It occurs when energy is supplied or withdrawn :)
Answer: 2.35 seconds rounded
Explanation:
the number unrounded us 2.352941176
Answer:
Calcium sulphide
Explanation:
If we look at the compound, we will discover that it is an ionic compound. The compound is comprised of Ca^2+ and S^2-.
The cation Ca^2+ is the calcium ion while the anion S^2- is the sulphide ion hence the compound is rightly named calcium sulphide.
an ore is a naturally occurring solid material from which a metal or valuable mineral can be profitably extracted.
