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Old Aug 30th 2018, 12:05 PM   #1
jeffd887
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Question conversion question

What is the conversion of in Hg to torr? If it helps, the problem this conversion comes from is as follows (summarized):


barometric pressure is 30.45 in. Hg. (a) convert this pressure to torr. (b) convert this pressure to atm.



The conversions the book gives in regards to pressure are as follows:


1 pa = 1 N/m^2
= 1 kg/m-s^2


1 atm = 1.01325 x 10^5 pa
= 760 torr
=14.70 lb/in^2


1 bar = 10^5 pa


1 torr = 1 mm Hg


Just not sure how to convert inches into any of these things? Thanks in advance.
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Old Aug 31st 2018, 05:54 PM   #2
ChemIsMyJam
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Convert inHg to mmHg

When you're given inHg (inches of mercury), you can convert that to mmHg (millimeters of mercury) as you would a length.

1 inch=2.54 cm=25.4 mm

The units for mmHg and inHg are basically measuring how high mercury would go up in a barometer.

Once you get to mmHg you can use one of the conversions that you listed.

Hope this helps!

Rebecca
https://www.chemistryismyjam.com
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