Asolution with a ph less than 7 is neutral

(true) or (false)

Can someone me with questions 15 to 17 plz.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Consider this equilibrium: n29) + o2(g) + 2no(c).nitrogen gas and oxygen gas react when placed in a closed container. as the reaction proceeds towards equilibrium, what happens to the rate of thereverse reaction?