Abbreviation of inches of mercury?

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Multiple Choice

Abbreviation of inches of mercury?

Explanation:
Abbreviation of inches of mercury is inHg. This uses in for inches and Hg for mercury, the element name represented by its symbol. Inches of mercury come from the height of a mercury column that balances atmospheric pressure, a relationship tied to barometer measurements. For reference, 1 atm equals 760 mmHg, which is about 29.92 inHg. Other options correspond to different pressure units: mmHg stands for millimeters of mercury, while psi and kPa are pounds per square inch and kilopascals, respectively.

Abbreviation of inches of mercury is inHg. This uses in for inches and Hg for mercury, the element name represented by its symbol. Inches of mercury come from the height of a mercury column that balances atmospheric pressure, a relationship tied to barometer measurements. For reference, 1 atm equals 760 mmHg, which is about 29.92 inHg. Other options correspond to different pressure units: mmHg stands for millimeters of mercury, while psi and kPa are pounds per square inch and kilopascals, respectively.

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