molar mass NaCl = 58.44 g/mol
Volume = 300.0 mL / 1000 => 0.3 L
number of moles:
1 L ------------- 0.2 M
0.3 L ---------- moles ?
moles = 0.3 x 0.2 / 1 => 0.06 moles of NaCl
Mass of NaCl:
1 mole NaCl -------------- 58.44 g
0.06 moles NaCl --------- mass
mass = 0.06 x 58.44 => 3.5064 g of NaCl
