Answered: 1. The time required for peanut oil to…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter19: Temperature, Thermal Expansion And Gas Laws

Section: Chapter Questions

Problem 32PQ

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1. The time required for peanut oil to flow between the two marks on the Ostwald pipette was 2,400 sec and 120 sec for water at 25°C. The ρ of peanut oil is 2.5 and that of water is 0.997. The η of water is 0.8904 cp at this temperature. What is the kinematic viscosity of peanut oil?

a. 0.04 cstokes

b. 17.86 cstokes

c. 2.84 cstokes

d. None of the choices

e. 22.33 cstokes

2. Calculate the amount of sodium chloride to be added in a 100 mL solution of 1% drug solution with L iso value of 2.2 ˚C/M. MW = 216.32 g/mol using Freezing point depression method.

a. 1.45 g

b. 0.73 g

c. 0.88 g

d. 1.77 g

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