5a). Sodium reacts with excess oxygen to form sodium peroxide, Na,0,. 2Na + 02 → Na,02 Calculate the maximum mass of sodium peroxide formed when 4.60 g of sodium is burnt in excess oxygen. (A, values: Na = 23.0, 0 = 16.0) 5b). Tin oxide (IV) is reduced to tin by carbon. Carbon monoxide is also formed. Sno2 + 20 > Sn + 2C0 Calculate the mass of carbon that exactly reacts with 14.0 g of tin(IV) oxide. Give your answer to 3 significant figures. (A, values: C = 12.0,0 = 16.0, Sn =118.7)

increased stability in the completion of fluorine's outer shell.

idk what is it? is this a question that you know the answer or u dont

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.