Mass, if you know what element you are working with.
Oxidation of D -Ribose in presence of hypobromous acid gives D-Ribonic acid
B, the height above or below sea level
A circuit breaker must be replaced after too much current flowing through it causing it to melt.
A conjugate acid is a conjugate base with hydrogen ions attached to it. In this case, the conjugate base is the carbonate ion, CO₃⁻². This ion can have two hydrogen ions, so the conjugate acid is:
H₂CO₃
This compound is known as carbonic acid.