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Marizza181 [45]
3 years ago
8

A sample of silicon rejected for use in an electronic circuit has an impurity of boron at a level of 3 parts per trillion. What

is the fraction of boron atoms in the silicon sample as written in scientific notation? In equation form 3 parts per trillion is written as 3/10^12 A) 3 x 10-12 B) 3 x 106 C) 3×10-9 D) 3 x 109

Chemistry
2 answers:
uysha [10]3 years ago
7 0

Explanation:

Below is an attachment containing the solution.

Law Incorporation [45]3 years ago
6 0

Answer:

A. 3 x 10-12

Explanation:

Generally, the parts-per notation is used to represent very small concentration without any specific unit.

Parts per million is notated as 10^{-6}

Parts per billion is notated as 10^{-9}

Parts per trillion is notated as 10^{-12}

Hence, 3 parts per trillion will be written as 3 x 10^{-12}

The correct option is A.

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