Answer:
Possibly the addition of oxygen from the atmosphere
Explanation:
Answer:
Examples of isotones include carbon-12, nitrogen-13 and oxygen-14. These atoms all have six neutrons and six, seven and eight protons respectively. A mnemonic that can be used to differentiate isotones from isotopes and isobars is as follows: same Z (number of protons) = isotopes.
About 4 C to for water density until it is cooled
COCH. that is the answer,
J. Hope this helps you!