Question

A patient has a cholesterol count of 206 mg/dL. What is the molarity of cholesterol in this patient’s blood if the molecular mass of cholesterol is 386.64 g/mol? (1 L = 10 dL)

Answer 1

Explanation:

The correct option is C

5.3

×

10

−

4

M

Mass of cholesterol in 1 L

=

206

×

10

−

3

g

Number of moles of cholesterol

=

weight

molar mass

=

206

×

10

−

3

g

386.64

g/mol

=

5.3

×

10

−

4

mol

Molarity

=

number of moles

volume in L

=

5.3

×

10

−

4

mol

1

L

=

5.3

×

10

−

4

M