What is the concentration of arsenic in ppb

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A 45-g serving of a white rice contains 9.0 µg of inorganic arsenic.  What is the concentration of arsenic in ppb?   _____________

How many digits should this number contain?  _____________     If you didn't already do this, write the answer in scientific notation to show the correct number of digits.  ______________

Reference no: EM13849181

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