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A doctor orders a blood sample from a child to test for traces of lead in the blood. Which of the following concentration units would best meet this need? O grams per liter O molality O percentage by mass
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A doctor orders a blood sample from a child to test for traces of lead in the blood. Which of the following concentration

units would best meet this need?
O grams per liter
O molality
O percentage by mass
O parts per million

User Supraja Ganji
by
4.9k points

2 Answers

12 votes

Answer:percentage by mass

Step-by-step explanation:

User Vinay John
by
4.5k points
8 votes

Answer:

D. parts per million

Step-by-step explanation:

To find such small trace amounts in such a large volume as blood, you would need a smaller unit to identify the amount. ppm is the smallest unit option among the four.

User Pikk
by
4.3k points
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