Density Lab B

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Dwu1011
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Density Lab B

Post by Dwu1011 »

Let's get this marathon started!

What is the concentration in ppm of selenium if 1.3 milligrams is found in 2500 kg of soil?
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Re: Density Lab B

Post by AwesomeSauceis1 »

Dwu1011 wrote: ↑September 25th, 2019, 1:49 pm What is the concentration in ppm of selenium if 1.3 milligrams is found in 2500 kg of soil?

I'm going to guess that it's 0.00052 ppm.
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Re: Density Lab B

Post by Dwu1011 »

AwesomeSauceis1 wrote: ↑October 15th, 2019, 8:55 am
Dwu1011 wrote: ↑September 25th, 2019, 1:49 pm What is the concentration in ppm of selenium if 1.3 milligrams is found in 2500 kg of soil?

I'm going to guess that it's 0.00052 ppm.
Correct! Now you ask a question.
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Re: Density Lab B

Post by AwesomeSauceis1 »

What is the mass of 5.1 moles of carbon dioxide (CO)?
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Re: Density Lab B

Post by Dwu1011 »

AwesomeSauceis1 wrote: ↑October 16th, 2019, 10:53 am What is the mass of 5.1 moles of carbon dioxide (CO)?
Is the answer 224.451
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Re: Density Lab B

Post by AwesomeSauceis1 »

Dwu1011 wrote: ↑October 16th, 2019, 4:49 pm
AwesomeSauceis1 wrote: ↑October 16th, 2019, 10:53 am What is the mass of 5.1 moles of carbon dioxide (CO)?
Is the answer 224.451

Yep, sorry I forgot to give units/sig figs. Your turn.
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Re: Density Lab B

Post by AwesomeSauceis1 »

And I'll just go again, um...

A gas at STP is heated to 57 C, and its container shrinks from 8 L to 5.5 L. What is the new pressure of the gas in kPa (to the nearest tenth)?
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Re: Density Lab B

Post by theprimegrinder »

I have an invitational in 1 wk, and I need problems, so I'll answer. Is it 182.4 kPa?
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Re: Density Lab B

Post by AwesomeSauceis1 »

theprimegrinder wrote: ↑January 12th, 2020, 1:46 pm I have an invitational in 1 wk, and I need problems, so I'll answer. Is it 182.4 kPa?
Close, but incorrect. Probably a calculation error or something.

Someone else do a problem, I'm too lazy
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Re: Density Lab B

Post by theprimegrinder »

Ok...this one isn't in the rules, but something useful to know

Please describe the 5 postulates of the Kinetic-Molecular Theory
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