An atom or molecule with a net electric charge due to the loss or gain of one or more electrons. :)
Mass number = protons + neutrons
mass number = 5 + 7
mass number = 12
Answer:
Fe(NO3)3 + 3 NaOH ===》Fe(OH)3 + 3 NaNO3
D because wants you add the equation it should increase temp but decrease the value in pressure