Answer:
0.13 grams of O2
Explanation:
Just did worksheet
What is a unwanted change in the environment caused by substances or from of energy??
Answer:
pollution I think
Explanation:
Isotopes are atoms of the same element that have different O principal chemical properties, masses. O numbers of protons, O numbers of electrons.
Answer:
Different atomic mass, number of neutrons
Explanation:
Isotopes refer to atoms of the same element, with same atomic number, number of protons & electrons. However, they have different atomic mass, because of different number of neutrons.