   # Suppose you construct a barometer filled with an oil ( d = 1.25 g/cm 3 ) instead of mercury ( d = 135 g/cm 3 ) in the vertical tube. If the atmosphere has a pressure of 0.95 atm, what is the approximate height of the oil in the tube? (a) 7.2 m (b) 7.8 m (c) 8.3 m ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

#### Solutions

Chapter
Section ### Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
Chapter 10.1, Problem 2RC
Textbook Problem
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## Suppose you construct a barometer filled with an oil (d = 1.25 g/cm3) instead of mercury (d = 135 g/cm3) in the vertical tube. If the atmosphere has a pressure of 0.95 atm, what is the approximate height of the oil in the tube? (a) 7.2 m (b) 7.8 m (c) 8.3 m

Interpretation Introduction

Interpretation:

The approximate height of the oil in the tube should be determined using the given data.

Concept Introduction:

Density of a gas can be find out with the help of ideal gas equation which is

PV=nRT

n in the given equation can be written as mM Since amount of any substance is given by dividing mass with molar mass.

Density, Pressure and Height are related by the equation:

Pressure=ρghρ-densityg-gravitationalconstanth-height

### Explanation of Solution

We know that Pressure=ρgh

Given:

density=1.25g/cm3P=0.95atmg=9.8

Height=Pρg=0.95×1021.25g/cm3×9.8=7

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