No the density of water doesn't change
One Nitrogen and three iodine's react to form two nitrogen triiodides.
Answer: 12.21
Explanation:
It is well known that the sum of pH + pOH = 14.
To get the pOH of the solution, we subtract 1.79 from 14.
pH + pOH = 14
pOH = 14 - 1.79 = 12.21
pOH = 12.21
Answer:
Find the list below.
Explanation:
Good Use
1. Manufacture of substances: Virtually all manufactured substances incorporate water during their production.
2. Provision of electricity: Water in dams have been channeled to provide thermal energy.
3. Provision of transportation: Ships, boats, and canoes provide a means of transporting humans and goods to other places using water as a medium.
4. Provision of recreation: Swimming in pools are recreational activities.
5. Cleaning surfaces and the environment: Dust and other debris are removed from our homes and environments with the help of water.
6. Provision of food: The fishes obtained from water bodies serve as a food source.
Bad Use
1. Refuse dumping ground: Most industries and homes channel waste products into water bodies and this can be dangerous to aquatic lives.
2. Channels for oil spillage: Oil spillage is another environmental hazard caused by humans on water bodies.
Answer:
The change in entropy is -1.66 kJ/K.
Explanation:
Heat of vaporization of acetic acid = 41.0 kJ/mol
Heat of condensation of acetic acid = -41.0 kJ/mol
Mass of acetic acid = 954 g
Condensing temperature of acetic acid =118.1 °C = 391.25 K
Moles of acetic acid = ![\frac{954 g}{60.05 g/mol}=15.8867 mol](https://tex.z-dn.net/?f=%5Cfrac%7B954%20g%7D%7B60.05%20g%2Fmol%7D%3D15.8867%20mol)
Heat evolved during condensation of 15.8867 moles of acetic acid:
![-41.0 kJ/mol\times 15.8867 mol=-651.35 kJ](https://tex.z-dn.net/?f=%20-41.0%20kJ%2Fmol%5Ctimes%2015.8867%20mol%3D-651.35%20kJ)
Entropy change = ΔS = ![\frac{Heat}{Temperature}](https://tex.z-dn.net/?f=%5Cfrac%7BHeat%7D%7BTemperature%7D)
![\Delta S=\frac{-651.35 kJ}{391.25 K}=-1.664 kJ/K\approx -1.66 kJ/K](https://tex.z-dn.net/?f=%5CDelta%20S%3D%5Cfrac%7B-651.35%20kJ%7D%7B391.25%20K%7D%3D-1.664%20kJ%2FK%5Capprox%20-1.66%20kJ%2FK)
The change in entropy is -1.66 kJ/K.