Which weigh more 50mL of water or 50 mL of ice

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.

What metric units would you use to measure the thickness of a key