Concept explainers
(a)
Interpretation:
To find the empirical formula of ibuprofen.
Concept Introduction:
Empirical formula is the simplest ratio of different elements in a compound.
(b)
Interpretation:
To find the molar mass of ibuprofen
Concept Introduction:
Molar mass is found by adding the
(c)
Interpretation:
To find the mass percent of O in ibuprofen.
Concept Introduction:
(d)
Interpretation:
To find the grams of C in 0.425 g of ibuprofen
Concept Introduction:
An arithmetical multiplier which is used for converting a quantity expressed in one unit into another equivalent set of units is said to be conversion factor.
(e)
Interpretation:
To find the moles of ibuprofen in 25.0 g of ibuprofen.Concept Introduction:
The relationship between mass, moles, and molar mass:
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