BRAINLIEST FOR FREE AND FREE 20 POINTS FOR HELPING ME!!! Please explain VSEPR (Valence Shell Electron Pair Repulsion) of Molecular Geometry.

Alarge marble is dropped in a graduated cylinder with 35ml of water in it.the water level increases to 49ml.what is the volume of the marble

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh