To determine the number of moles in 20 µL of tert-butyl chloride, we need to know its density and molecular weight.
Tert-butyl chloride has a density of approximately 0.87 g/mL and a molecular weight of about 92.14 g/mol.
First, we convert the volume from microliters to milliliters:
20 µL = 20 ÷ 1000 = 0.02 mL
Next, we can calculate the mass of tert-butyl chloride using its density:
Mass = Density × Volume
Mass = 0.87 g/mL × 0.02 mL = 0.0174 g
Now, we can calculate the number of moles:
Moles = Mass ÷ Molecular Weight
Moles = 0.0174 g ÷ 92.14 g/mol ≈ 0.000188 moles
So, in 20 µL of tert-butyl chloride, there are approximately 0.000188 moles.