Which of these pulls denser rocks towards Earth's center? 1.thermal energy
2.gravity
3.radiation

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?

How many moles of water are created if 3 moles of hydrogen react completely with excess oxygen?

How many atoms or molecules are there in a mole of a substance?