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Environmental Soil Chemistry Math
Environmental Soil Chemistry Math
11
Chemistry
Undergraduate 4
01/07/2017

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Term
how to calculate molarity (M)
Definition
M = (moles solute) / (L solution) molar
Term
how to calculate molality (m)
Definition
m = (moles solute) / (kg solvent) molal
Term
how to calculate normality (N)
Definition
N = (moles equivalents) / (L solution) normal
Term
how to calculate mole fraction (Xa)
Definition
Xa = (moles a) / (total # of moles)
Term
how to calculate enrichment ratio (ER)
Definition
ER = (median element concentration in soil) / (its mean concentration in the Earth's crust)
Term
enrichment ratios (ER) that show no depletion or enrichment
Definition
between 0.5 and 2

values that lie in this range are not different from ER = 1
Term
enrichment ratios (ER) that show depletion
Definition
less than 0.5
Term
enrichment ratios (ER) that show some enrichment
Definition
between 2 and 10
Term
enrichment ratios (ER) that show strong enrichment
Definition
above 10
Term
how many lbs are in 1 kg?
Definition
2.204623 lb/kg
Term
how many lbs are in 1 kg?
Definition
2.204623 lb/kg
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