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In regards to Ideal gas Law / gas constant...

would the statements below be true?

The Ideal Gas Law requires that temperature and pressure be converted to absolute values.
The Ideal Gas Constant R value is: R = 8.3144621(75) J / mol K or
R = 10.73 ft^3 psi / R lbmol

Using ideal gas constant R, ft^3 psi / R lbmol, temperature should be in Rankine(R). Rankine is equal to the temperature in Fahrenheit plus 460. It's also worth noting that mass is measured in pounds mol.

Actually 1 rankine = -458.67 degrees Fahrenheit. If you are going to be concerned about the uncertainty, the 75 in parentheses they you need to use the exact value of converting Rankine to Fahrenheit temperature. You should also use the Imperial units to the same level of specificity - 10.73159(2)

Also I am assuming that you are asking about the statement -
The Ideal Gas Law requires that temperature and pressure be converted to absolute values.

That statement is basically true. It is describes how gas behaves with regard to absolute press and the temperature scales relative to absolute zero. Remember that if you are talking about per degree in either the Rankine or Kelvin scales the size of each degree is the same as for Fahrenheit and Celsius respectively.

Niel Leon
engineering.com

PS what are you trying to calculate?