A Container Has a Vertical Tube, Whose Inner Radius Is $900 \mathrm {~kg} / \mathrm { m } ^ { 3 }$

question 63

Multiple Choice

A container has a vertical tube, whose inner radius is 20.00 mm, connected to it at its side, as shown in the figure. An unknown liquid reaches level A in the container and level B in the tube -level A being 5.0 cm higher than level B. The liquid supports a 20-cm high column of oil, between levels B and C , whose density is $900 \mathrm {~kg} / \mathrm { m } ^ { 3 }$
The density of the unknown liquid is closest to

• A) \(3600 \mathrm {~kg} / \mathrm { m } ^ { 3 }\)
• B) \(3900 \mathrm {~kg} / \mathrm { m } ^ { 3 }\)
• C) \(3100 \mathrm {~kg} / \mathrm { m } ^ { 3 }\)
• D) \(3300 \mathrm {~kg} / \mathrm { m } ^ { 3 }\)
• E) \(2800 \mathrm {~kg} / \mathrm { m } ^ { 3 }\)

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Definitions:

HBr

Hydrobromic acid, a strong acid used in organic synthesis, notably for the addition of bromine across double bonds in alkenes.

KMnO4

Potassium permanganate, a strong oxidizing agent used in various chemical reactions, including organic synthesis and analytical chemistry.

Na2Cr2O7

Sodium dichromate is an inorganic compound consisting of sodium, chromium, and oxygen, used as an oxidizing agent in various chemical reactions, including those in organic chemistry.

Fatty Acid

A type of carboxylic acid that is often found in lipids, characterized by a long hydrocarbon chain which can be saturated or unsaturated.