What is the mass of 3 x 10^21 molecules of nitric acid, HNO3?
(Show steps please)

In which phase(s) do the molecules take the shape of the container?

What three things determine the shape and size of a puddle when water is poured out onto a surface

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal.b. he is determining chemical properties that are sufficient to identify the metal.c. he is determining physical properties that are insufficient to identify the metal.d. he is determining chemical properties that are insufficient to identify the metal.