How many molecules of glucose are in a 2.0ml of a 1.02ml solution of glucose?

Volume in liters:

2.0 mL / 1000 => 0.002 L

Molarity = 1.02 M

Number of moles glucose :  

n = M  x V

n = 1.02 x 0.002 => 0.00204 moles

1 mole 6.02x10²³ molecules
0.00204 moles ??

0.00204 x ( 6.02x10²³) / 1 =>  1.228x10²¹ molecules of glucose

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