## Density Lab B

Dwu1011
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### Density Lab B

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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AwesomeSauceis1
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### Re: Density Lab B

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.

Dwu1011
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### Re: Density Lab B

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.
`Optics,Towers, Wright Stuff`
`Herpetology, Game On, Density Lab`
2019-2020 Events:
Ornithology- 2/2/1/1
Density Lab - 1/2/1/4
ELG - 2/7/1/1
Machines- 4/1/1/0
Mission Possible - 13/15/1/1
Game On - 0/2/2/0
SQB - 0/0/0/0/1
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AwesomeSauceis1
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### Re: Density Lab B

What is the mass of 5.1 moles of carbon dioxide (CO$^2$)?

Dwu1011
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### Re: Density Lab B

AwesomeSauceis1 wrote:
October 16th, 2019, 10:53 am
What is the mass of 5.1 moles of carbon dioxide (CO$^2$)?
`Optics,Towers, Wright Stuff`
`Herpetology, Game On, Density Lab`
2019-2020 Events:
Ornithology- 2/2/1/1
Density Lab - 1/2/1/4
ELG - 2/7/1/1
Machines- 4/1/1/0
Mission Possible - 13/15/1/1
Game On - 0/2/2/0
SQB - 0/0/0/0/1
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AwesomeSauceis1
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### Re: Density Lab B

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$^2$)?

Yep, sorry I forgot to give units/sig figs. Your turn.

AwesomeSauceis1
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### Re: Density Lab B

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)?

theprimegrinder
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### Re: Density Lab B

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

AwesomeSauceis1
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### Re: Density Lab B

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

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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