Which equilibrium constant expression is correct for the following reversible reaction?

CO(g) + H2 (g) ⇌ C (s) + H2O (g)

[H2O]

[CO][H2]

[CO][H2]

[C][H2O]

[H2O]

[CO][H2]2

[C][H2O]

[CO][H2]

Marcel just purchased 1.69 grams of iron fillings in order to make living putty for his 6 year old niece. how many moles of iron are made in his sample?

Air can be considered a mixture. which statement does not explain why?

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