Examlex
A taxpayer may not deduct the cost of new curbing (relative to a personal residence) even if the construction is required by the city and the curbing provides an incidental benefit to the public welfare.
pKa
A measure of the acidity of a hydrogen atom in a molecule, indicating the tendency of the molecule to donate a proton.
Conjugate Acid
The species that is formed when a base gains a proton.
Ammonia
A compound of nitrogen and hydrogen with the formula NH3, noted for its pungent smell and use in fertilizers.
Molecular Formula
A representation of the types and numbers of atoms in a compound without showing how they're connected.
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