Nail polish remover containing acetone was spilled in a room 7.2 m × 5.8 m × 3.9 m. measurements indicated that 6,400 mg of acetone evaporated. calculate the acetone concentration in micrograms per cubic meter.

Volume of room  =

=

Now, according to conversion factor, convert 6,400 mg to micrograms

Since, 1 mg is equal to 1000 microgram.

Therefore, 6,400 mg  =

= 6,400,000 micrograms of acetone.

To calculate concentration of acetone, divide volume and evaporated amount of acetone in micrograms.

Thus,

Concentration of acetone  =

= 39296.5910 microgram per cubic meter or

Hence, concentration of acetone is equal to

they are made of gases.

they have a spherical shape.

they make energy through fusion.