Selina solutions

Selina solutions

Grade 8

Physical Quantities and Measurement | Numericals

Question 10

Q10) From the following observations, calculate 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 = 22g

Mass of bottle + water, M2 = 50g

Mass of bottle + brine solution, M3 = 54g

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

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

Density of brine solution = \frac{Mass\ of\ brine\ solution}{Mass\ of\ water}=\frac{32}{28}=1.14\ g\ cm^{-3}

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Question 10

Q10) From the following observations, calculate 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 = 22g

Mass of bottle + water, M2 = 50g

Mass of bottle + brine solution, M3 = 54g

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

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

Density of brine solution = \frac{Mass\ of\ brine\ solution}{Mass\ of\ water}=\frac{32}{28}=1.14\ g\ cm^{-3}

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subject-cta
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