Determine the mass of an object that, when places in a 25-ml graduated cylinder containing 14 ml of water, causes the level of the water to rise to 19 ml. the object has a density of 3.2 g/ml. how do you set up the equation?

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Which is a chemical property of iron? a. it forms iron oxide (rust) when exposed to moisture and air. b. it is a gray–black metal that is hard to the touch. c. it has a melting point of 2795°f (1536°c). d. it is a good conductor of heat

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.