Question

A frying pan needs a Teflon coating of 1.00 mm in thickness to cover an area of 36.0 square inches. How many ounces of Teflon are needed? The density of Teflon = 0.805 g/mL

Answer 1

m = 0.659 ounce

Step-by-step explanation:

It is given that,

The thickness of a Teflon coating is, d = 1 mm

Area of the coating, A = 36 inch²

The density of Teflon, d = 0.805 g/mL

We need to find ounces of Teflon are needed.

Firstly, find the volume of the Teflon needed,

1 inch² = 6.4516 cm²

36 inch² = 232.258 cm²

Density,

`\rho=(m)/(V)`

V is volume of the Teflon needed, V = Ad

So,

`m=\rho V\\\\m=0.805\ g/cm^3* 232.258\ cm^2 * 0.1\ cm\\\\m=18.69\ g`

Also, 1 gram = 0.035274 ounce

18.69 gram = 0.659 ounce

So, 0.659 ounces of Teflon are needed.