Which of the following statements are part of John Dalton's atomic theory?
I. All atoms of an element are identical in all ways.
II. Isotopes have the same number of neutrons but a different number of protons.
III. Compounds are always composed of two or more elements.
IV. Atoms of different elements are different. V.Compounds are random chemical combinations of several elements

An object of dimensions 50 cm x 40 cm x 0.20 cm has a mass 60g. find its density in g/cm3 and kg/ m3

Lin yao looks at the back of a spoon. how should she describe her reflection? upside down and smaller upside down and larger right-side up and smaller right-side up and larger

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.