Calculation ppm

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sue
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Calculation ppm

Post by sue »

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

Post by 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
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Re: Calculation ppm

Post by sue »

ty
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ChenBeier
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Re: Calculation ppm

Post by ChenBeier »

What is meant with ty. What you dont understand. How many Atomen is one 1 mal?
sue
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Re: Calculation ppm

Post by sue »

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