Question

This is a math based chemistry problem i anyone can help me plzz
A sample of gaseous carbon dioxide was collected by the displacement of water at 228C and 736 torr.
The volume under these conditions was measured to be 25.76 mL. How many moles of carbon
dioxide are in this sample? How many millimoles of carbon dioxide are in this sample?

Answer 1

pv=nrt

Answer 2

iif anyone knows how to do it plz help me

Answer 3

is there really any other kind of chemistry question? :-)

okay, first, you'll want to convert that temperature to be in degrees K, not C. Do you know how?

Answer 4

after you have the temperature converted, solve the ideal gas law for the value of \(n\) in terms of P, V, R, T and plug in the values. Be sure to do any unit conversion you need, and use a value of R that is compatible with your units.

Answer 5

@whpalmer4 I solved it later but forgot to close the question I got my aswer as p.37 X10^-4 mol of co2

Answer 6

or covertign it to millimoles the answer is .937 is that what u get?? I just want someone to double check!

Answer 7

hmm, I get something else, can you show me your work?

Answer 8

sure

Answer 9

pv=nrt
n=pv/rt
p= 736/760 = .968 atm
n= (.968)(.02444)/ (.0821)(295)
n= 9.37X10 ^-4 mol

Answer 10

you didn't convert the temperature to degrees K
and your volume is a bit different than stated in the problem

Answer 11

p=.968
23.44 ml into liters .02344
r=.0821
t= 22+273= 295

Answer 12

so sorry that's a typo the one inn my problem is 23.44 mL

Answer 13

The volume under these conditions was measured to be 25.76 mL

A sample of gaseous carbon dioxide was collected by the displacement of water at 228C and 736 torr.

Answer 14

and 22C sorry I copy and pasted it that's what I get.

Answer 15

A sample of gaseous carbon dioxide was collected by the displacement of water at 22C and 736 torr.
The volume under these conditions was measured to be 23.44 mL. How many moles of carbon
dioxide are in this sample? How many millimoles of carbon dioxide are in this sample?

Answer 16

okay but I am always use to converting C to K so that's what I did for thsi questiontoo

Answer 17

ok, now the answers look a bit more similar :-)

Answer 18

so id my answer right? so sorry about that typo u proabably had to redo it. sorry.

Answer 19

I don't see anything wrong with it...

Answer 20

tysm

Answer 21

okay i have one more question but it's all chemistry

Answer 22

ok

Answer 23

define the "standard state of gases". If gases are usually not at "standard state", why does the phrase exist?

Answer 24

you'll have to rummage around in your textbook or elsewhere for that, sorry

Answer 25

yeah alredy did that idk where that stuff is

Answer 26

wikipedia says

The standard state for a gas is the hypothetical state it would have as a pure substance obeying the ideal gas equation at standard pressure (105 Pa, or 1 bar). No real gas has perfectly ideal behaviour, but this definition of the standard state allows corrections for non-ideality to be made consistently for all the different gases.

Answer 27

thanks