/atom to kilograms/atom before you plug the values into the equation.

Next, the average speed given can be plugged into the equation as the velocity. With this, you will be able to find the average wavelength of the chlorine molecule!

Hope this helped ! :)