I have a solution to a similar problem here but different given values.
Answer:
0.409 g
Step-by-step explanation:
As stated, 1 mole of NaCl weighs 58.44 g.
A 0.02 M solution contains 0.02 moles per liter.
Hence, 1 litre would contain:
58.44 x 0.02 = 1.1688 g
However, there are only 350 ml, which is 0.35 liters.
Therefore, there would be 0.35 x 1.1688 g in total, 0.409 g