Concerning the disposal of materials at the end of the experiment, which methods are safe? check all that apply.
1. dump the acids and bases down the drain so they can be combined with sewer water.
2. dispose of ph paper in the trash.
3. dump the cabbage indicator solution down the drain.
4. ask your teacher to neutralize the acids and bases before disposal.
2, 3, 4.

the formula for the conversion of temperature from degree celsius to kelvin is:

the sample of water at is converted to kelvin temperature by using the above formula as:

on comparing the two samples of water at or we can say that at and at respectively. the difference between the temperatures of two samples of water is:

hence, one can say that the sample of water at is greater than the sample of water at by .

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.