Final answer:
In an ICE table, all amounts must be converted into concentrations or partial pressures to properly analyze chemical equilibria and use the equilibrium constant expressions.
Step-by-step explanation:
Before inserting values into an ICE table (which stands for Initial, Change, and Equilibrium), you must convert all amounts into concentrations, typically in units of molarity (M), which is moles per liter. For gases, you might use partial pressures (in atmospheres, for example). This standardization is necessary because the ICE table is used to analyze chemical equilibria, where concentrations or pressures are used in the equilibrium constant (K) expressions. It's important to use concentrations because the equilibrium constant expression is defined in terms of the molar concentrations (or pressures for gases) of the reactants and products at equilibrium.