What is the density of a substance that has a mass of 8.5 grams (g), and when placed in a graduated cylinder, the volume of water rises from 23 mL to 26 mL? 25.5 g/mL

0.35 g/mL

11.5 g/mL

2.83 g/mL

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.

Is a pencil falling to the floor anon contact force, a force, or a contact force

Asample of hydrated tin (ii) chloride (sncl2) has a mass of 4.90 g. when it is dehydrated, it has a mass of 4.10 g. which is the correct chemical formula for the hydrate? sncl2•2h2o          sncl2•4h2o          sncl2•6h2o