Calculate how many moles of NO2 form when each quantity of reactant completely reacts via the following reaction:
2N2O5(g)→4NO2(g)+O2(g)

2.73 kg N2O5
Express your answer using three significant figures.

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.