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How do chemists report concentrations?

Answer 1

#"Molality, molarity, parts per million...........??"#

#"Molality"="Moles of solute"/"Kilograms of solvent"#

#"Molarity"="Moles of solute"/"Litres of solution"#

#"parts per million"="milligrams of solute"/"Litres of solution"#

As to which term you use that is precisely dependent on the chemistry you do..... Synthetic chemists would tend to use #"molarity"# and #"molality"#. Analytical and physical chemists would tend to use #"ppm"#.........

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Answer 2

Naomi Aronson

Chemists report concentrations using various units such as molarity (M), molality (m), normality (N), and percentage by mass or volume. The most common method is molarity, which is expressed as moles of solute per liter of solution (mol/L).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.