atm or bar
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atm or bar
When do I know to convert between atm or bars when calculating partial gas concentrations?
Re: atm or bar
The ratio of atm to bar is basically 1 to 1; thus, I believe you do not to choose which one is used. You should just use the one given in the problem.
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Re: atm or bar
It depends on what the question is asking for. You may not have to convert, but if you do then it would be when you are given a value with the units atm and have to find the pressure in bar, and vice versa.
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Re: atm or bar
It should be clear in the problem which one you would need to use but the two are very close
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Re: atm or bar
Since the ratio is the same, you can use whichever one. To be safe, just use the one mentioned in the question.
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Re: atm or bar
For the issue of atm vs bar, I believe that the values are of negligible difference. However, I would just use the units given in the question.
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Re: atm or bar
The ratio between atm and bar is the same so you do not need to choose which one to use. Instead, just use the units provided in the question.
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Re: atm or bar
Hi Vanessa, the problem usually would specify in terms of units of atm or bar, but I believe both units are interchangable, since they have a 1:1 conversion ratio. Hope this helps!
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Re: atm or bar
atm and bar are essentially the same thing, so there's no need to worry about the difference
Re: atm or bar
When rounded, atm and bar pretty much have a 1:1 ratio. You will need to utilize/convert to whatever the question is asking for. Hope that helps!
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Re: atm or bar
Furthermore, to add to the discussion, 1 bar is approximately equal to 0.986923 atm. Therefore, you may approximate 1 bar to equal 1 atm.
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Re: atm or bar
Since 1 atm is extremely close to 1 bar, there's no need do any conversions and the units can be used interchangeably.
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Re: atm or bar
Use whatever unit is asked for in the solution. Otherwise just use the original units given. Both measure partial pressure.
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Re: atm or bar
Unless the problem says that a conversion is needed, then it is safe to assume that no conversion needs to be done. If you're given partial pressure in bar or atm stick with either or.
Re: atm or bar
I would just look at the units the problem is asking for in your answer. If it doesn't say anything, I would assume atm, unless the original units are given in bars. Also, as many people on this post have replied, the values are really similar I've noticed so I wouldn't worry too much about it because as long as you are consistent with your calculations, the values shouldn't differ that much. Hope this helps!
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Re: atm or bar
Atm and bar are so close in value, that we can almost use them interchangeably. I would, however, look at the units used in the problem as well as if it requests a certain unit in the answer.
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Re: atm or bar
If atm and bar are equal to each other why are the R values different for the different units? Or can you use the values interchangeably.
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Re: atm or bar
Atm and bar are pretty close in value, so you can use them interchangeably. However, depending on the problem you should use the units within the problem.
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Re: atm or bar
1 atm is around 1 bar so if given in atms and you want your answer to be in bars you don't really have to make any conversions except for changing the name of the units. You should follow the units given in the problem. Hope that helps!
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Re: atm or bar
You don't need to convert between atm and bar because they are relatively the same value, so in this course you consider it to have no difference.
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Re: atm or bar
Hi Lindsey,
You would not need to convert between atm and bars. 1 atm is approximately 1.013 bars. However, when doing a problem that give bars, you can just assume that they are the same since the values are so close. I've done problems where I just assumed bars = atm and the answer still turned out correct.
You would not need to convert between atm and bars. 1 atm is approximately 1.013 bars. However, when doing a problem that give bars, you can just assume that they are the same since the values are so close. I've done problems where I just assumed bars = atm and the answer still turned out correct.
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Re: atm or bar
Atm and bar are actually very close in value, so for our purposes, we do not need to convert between the two; we just keep them the same number.
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Re: atm or bar
The ratios between the two are 1 to 1, so it would be safe just to use the units that are required or given in the question.
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Re: atm or bar
Usually, the problem will distinguish which to use and we likely wont have a problem that asks us to convert the two, since they are so close in value (1 atm = approx 1.013 bar).
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Re: atm or bar
Atm and Bar is essentially the same with around a 1 percent difference. For this class I believe we stick to Atm. Hope this helps!
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