Question

4) Find the mass of 250.0 mL of benzene. The density of benzene is 0.8765 g/mL

Answer 1

$\sf{\red{REQUIRED \ ANSWER: }}$

The relation between mass (m), volume (v) and density  (ρ) can be expressed as:

$\boxed{\sf{\red{\rho=\dfrac{m}{v} }}}$

Now, it is given that:

The density of benzene,  

ρ  = 0.8765  g/mL.

The volume of the benzene,  

V  =  250  g/mL.

Then substitute these in our formula.

$:\to \sf 0.8765=\dfrac{m}{250}$

$:\to \sf m=0.8765 \times 250$

$:\to \sf{\pink{m=219.125}}$

$\large \boxed{\frak{\purple{Mass \ of \ benzene = 219.125 \ grams}}}$

Answer 2

Given: Volume of benzene: 250 ml

Density of benzene = 0.8765 g/ml

To Find: Mass of benzene

Solution:

• The relation between the mass, volume and density can be expressed by the definition or the formula of density of a substance.
• The density of a substance can be expressed as the ratio of mass of a substance by its volume.
• So, it can be formulated as:
• $density \: = \frac{mass}{volume}$
• As the density of the benzene is given which is equal to 0.8765 g/ml.
• And also, the volume of benzene is given which is equal to 250 ml
• So, to find mass, substitute the formula,
• mass = density × volume of benzene
• mass = 0.8765 × 250 = 219. 125 grams.

Hence, the mass of benzene is 219. 125 grams.