Answer:
A molecule composed of just one atom, and lacking any covalent bonds. The noble gases (He, Ne, Ar, Kr, Xe, and Rn) are all monoatomic, whereas most other gases are at least diatomic
Explanation:
waning gibbous I belive
both are chemical changes
Answer: 1.8 * 10 ^ -5
2.01588 grams
