# From the following observations, calculate the density and relative density of a brine solution. Mass of empty densitybottle = 22 gMass of bottle + water = 50 gMass of bottle + brine solution = 54 g - Physics

Sum

From the following observations, calculate the density and relative density of a brine solution.

Mass of empty density bottle = 22 g

Mass of bottle + water = 50 g

Mass of bottle + brine solution = 54 g

#### Solution

Mass of empty bottle, M1 = 22 g

Mass of bottle + water, M2 = 50 g

Mass of bottle + brine solution, M3 = 54 g

Mass of water = M2 - M1 =50 - 22 = 28 g

Mass of brine solution = M3 - M1 = 54 - 22 = 32 g

∴ Density of brine solution = "Mass of brine solution"/"Mass of water"

= (32 " g")/(28 "cm"^3)

= 1.14 g cm-3

∴ Relative density of brine solution = ("M"_3 - "M"_1)/("M"_2 - "M"_1)

= (54 - 22)/(50 - 22)

= 32/28

= 1.14

Concept: Measurement of Density
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Chapter 2: Physical Quantities and Measurement - Numericals [Page 36]

#### APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 2 Physical Quantities and Measurement
Numericals | Q 10 | Page 36
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