Question

How many millimeters of mercury are in 34 pounds per square inch?1,800 mmHg1,700 mmHg2,000 mmHg1,600 mmHg

Answer 1

1) Convert pounds per square inch (psi) to millimeters of mercury (mmHg).

760 mmHg = 14.7 psi

$mmHg=34\text{ }psi*\frac{760\text{ }mmHg}{14.7\text{ }psi}$$mmHg=1757.82\text{ }mmHg$

2) Rounding the result.

Since 34 has two significant figures the result must have two significant figures.

34 psi are 1800 mmHg.

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