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Solution: An open-ended mercury manometer is used to measure the press...

Question

An open-ended mercury manometer is used to measure the pressure exerted by a trapped gas as shown in the figure. Atmospheric pressure is 749 mmHg. What is the pressure of the trapped gas?

a) 292 mmHg

b) 457 mmHg

c) 749 mmHg

d) 1041 mmHg