Answer:
Option C is the correct answer.
Explanation:
Absolute pressure is sum of gauge pressure and atmospheric pressure.
That is
![P_{abs}=P_{gauge}+P_{atm}](https://tex.z-dn.net/?f=P_%7Babs%7D%3DP_%7Bgauge%7D%2BP_%7Batm%7D)
We have
![P_{abs}=550.280 kPa\\\\P_{atm}=1atm=101325Pa=101.325kPa](https://tex.z-dn.net/?f=P_%7Babs%7D%3D550.280%20kPa%5C%5C%5C%5CP_%7Batm%7D%3D1atm%3D101325Pa%3D101.325kPa)
Substituting
![P_{abs}=P_{gauge}+P_{atm}\\\\550.280=P_{gauge}+101.325\\\\P_{gauge}=448.955kPa](https://tex.z-dn.net/?f=P_%7Babs%7D%3DP_%7Bgauge%7D%2BP_%7Batm%7D%5C%5C%5C%5C550.280%3DP_%7Bgauge%7D%2B101.325%5C%5C%5C%5CP_%7Bgauge%7D%3D448.955kPa)
Option C is the correct answer.
Noble gases are not highly reactive
What is he minumum coating of thickness needed to ensure that lifght of waveelntght 5660 mbnd si
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