A sample of iron has the same dimensions of 4 cm x 2 cm x 4 cm. If the mass of this rectangular-shaped object is 97g, what is the density of iron

Seawater contains approximately 3.5%nacl by mass and has a density of 1.02 g/ml. what volume of seawater contains 7.5 g of sodium?

The following transition occurs at a molecular level for a substance. what transition corresponds to this change in microscopic structure? the carbon dioxide molecules on the left are in a regular, tightly packed pattern. after heating, it becomes much lower density. a. melting b. boiling c. sublimation d. freezing

Scuba divers use tanks of compressed air to them breathe. gases can be compressed because?