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# Converting between Units of Pressure and Temperature - convert psi to mph calculator

Converting between Units of Pressure and Temperature (HD)
There are many different units of pressure used in chemistry. This is an unfortunate situation, but we cannot change it. You must be able to use all of them. Here they are:
1. atmospheres (symbol = atm)
2. millimeters of mercury (symbol = mm Hg) now called torr
3. inches of mercury (symbol = in. Hg)
4. pounds per square inch (symbol = psi)
5. kilopascals (symbol = kPa)
Conversions
K = °C + 273
°C = K - 273

1 cm3 = 1 mL
1 L = 1000 mL

1 atm = 760.0 mm Hg = 760.0 torr = 29.92 in. Hg = 14.7 psi = 101.3 kPa
Doing Pressure Conversions
One atm. equals 760.0 mm Hg, so there will be a multiplication or division based on the direction of the change.
Example #1 - Convert 0.875 atm to mmHg.
Solution - multiply the atm value by 760.0 mmHg / atm.
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Notice that the atm values - one in the numerator and one in the denominator - cancel, leaving mmHg.
Example #2 - Convert 745.0 mmHg to atm.
Solution - divide the mmHg value by 760.0 mmHg / atm
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Notice that the mmHg values cancel and the atm, in the denominator of the denominator, moves to the numerator.
ASSIGNMENT: Practice problems!
Convert these to atmospheres:
1. 340 torr
2. 30.53 in Hg
3. 540 mm Hg
4. 21 psi
Convert these to mm Hg:
1. 1.7 atm
2. 9.1 psi
3. 28.59 in. Hg
4. 740 torr
Convert these to torr:
1. 0.8 atm
2. 810 mm Hg
3. 241 kPa
4. 29.92 in. Hg
Convert these to in. Hg:
1. 0.8 atm
2. 810 mm Hg
3. 19.2 psi
4. 29.92 in. Hg
Convert degrees C to Kelvin
1. 23 deg C
2. -100 deg C
3. 450 deg C
4. 200 deg C
Convert Kelvin to degrees C
1. 373 K
2. 0 K
3. 100 K
4. 5000 K

How to convert gallons per hour to Psi? how do you calculate psi from flow rate? to get this, divide the total pressure drop by the pipe length and multiply by 100. in this case, it is 10 divided by 200 times 100, which equals 5 psi. to get the flow, multiply 3.0877 by 5 raised to the power of .5415, which equals 7.38. the flow is 7.38 gpm. Similarly, how many GPM is 60 psi? 2.2 GPM