Answer:
nitrogen
Explanation:
Nitrogen, in cans of Guinness stout (to give it that distinctive head) and in fire suppression systems.
From the given choices, aluminum oxide is the only ionic
compound there. The ions present are Al3+ and O2-. Aluminum is a
chemical compound of aluminum and oxygen with the chemical formula Al2O3. It is
the most frequently happening of numerous aluminum oxides, and precisely recognized
as aluminum (III) oxide.
Answer:
The higher the temperature the more water evaporates and that affects the convection process
Explanation:
It is an isotope of Calcium, which has the symbol Ca
