Question

A chemistry student needs 80.0mL of diethylamine for an experiment. By consulting the CRC Handbook of Chemistry and Physics, the student discovers that the density of diethylamine is ·0.706gcm−3. Calculate the mass of diethylamine the student should weigh out.

Answer 1

Answer:

The answer to your question is: mass = 56.48 g

Explanation:

V = 80 ml of diethylamine

density = 0.706 g/cm³

mass = ?

Formula

density = mass / volume

volume x density = mass

mass = 80 x 0.706                      substitution

mass = 56.48 g                           result

Answer 2

Volume and mass is the measurement of the object or any given sample while the density tells about the space taken up by the object or sample of the given volume.

56.48 g of diethylamine will be required.

How to calculate the mass of diethylamine?

Given,

• Volume of the solution (V)  = 80.0 mL
• The density of the diethylamine $(\rho)$ =  0.706 gcm⁻³
• Mass (M) = ?

Mass can be calculated by the formula:

$\rm Density = \dfrac{Mass}{Volume}$

From the above equation:

$\begin{aligned}\rm Mass &= \rm Volume \times Density\\\\\rm M &= 80 \times 0.706 \\\\\rm M &= 56.48 \;\rm g\end{aligned}$

Therefore, 56.48 gm of diethylamine is needed.

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