3 years ago

Help me please thanks

1 answer:

6 0

Then answer would be D. Answer D is correct because you would need to use a better solvent to see the ink separate on the chromatography paper. Hope that helps. :)

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How many liters of volume is one mole of gas at standard temperature and<br> pressure?

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erik [133]

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Explanation:

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Unknown:

Parts per million of fluoride = ?

Solution:

The parts per million is the amount of solute in milligram dissolved in a liter of water or milligram per kilogram of solvent

It is a unit used to express very small concentration.

we need to convert g - mg

500g = 500 x 10⁻³mg = 0.5mg

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learn more:

Parts per million brainly.com/question/2854033

#learnwithBrainly

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