*Can someone please explain how to solve this, I am so confused* Voyager 1 space probe was given 13.5 kg of plutonium that produced 470 Watts of energy at launch. The probe has been in space since 1977.
How much plutonium was left after 1 year in space?

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

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

Some liquids can be distilled, but only at temperatures that are so high that it is impractical, or so high the compound decomposes. explain why distillation such compounds at significantly less than atmospheric pressure (some degree of vacuum) would solve this problem.