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Chemistry 9 Online
OpenStudy (anonymous):

If the average speed of a helium atom at a certain temperature is 1230. m/s, what is the speed in miles per hour? (1mi =1609m)

OpenStudy (rushwr):

You just have to convert the units !

OpenStudy (anonymous):

I need help setting up the problem, please.

OpenStudy (rushwr):

okai ! The helium atom goes 1230m in 1 s right/ We have to find it in miles per hour !

OpenStudy (anonymous):

right

OpenStudy (rushwr):

\[speed = Distance / time \]

OpenStudy (rushwr):

Now we have to convert the units if 1 mile= 1609m 1230m would be equal to 1230/ 1609 miles right?

OpenStudy (anonymous):

yes

OpenStudy (rushwr):

So what do u get for miles >

OpenStudy (anonymous):

Okay. I think I got it. So (1230m/1s) x (3600s/1h) x (1mi/1609m) = 2.752 x 10^3 mi/h

OpenStudy (anonymous):

Is that right?

OpenStudy (rushwr):

nop

OpenStudy (anonymous):

What did I do wrong then?

OpenStudy (rushwr):

U have to divide the distance by hours ! You have multiplied them !

OpenStudy (anonymous):

Oh. I did.

OpenStudy (anonymous):

I'm not really good at drawing it out on here. Sorry.

OpenStudy (rushwr):

It's okai !

OpenStudy (anonymous):

Thanks for helping me out!

OpenStudy (anonymous):

The program took my answer.

OpenStudy (rushwr):

yeah it is 2.12 x 10^-4 around ! Just calculate and see i ddnt go thru it muchl.

OpenStudy (anonymous):

Alright. Thanks!

OpenStudy (rushwr):

Anytym :)

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