You can study article about slope and speed
Its electronic confuguration is 2.8.6 so it occupies 3 shells.
Molar mass Li2O = 7.0 x 2 + 16 => 30 g/mol
1 mole Li2O ---------- 30 g
( moles Li2O ) -------- 45.0 g
moles Li2O = 45.0 x 1 / 30
moles Li2O = 45.0 / 30
= 1.50 moles of Li2O
hope this helps!
It's 10.
Mass = density x volume
M = 1g/ml(10ml) = 10g
