Describe how you might prepare disodium phosphate given a solution of phosphuric acid, 0.500 molar and a solution of sodium hydroxide base, 0.500 molar​

your answer is a. the enthalpy of formation for a pure element in its standard state is always positive.

i don,t know so just answer mine

answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;

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.