A 221 mL cup of whole milk contains about 39 mg of cholesterol. Express the cholesterol concentration of the milk in kilograms per cubic meter (kg/m3)

0.1765 Kg / m3

Explanation:

Mass of cholesterol = 39mg

Volume = 221mL

The concentration is given as; Mass/ Volume

Concentration = 39 / 221 = 0.1765 mg /mL

The relationship between mg / mL and Kg / m3 is;

1 mg / mL = 1 Kg / m3

This means that;

0.1765 mg /mL = 0.1765 Kg / m3

so here we go

atomic mass

239 + 1 = y + 134 + 3 combine like terms

240 = y + 137             subtract 137 from both terms

240 - 137 = y

103 = y

atomic number

94 = z +54 + 0

94 = z + 54               subtract 54 from both sides.

40 = z

answer