Answer / abhishek chanchal

75mg of any substance->100ml of solvent
further 1ml from 100ml in 10 ml of solvent=75ppm

Answer / naresh

Parts per million is ppm. preparation is same above

Answer / sachin khade

(weight of solute/wt of solvent)x 10^6

1 mg dissolved in 1 liter = 1 ppm
75 mg dissolved in 1 liter = 75 ppm

Answer / lutfor shikder

ppm stands for parts per million.Mathematically it is mg/L. To make 75 ppm we have to 75 mg of the target substance into a 1 Lite volumetric flask and dissolve it with the diluent and finally make volume up to the mark.

ppb= mcg/L

Answer / ulhas patil

7.5 mg sample in to 100 ml volumetric flast.ppm is called
parts per million.

Answer / veena v nair

ppm is parts per million.when a solute present in very minute amounts or trace amounts,the concentration is expressed as parts per million.
ppm=(number of parts of the components or mass of the component A/total mass of the solution)*10000000

Why is heat more oppressive on a damp hot day ?

1 Answers  

How are pka and strength of a weak acid related?

0 Answers  

Why do we hear thunder after seeing a flash of lightning ?

3 Answers  

While standing on railway platform and heating the whistle of an engine coming towards us , we hear the sound increasing; bit when the engine is receding from us it appears to fall why ?

1 Answers  

What are the names of the three different rays emitted by radioactive substances ?

1 Answers  

Which of the above conductivity measured during conductometric titration?

0 Answers  

Why does a white paper appear white, when light is not to fall on it ?

1 Answers  

Of what substance are lead pencils made ?

2 Answers  

If you are given two liquids, which look like water, how can you, by two physical tests, prove which one of them may be water ?

2 Answers  

Explain the Avogadro?s law

1 Answers  

Explain the Hard and Soft water ?

1 Answers  

Why are wires used to carry electricity ?

1 Answers