Suppose you were to construct a barometer using a fluid with a density of 1.22 g/mL. How high would the liquid level be in this barometer if the atmospheric pressure was 755 torr? (Mercury has a density of 13.6 g/mL.)

The liquid in this barometer would be 8416.393 milimeters.

Explanation:

Since hydrostatic pressure is directly proportional to fluid density (), measured in grams per mililiter, and height of fluid (), measured in milimeters.   Two barometers with distinct fluids are equivalent when both have the same hydrostatic pressure. Then, we construct the following relationship:

(1)

Where:

, - Densities of fluid and mercury, measured in grams per mililiter.

, - Heights of fluid and mercury columns, measured in milimeters.

If we know that , and , then the liquid level of this barometer is:

The liquid in this barometer would be 8416.393 milimeters.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72