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Carbon, nitrogen, and water are recycled through ecosystems many times. Which one of these eventually breaks down completely?

Carbon, nitrogen and water are recycled trough ecosystems many times. Of all these nitrogen is eventually broken down completely.

Final Nitrogen

Explanation:

All carbon, nitrogen and water are recycled by the biosphere.

But all of these nitrogen is eventually broken down because there are three bonds are present in nitrogen and these bonds are stronger so cannot be easily broken down.

Option (C) is the correct answer.

Explanation:

It is given that total mass is 1 kg and quality is 50%. Hence, the weight of liquid and vapor is 0.5 kg each.

Since, temperature is given as = (25 + 273.15) K = 298.15 K

Molecular mass of water = 18 g/mol

Therefore, calculate the number of moles of water as follows.

                No. of moles of water vapor =

                                       =          (as 1 kg = 1000 g, so 0.5 kg = = 500 g)

                                       = 27.78 mol

This will also be equal to the number of moles of liquid water present.

According to the steam tables, water exists in its saturated state at at a pressure or 3170 Pa.

Hence, on assuming ideal gas behavior of the vapor the equation will be as follows.

                                             =

                                             = 21.72

Whereas we will calculate the volume of liquid water as follows.

                        Volume =

                                      =

                                       = 0.5 L

As 1 L = 0.001 . So, 0.5 L = 0.0005 .

Therefore,     total volume =  Volume of vapor + volume of liquid water

                                           = 21.72 + 0.0005

                                           = 21.7205

                                           = 22 (approx)

Thus, we can conclude that volume occupied by the water (vapor liquid) is 22 .