Which expression correctly calculates the enthalpy change of a reaction using standard enthalpies of formation?

What is the electron configuration of nitrogen (Z = 7)?

Ionization energy generally:

The carbon atom in methane (CH₄) is:

Thermochemistry is the study of:

At constant pressure, the heat exchanged during a reaction is equal to:

What is the energy of a single photon of light that has a wavelength of 5.00 x 10^-7 m? 

The “Intolerable Acts” was the colonists’ name for the __________ Acts of 1774.

During the Constitutional Convention, which states generally opposed an unelected federal judiciary?

What does the Ninth Amendment say?