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
hope this helps!
