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Okay:
So I have this question, but have no clue how to tackle it.

Iron conentrations of 0.2 and 0.3 ppm in water can cause fabric staining when washing clothes. A typical wash uses 12L of water. What is the maximum mass of iron that can be present so that the clothes will not be stained?

Please help:(

2007-01-20 08:05:08 · 1 answers · asked by Viktor Z 1 in Science & Mathematics Chemistry

1 answers

PPM isn't so bad if you consider it kind of like percent, with percent being PPH or parts-per-hundred. Now 0.2 ppm will stain clothes, so we can assume that 0.1 ppm wouldn't. 12 L of water is 12,000 mL and if the density of water is 1 g/mL (usually accepted as a ballpark figure) we have 12,000 g of water. One part-per-million of this would be 0.012 g of iron (divide by one million) so 0.1 ppm would be 0.0012 g of iron.

2007-01-20 08:13:53 · answer #1 · answered by kentucky 6 · 0 0

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