(Na + -K +)-ATPase (2) o ATP transiently phosphorylates Asp to form a high energy intermediate = All P-type ATPases o While every single reaction step is reversible, the entire transport cycle is not.
Atomic mass of magnesium (Mg) is 24.305 g/mole The atomic number is 12.
Best Answer: you are correct that protons determine the element's identity. Mg-24 and Mg-26 both have 12 protons but the 24 and 26 are the number of protons plus neutrons. Mg-24 has 12 protons and 12 neutrons, while Mg-26 has 12 protons and 14 neutrons. elements that have the same number of protons but different numbers of neutrons are called isotopes. Mg will always have 12 protons...if you change the number of protons, you change the element. Mg-24 and Mg-26 are two different isotopes of magnesium.