Answer:
question not specific..grams? mols? molecules/atoms/ions?
Explanation:
0.100 mol/ dm³ NaCl
200/1000 = 0.2 dm³
Na = 23
Cl = 35.5
molar mass = 58.5g/mol
gNaCl = x
58.5g/mol * 0.100mol/dm³ * 0.2dm³
gNaCl = 1.17 grams
For mols
58.5g/mol ÷ 1.17g = 50molNaCl
for molecules/atoms/ions
50molNaCl * 6.022 x 10 ^-23 =795.47molecules/atoms/ions
