Asked by martina

what weight of NaCl is needed to prepare 200mls of a 250ppm Na solution?

9 years ago

Answered by bobpursley

WEll, the mass of 200ml is 200grams.

massNaCl=250E-6 * 200grams=.05grams
check my work.

9 years ago

Answered by martina

working not really clear. can you please explain further.

9 years ago

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