Dino Nuggets Problem 6a

$\lambda=\frac{h}{p}$

Shail Avasthi 2C
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

Dino Nuggets Problem 6a

(Problem: A new element GarBreadium is discovered to have molar mass 3.157 g∙mol-1. The GarBreadium atom travels at an average speed of 1.35x103 m∙s-1 at room temperature. What is the average wavelength of the GarBreadium atom at room temperature?)

My answer for this problem comes out to 9.36x10^-14 m, but the answer key says the answer is 9.36x10^-11 m. I'm using p=mv and λ=h/p to solve this problem. I can't see why my power of 10 is wrong. Can anyone explain?

Shail Avasthi 2C
Posts: 101
Joined: Fri Aug 30, 2019 12:17 am

Re: Dino Nuggets Problem 6a

Actually I figured it out, but I'm going to keep this here in case anyone else is confused. The power of 10 is off by 3 because I forgot to convert grams to kilograms...

san_2F
Posts: 118
Joined: Sat Jul 20, 2019 12:15 am

Re: Dino Nuggets Problem 6a

I would go back through your calculations and make sure that your units are what they are supposed to be. For example, make sure you're converting grams to kilograms since some of the units are in kg. Also make sure you are finding unit per atom when they give it to you in unit per mole.