How many neutrons does element x have it it’s atomic number is 20 and it’s mass is 88?

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.

Which of the following shapes would represent a molecule with two bonded atoms and 3 lone pairs on only one of them , trigonal planar , bent , trigonal pyramidal , linear

You have a liquid that exhibits diltancy. you want to pour it from a bottle. what should you do to the bottle before pouring