Ais an ecosystem that is covered with water for at least part of the year

Plz choose one of the compounds from the table and explain how you know the numbers of atoms in your formula. is it possible for two different compounds to be made from the exact same two elements? why or why not? with a limited number of elements (less than 120 are known), does this mean we also have a small number of compounds or do we have a large number of compounds in this world?

Which factor is likely to impact the possible number of compounds ?

Which symbol can be used to indicate the pressure at which a chemical reaction is carried out? 25°c 2 atm pa