Answer:
0.133 mm
Step-by-step explanation:
From the question,
Density (D) = mass (m)/Volume (V).................... Equation 1
D = m/V
make V the subject of the equation
V = D×m............................ Equation 2
Given: D = 2.7 g/cm³, m = 2.568 g
Substitute into equation 2
V = 2.7(2.568)
V = 6.934 cm³.
But,
Thickness (n) = Volume/Area
n = V/A......................... Equation 3
Where A = Area of the square foil = 22.86² = 522.58 cm²
n = 6.934/522.58
n = 0.0133 cm.
n = 0.133 mm
