4. at a very high temperature, manganese is isolated from its ore, manganomanganic oxide, via the following balanced equation: 3 mn304(s) + 8 al(s) + 4 al2o3(s) + 9 mn(s) a. how many manganese atoms are liberated if 54.8 moles of mn304 react with excess aluminum. b. how many moles of aluminum oxide are made if 3580 g of manganomanganic oxide are consumed? c. how many moles of manganomanganic oxide will react with 5.33 x 1025 atoms of aluminum? d. if 4.37 moles of aluminum are consumed, how many molecules of aluminum oxide are produced?

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.