Experiments test the scientists' ideas.
the density increases down the group.
Answer:
1. 4
2. 2
3. 3
4. 1
Explanation: just did it on edge 2021
80.6 g
Explanation:
MgO=24.3+16=40.3 g
48.6/24.3= 2 moles
64/2x16= 2 moles
2x40.3= 80.6g