How many moles of oxygen gas are needed to react with 16.2 moles of hydrogen gas to produce water? O2 (g) + 2H2 (g) --> 2H20 (1)
Just write the numerical answer rounded to the tenths place.

PLEASE HELP! ILL GIVE BRAINIEST

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.