Question

How many of NaCl are in 200 ml of a 0.100 M NaCl solution?

Answer 1

question not specific..grams? mols? molecules/atoms/ions?

Step-by-step 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