Yes, you're right the answer is 0,02 moles.
Answer:
u already know the answer
Explanation:answer
The mass number plays an important role for elements and their isotopes. Mass number comes from the addition of protons and neutrons (their weight). Isotopes are the elements, but with a different number of neutrons. So in turn, by subtracting the number of protons (atomic number) from the mass, you can find the number of neutrons.
False. The number of neutrons can be more or less than the number of protons.
