An electromagnet is a solenoid with a piece of ferromagnetic material within it.
true.
or
false.

What happens to isotopes that are unstable?

Amixture initially contains a, b, and c in the following concentrations: [a] = 0.300 m , [b] = 1.05 m , and [c] = 0.550 m . the following reaction occurs and equilibrium is established: a+2b⇌c at equilibrium, [a] = 0.140 m and [c] = 0.710 m . calculate the value of the equilibrium constant, kc.

If an atom has 12 protons and 13 neutrons