If you have 100 grams of a radioactive isotope with a half life of 10 years how much of the isotope will you have left after 20 years

Temperature is _related to the average kinetic energy of a gas. inversely directly not disproportionally

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 oxygen atoms are there in 3.15 moles of hcl manganese (iv) oxide, mno2