HELP ASAP PLZ!!An object with a mass of 7.5g raises the level of water in a graduated cylinder from 25.1 mL to 30.1 mL. What is the density of this object?

According to the vsepr theory what is the shape of a molecule that has a central atom valence three other items with no lone pairs of electrons

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?