Question

You are performing an experiment which requires you to add 2.00 grams of benzene to a reaction. Benzene has a density of 0.790 g/mL. You should add:
a. 2.53 mL
b. 0.395 mL
c. 1.58 mL
d. 2.00 mL

Answer 1

Answer:

a. 2.53 mL

Explanation:

Hello,

In this case, by knowing the density is defined as the ratio of the mass to the volume:

$\rho =\frac{m}{V}$

Since both the mass and density of benzene are given, we can easily compute the volume by solving for it:

$V=\frac{m}{\rho}=\frac{2.00g}{0.790g/mL}\\ \\V=2.53mL$

Therefore the answer is a. 2.53 mL .

Best regards.

Answer 2

Answer:

a. 2.53 mL

Explanation:

The density is an intensive property, that is, it does not depend on the system size or the amount of material in the system. At a given temperature, the density of a liquid is constant, so it can be used to identify a substance.

The density (ρ) results from the quotient between the mass (m) of the liquid and its volume (V). We can use this expression to find the volume corresponding to 2.00 grams of benzene (ρ = 0.790 g/mL).

ρ = m / V

V = m / ρ

V = 2.00 g / (0.790 g/mL)

V = 2.53 mL