<span>Elements are matter made of one kind of atom.</span>
This equation is impossible. NaSO4 is non-existent. Did you mean Na2SO4?
thermal contact
When heat flows from one object or substance to another it is in contact with, the objects or substances are said to be in thermal contact. The state where objects in thermal contact with each other reach the same temperature, no heat flows between them.
The Answer is 10 it a little difficult to explain but I’ll try my best
Ammonia isn't an element, it's a compound made by mixing the elements Nitrogen and Hydrogen in the Haber process. Therefore, it isn't on the periodic table
