Friday

March 27, 2015

March 27, 2015

Posted by **Hannah** on Friday, January 13, 2012 at 10:44pm.

He, Cl2, Xe, O2, NO2

I used the root mean squared formula but I think I did it wrong. I got Xe as my answer. Is this correct?

- Chemistry -
**DrBob222**, Friday, January 13, 2012 at 11:00pmFrom u = sqrt(3RT/M), the largest M will give you the smallest u. The smallest M will give you the largest u.

- Chemistry -
**Hannah**, Friday, January 13, 2012 at 11:12pmWhat is RT?

So for He I would do square root 3 times (value of RT) / 1.0079 correct?

- Chemistry -
**DrBob222**, Friday, January 13, 2012 at 11:16pmR is 8.314

T is temperature.

However, you are asked only for the greatest, not a value. You don't need R or T.

- Chemistry -
**Hannah**, Saturday, January 14, 2012 at 12:40amso I just have to compare the molar mass of each gas and the smallest is the greatest?

- Chemistry -
**DrBob222**, Saturday, January 14, 2012 at 1:46amYes, if the root mean squared velocity is what you are looking for.

**Answer this Question**

**Related Questions**

Chemistry - Which molecule below has the greatest average velocity at 100 ...

Chemistry - Which molecule below has the greatest average velocity at 100 ...

chemistry - Is average speed (u) the same as root mean square velocity? I found ...

chemistry - Which of the following equations correctly describes the ...

science - Which of the following equations correctly describes the relationship ...

chemistry - why is the molecular formula of oide of arsenic in its gaseous state...

AP Physics - I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were zeros ...

Chemistry URGENT - can someone please tell me what formula's to use for the 2 ...

Chemistry - Consider the reaction for the production of NO2 from NO: 2 NO(g) + ...

Physics PLEASE - I'm trying to derive the formula v^2 = v0^2 + 2a(x-x0) were ...