8 H2= 0.90 g , hope that helps
you with your work
It is a covalent bond. Whenever a compound uses such suffixes like mono, di, tri, tetra, and so on, it is a covalent compound- thus having covalent bonds.
LiNO3; nitrate has a charge of -1, and lithium has a charge of +1
Answer:
1. Not to have enough salt water on the foil
2.not cleaning the foil well to remove interfering materials