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How many moles are contained in 5.6 l of h2 at stp

What happens to the temperature of a substance when the average kinetic energy of its particles increases?

With the largest atoms and the smallest number of valence electrons and with the smallest atoms and the greatest number of valence electrons are the most reactive. a. nonmetals; metals b. nonmetals; transition elements c. transition elements; metals d. metals; nonmetals