# The value of the diameter and the density are 9.5 μm and 1.06 g cm − 3 respectively in a particular batch of polystyrene microspheres. The setting velocity of particles in 1G gravitational field at 20 ° C and the time required to 10 mm sediment of particlesis to be determined. The water density is ρ F = 0.998 g cm − 3 . Concept introduction: The following formula will be used for the calculation of the settling velocity- u = ( ρ − ρ F ) g 18 η d 2 …… (1) Here, u = velocity of particle ρ = density of particle ρ F = density of fluid η = viscosity of the medium d = diameter of the particle g = acceleration due to gravity Also, t = h u Here, h = sedimentation distance u = velocity of the particle t = time ### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213 ### Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

#### Solutions

Chapter 34, Problem 34.12QAP
Interpretation Introduction

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