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The pressure inside a steam sterilizer operating at 270 degrees Fahrenheit is about:

A. 6 PSIG
B. 15 PSIG
C. 28 PSIG
D. 44 PSIG

Answer :

Final answer:

The pressure inside a steam sterilizer operating at 270 degrees Fahrenheit is most likely around 28 PSIG, as standard autoclave operations at 121°C (250°F) use pressures of 15 to 20 PSI.

Explanation:

The pressure inside a steam sterilizer operating at 270 degrees Fahrenheit is 27 PSIG. Standard operating procedures for autoclaves, which are similar to steam sterilizers, use temperatures of either 121 °C or sometimes 132 °C at a pressure of 15 to 20 pounds per square inch (psi). When referring to Figure 1.35, it's evident that autoclaves commonly use steam heated to 121°C (250°F), at 103 kPa (15 psi) above atmospheric pressure. Given the correlation of steam pressure to temperature, and considering that in specialized literature steam at 20 pounds of pressure corresponds to a temperature of 228°, it's reasonable to deduce that at 270°F, which is above 250°F but below 228°C, the pressure would be somewhat higher than 15 psi but lower than that at 228°C (20 psi).

Hence, among the given options, the closest approximation would be (option C) 28 PSIG.

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