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Question

The density of liquid gallium at 30oC is 6.95g/mL. Because of its wide liquid range (30oC to 2400oC), gallium could be used as a barometer fluid at high temperature. What height (in cm) of gallium will be supported on a day when the mercury barometer reads 740 torr? (The density of mercury is 13.6g/mL)

A
322
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B
285
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C
165
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D
210
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