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First Order Reaction

Question

Concentration $1$ microgram per gram is $x$ ppm. Then, the value of $x$ is :

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Solution

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1 microgram $=$ 0.000001 gram.
1 gram $=$ 1 gram.
1 microgram/gram $=$ 0.000001/1 $=$ 1/1000000 $=$ 1 ppm.

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