#4 . Thallium-201 has a half life of 73 hours. If 4.0 mg of thallium-201 disintegrates over a period of 6 days and 2 hours how many mg of thallium will remain

thats how its supposed to be

elements make up everything, and they combine to make compounds.

the answer is c

give me abc and i will get it for u.

a. energy is absorbed in the reaction.

if in a given reaction the energy of products is greater than the energy of reactants it means that reaction is endothermic and during the reaction, the energy is absorbed by reactants. in an endothermic reaction, the products have more stored chemical energy than the reactants. and in this reaction the reactants are more stable than products before the compounds with less energy are always more stable.