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Be sure to answer all parts. A 1.00−g sample of stream water was found to contain...

Be sure to answer all parts.

A

1.00−g

sample of stream water was found to contain 1.0

×

10−6 g lead.

Calculate the

concentration of lead in the stream water in units of

%(m/m),

ppt,

and ppm.

Which is

the most suitable unit? Enter your answers in scientific notation.

×

10 % (m/m)

×

10 ppt

×

10 ppm

The most suitable unit is %
.
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