I just need to confirm that I did my work correct

3. 4 uL of a 25 mm stock solution of a substrate is added to 5 mL of water. Calculate the following values. The substrate molecular weight is 150 g/mol. Substrate volume in Dilution factor Substrate number of moles Substrate concentration for the diluted solution in mm ml Substrate Substrate concentration concentration for the diluted for the diluted solution in solution in mole/L mg/5ml