CH201 Test 1 Equations

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Last updated 7:09 PM on 9/8/26
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11 Terms

1
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mass % =

(g specified element/total g)100

2
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% yield =

(actual/theoretical)100

3
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excess = ?

(amount leftover/amount used)100

4
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M = ?

Molarity; mols solute / L SOLUTION

5
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m = ?

molality, mols solute / kg SOLVENT

6
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XA = ?

Mole fraction of A: mols solute / (mols solute + mols solvent)

7
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PPM = ?

parts per million; g solute / 1,000,000 g solution (use as ratio; i.e 10 ppm = 10g /1,000,000 g)

8
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PPB = ?

parts per billion; g solute / 1,000,000,000 g solution

9
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what equation relates concentration and volume?

M1 V1 = M2 V2

10
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Volume percent = ?

(volume solute / volume solution)100

11
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what is the rule with absorbance and concentration? when does it apply?

A1/M1 = A2/M2 ONLY WHEN molar absorptivity and pathlength are CONSTANT