Which of the following describes the correct procedure to prepare 2.0 L of 0.50 M NH Br(aq)? (The molar mass of NH, Br is 98 g/mol.)
Choose 1
BO
Add 49 g of NH Br(s) to 2.0 L of distilled water.
Add 98 g of NH Br(s) to 2.0 L of distilled water.
MY
Col
Dissolve 49 g of NH Br(s) in a small amount of distilled water and dilute to 2.0 L.
SA
Dissolve 98 g of NH Br(s) in a small amount of distilled water and dilute to 2.0 L.

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.