Question

A plastic cup weighs 45.0 grams and has a density of 5.0 g/mL, what is the volume of the cup in cm3? (USE THE CORRECT NUMBER OF SIGNIFICANT FIGURES)

Answer 1

0.9cm³

Step-by-step explanation:

Density(D)= 5.0g/mL

gravity(g) = 10.0m/s²

mass(m) = ?

weight(w) = 45.0g

volume = ?

soln

knowing that

weight = mass × gravity

W = m × g

45 = m × 10

45 = 10m

`m = (45)/(10) = 4.5`

m = 4.5g

`density = (mass)/(volume)`

`5 = (4.5)/(v)`

cross multiply

`5v = 4.5`

`v = (4.5)/(5)`

v = 0.9cm³

i hope this helps