Calculation ppm

[sue]

Calculate the ppm of CdCl₂ if 1.44x10 ^ 20 Cl atoms were found in a small lake whose volume is 145L.
Helpaaaaaaaaaaaaaaa

[ChenBeier]

Use Avrogadro constant to calculate the mol of Cl. This convert the mole to Cadmium chloride. With molar mass you get the mass. The concentration is given by division through the volume. 1 ppm is 1 mg/kg ~ 1 mg/l

[sue]

ty

[ChenBeier]

What is meant with ty. What you dont understand. How many Atomen is one 1 mal?

[sue]

mmmm i mean that ty is thank you but i dont know