An object that mass a lot of mass for a unit volume is said to be very: O high in calories There is not enough information to answer the question dense O loud O None of these answers

There's not enough information because it just says "a lot of mass" no definite numbers or "masses"

In each individual 3D water molecule models, the bonds between the hydrogen atoms and the oxygen atom are covalent bonds. ... Water molecules and ethanol molecules are polar covalent molecules while the ethane is a nonpolar covalent molecule. Ionic bonds are formed between the sodium and chloride ions.