after one half life ___ % of the atoms will change to a stable isotope and % will remain radioactive. After three half lives ___% of the atoms will change to a stable isotope and ___% will remain radioactive.

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

Consider an insulating crystal, made up of layers of atoms. what form would you expect the temperature dependence of the phonon heat capacity to approach at extremely low temperatures if the interlayer coupling is i)very strong (rigid coupling), and ii) very weak. explain.

If the new moon happens on january 15th, what shape will it be on february 6th?