What is Density?: the mass of an object

the volume of 1 unit of mass. (e. g. the volume of 1 g)

the mass of 1 unit of volume. (e. g. the mass of 1 cm3)

the volume of an object

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration?

Which statement is true about a catalyst? a: a catalyst decreases the rate of the reaction. b. a catalyst is consumed during a chemical reaction. c. a catalyst lowers the activation energy of a reaction. d. a catalyst increases the reactant concentration during a reaction.

How many atoms or molecules are there in a mole of a substance?