Q8P Pentane (C5H12)聽is a liquid wit... [FREE SOLUTION]

Chapter 2: Q8P (page 44)

Pentane $(C_{5} H_{12})$ is a liquid with a density of 0.626 g/mL near
258C. Find the true mass of pentane when the mass in air is 14.82 g.
Assume air density 0.001 2gm/L.

Short Answer

Expert verified

The true mass of pentane when the mass in the air is 14.82 g is $C_{5} H_{12} = 14.79 g$ .

Step by step solution

Defining the formula for determining the true mass

Buoyancy error: It occurs when the density of the object being weighed is not equal to the density of the standard mass.

$m = \frac{m' (1 - \frac{d_{a}}{d_{w}})}{(1 - \frac{d_{a}}{d})}$

Here,

$d_{a}$ is the density of air,

$d_{w}$ is the density of the calibration weights, and

d is the density of the object being weighed.

Step 2: Calculating the total density of pentane

Given:

The density of $C_{5} H_{12} = 0.626 g / m L$ .

Air density $= 0.0012 g / m L$ .

The mass of pentane in air =14.82g .

The total density $= 0.626 g / m L + 0.0012 g / m L$ .

The total density $= 0.6272 g / mL$ .

Step 3: Calculating the volume of pentane

$Volume = \frac{mass}{density} Volume " = \frac{14.82 g}{0.6272 g / mL} Volume = 23.63 mL$ .

Calculation of the true mass:

The true mass of $C_{5} H_{12} =$ volume density.

The true mass of $C_{5} H_{12} = 23.63 mL 脳 0.626 g / mL$ .

The true mass of $C_{5} H_{12} = 14.79 g$ .

Thus, the true mass of pentane under the given condition is $C_{5} H_{12} = 14.79 g$ .

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91影视

Pentane $(C_{5} H_{12})$ is a liquid with a density of 0.626 g/mL near
258C. Find the true mass of pentane when the mass in air is 14.82 g.
Assume air density 0.001 2gm/L.

Short Answer

Step by step solution

Defining the formula for determining the true mass

Step 2: Calculating the total density of pentane

Step 3: Calculating the volume of pentane

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91影视

Pentane (C5H12)is a liquid with a density of 0.626 g/mL near258C. Find the true mass of pentane when the mass in air is 14.82 g.Assume air density 0.001 2gm/L.

Short Answer

Step by step solution

Defining the formula for determining the true mass

Step 2: Calculating the total density of pentane

Step 3: Calculating the volume of pentane

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Chemistry Textbooks

Chemistry Branches

The Earths Atmosphere

Ionic and Molecular Compounds

Inorganic Chemistry

Kinetics

Organic Chemistry

Study anywhere. Anytime. Across all devices.

Pentane $(C_{5} H_{12})$ is a liquid with a density of 0.626 g/mL near
258C. Find the true mass of pentane when the mass in air is 14.82 g.
Assume air density 0.001 2gm/L.