Which of the following equations can be used to determine the change in enthalpy of a system?

The compound methyl butanoate smells like apples. its percent composition is 58.8% c, 9.9% h, and 31.4% o. what’s the empirical formula ?

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.

Consider the elements bromine and chlorine; which elements has a larger ionic radius ?