Why have scientists reasoned that Earth's outer core is liquid?

Calculate the change in entropy if br2(l) is converted to br2(g). s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)

What is the equilibrium constant of aa+bb=cc+dd

What is avogadro’s number, and why is it useful