A reaction mixture initially contains 0.250 mol of Zns and 0.250 mol of O2. After the mixture has reacted completely, how many moles of the excess reactant are left? 2 2ZnS(s) +30g)2ZnO(s)+ 2S0-(g)
(A) 0.083 mol ZnS
(C) 0.125 mol O
(B) 0.167 mol Zns
(D) 0.250 mol O2

Which is mostly likely why many scientists reject the cold fusion theory

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

How many moles of sulfur dioxide are produced when 4.38 moles of oxygen completely react with iron (iv) sulfide