Which statement describes a chemical reaction at equilibrium? (1) the products are completely consumed in the reaction.
(2) the reactants are completely consumed in the reaction.(3) the concentrations of the products and reactants are equal.(4) the concentrations of the products and reactants are constant.

All cells are made of four types of acids, lipids, proteins, and carbohydrates.

What volume would 2.25 moles of ne has occupy at stp?

The table lists the lattice energies of some compounds.compoundlattice energy (kj/mol)lif            –1,036licl            –853naf            –923kf            –821nacl            –786which statement about crystal lattice energy is  best  supported by the information in the table? the lattice energy increases as cations get smaller, as shown by lif and kf.the lattice energy increases as the cations get larger, as shown by lif and licl.the lattice energy decreases as cations get smaller, as shown by nacl and naf.the lattice energy decreases as the cations get smaller, as shown by naf and kf.