How many moles of glucose (MW 180 amu) are in 90,000 mg?

Question

How many moles of glucose (MW 180 amu) are in 90,000 mg?

a, 4 moles

 

b,  1 mole

 

 c, 2 moles

 

 d, 0.5 moles

 

Answer 1

First, convert mg to g:

90,000 mg x 1 g / 1000 mg = 90 g glucose

Convert 90 g to moles:

90 g x 1 mol/180 g = 0.5 moles (answer d)