About the gas equation
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If it is known that P(work)=0.8Mpa (gauge pressure) and the standard atmospheric pressure is calculated as 0.1MPa, according to P(work)/T(work)* Density (work) = P(standard)/T(standard) * Density (in standard), if you want to find the density (in standard), I would like to ask whether P (in standard) and P (in standard) are absolute pressure or gauge pressure. If it is absolute pressure, I know that the absolute pressure P (in standard) = 0.9MPa, then whether the absolute pressure of P (in standard) is brought into the formula as equal to 0.2MPa, and then calculate the density (in standard)? I'm a bit confused, I'd appreciate some detailed advice. I'd be very grateful.
The P mark is of course the standard atmospheric pressure of 0.1MPA