Which of these is a spectator ion in the chemical reaction shown below? 2NaOH(aq) + CuCl₂ →2NaCl(aq) + Cu(OH)₂(s) a. Cu
b. Cl and Na
c. Na
d. OH

please help me, its for my chemistry benchmark and its my last question!!

the potential energy of the reactants is 200j.

from the energy diagram, the energy of the product formed is 350j; this means that, this reaction is an endothermic reaction, because it absorbs energy from its environment.

the temperature of the gas, in k, not celsius.

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.