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Chapter 1: Q8E (page 391)

Black smokers are hot volcanic vents that emit smoke deep in the ocean floor. Many of them teem with exotic creatures, and some biologists think that life on earth may have begun around such vents. The vents range in depth from about 1500 m to 3200 m below the surface. What is the gauge pressure at a 3200-m deep vent, assuming that the density of water does not vary? Express your answer in Pascal and atmospheres.

Short Answer

Expert verified

Density of water, in Pa =3.23×107Pa

Density of water ,in atm = 320atm

Step by step solution

01

 Step 1: Identification of given value

Lower depth of vent from surface = 1500 m

Upper depth of vent from surface = 3200 m

02

Concept of density

Density is a measure of how densely or loosely a particular material is packed into a given volume.

It is directly proportional to mass and inversely proportional to volume of object.

ρ=mV

03

Determination of density of water in Pa

Pgauge=h×ρ×g=3200m×1030kg/m3×9.81m/s2=3.23×1017Pa

04

Determination of density of water in atm

Pgauge=3.23×107Pa×1latm1.01×105Pa=320.13atm

Thus, density of water in Pa = 3.23×107Pa

Density of water in atm = 320atm

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