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Question
Which of these is defined as “Standard Pressure”?
Which of these is defined as “Standard Pressure”?
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Solution
The correct option is D all the above
Standard temperature and pressure, abbreviated STP, refers to nominal conditions in the atmosphere at sea level. Standard pressure supports 760 millimeters in a mercurial barometer (760 mmHg) or 760 torr. This is about 29.9 inches of mercury, and represents approximately 14.7 pounds per inch (14.7 lb/in2). Imagine a column of air measuring one inch square, extending straight up into space beyond the atmosphere. The air in such a column would weigh about 14.7 pounds.
Standard temperature and pressure, abbreviated STP, refers to nominal conditions in the atmosphere at sea level. Standard pressure supports 760 millimeters in a mercurial barometer (760 mmHg) or 760 torr. This is about 29.9 inches of mercury, and represents approximately 14.7 pounds per inch (14.7 lb/in2). Imagine a column of air measuring one inch square, extending straight up into space beyond the atmosphere. The air in such a column would weigh about 14.7 pounds.
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