For the decomposition of calcium carbonate, consider the following thermodynamic data (due to variations in thermodynamic values for different sources, be sure to use the given values in calculating your answer.): δh∘rxn 178.5kj/mol δs∘rxn 161.0j/(mol⋅k) calculate the temperature in kelvins above which this reaction is spontaneous.

Answer : The temperature in kelvins is,

Explanation : Given,

= 178.5 KJ/mole = 178500 J/mole

= 161.0 J/mole.K

Gibbs–Helmholtz equation is :

As per question the reaction is spontaneous that means the value of is negative or we can say that the value of is less than zero.

The above expression will be:

Now put all the given values in this expression, we get :

Therefore, the temperature in kelvins is,

elements

explanation:

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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.