Which technology is NASA developing that will help astronauts reach Mars? Corona Freedom Orion Skylab

What is the mass of sodium in 3 moles of sodium chloride

Ammonium perchlorate nh4clo4 is the solid rocket fuel used by the u.s. space shuttle. it reacts with itself to produce nitrogen gas n2 , chlorine gas cl2 , oxygen gas o2 , water h2o , and a great deal of energy. what mass of nitrogen gas is produced by the reaction of 2.1g of ammonium perchlorate?

What is a difference between a mixture of elements and a mixture of compounds