How many molecules of NH3 are there in a sample of 3.39 moles NH3?

State the formula for density in words and mathematical symbols

Based on the equation and the information in the table, what is the enthalpy of the reaction?

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.