The concentration is related to the mass through the number of mole:
and the number of mole is related to the mass by:
Therefore, we can first calculate the number of mole from the concentration and the volume by:
Now from the number of mole we can find the mass by:
Thus we will need to weigh
Here is a video that will show you how to prepare a solution in the lab:
Lab Demonstration | Solution Preparation & Dilution.