One of the steps in processing some metals is smelting. what does smelting do for a metal?

What royal scientist used the 29th day of frozen vapor to encounter elements for mastering new culinary creations?

In which reaction is precipitation occurring?

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?