Aluminum is an example of
a.) solution 2.) a compound
c.) an element
d.) an alloy

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

What happened to the amount of carbon dioxide in the atmosphere from 2010–2017?

Apump contains 0.5 l of air at 203 kpa.you draw back on the piston of the pump, expanding the volume until the pressure reads 50.8 kpa. what is the new volume of the air pump