Calculate the mass of water produced when 1.95 g of butane reacts with excess oxygen.

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

The atomic number, or number, is the described as the number of in the nucleus of an chemical element.

What’s the theoretical yield of solid lead