Measuring very small concentrations such as pollution, we use?

1 ⤊

a. Molarity
b. Molality
c. Parts Per Million (PPM)

2007-06-08 06:53:52 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

C, PPM.

2007-06-08 06:56:35 · answer #1 · answered by JLynes 5 · 0⤊ 0⤋

Use any units you like with a suitable metric prefix to make the numerical portion at least one digit to the left of the decimal.

2007-06-08 14:14:45 · answer #2 · answered by Uncle Al 5 · 1⤊ 0⤋

that would be parts per million

2007-06-08 13:57:09 · answer #3 · answered by dmblue 2 · 0⤊ 0⤋

c) PPM

2007-06-08 14:16:38 · answer #4 · answered by maussy 7 · 0⤊ 0⤋