The volume of the yellow object is not 29cm3 and it is also not 57.4cm3. The white object has a greater mass than the pink object The gray object has a density of 1.349 grams per cubic cm and a mass of 76.9g The density of water is 1.0 grams per cubic cm. If the white object was placed in water, it would sink. The density of water is 1.0 g/cm3. If the yellow object was placed in water, it would float. The density of aluminum is 2.7 g/cm3. The violet object is more dense than aluminum One object has a volume of 57.4 cm3 and a density of 0.5 grams per cubic centimeter. The volume of the violet object is not 11.6 cubic centimeters

the answer would be c

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8

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.