Explanation:
Chemical bond refers to the forces holding atoms together to form molecules and solids. This force is of an electric nature, and the attraction between electrons of one atom to the nucleus of another atom contributes to what is known as chemical bonds.
Answer:
1383.34 kJ/mol is the energy released on combustion of the organic compound.
Explanation:
Mass of an organic compound = 0.6654 g
Molar mass of organic compound = 46.07 g/mol
Moles of an organic compound = ![\frac{0.6654 g}{46.07 g/mol}=0.01444 mol](https://tex.z-dn.net/?f=%5Cfrac%7B0.6654%20g%7D%7B46.07%20g%2Fmol%7D%3D0.01444%20mol)
Let heat evolved during burning of 0.6654 grams of an organic compound be -Q.
Heat absorbed by calorimeter = Q' = -Q
The total heat capacity of the calorimeter all its contents = C
C = 3576 J/°C
Change in temperature of the calorimeter =
ΔT = 30.589°C - 25.000°C = 5.589°C
![Q'=C\times \Delta T](https://tex.z-dn.net/?f=Q%27%3DC%5Ctimes%20%5CDelta%20T)
![Q'=3576 J/^oC\times 5.589^oC=19,975.536 J=19.975 kJ](https://tex.z-dn.net/?f=Q%27%3D3576%20J%2F%5EoC%5Ctimes%205.589%5EoC%3D19%2C975.536%20J%3D19.975%20kJ)
Q' = 19.975 kJ
Q = -19.975 kJ (negative sign; energy released)
0.01444 moles of an organic compound gives 19.975 kilo Joule.
The 1 mole of an organic compound will give : ![\Delta H_{comb}](https://tex.z-dn.net/?f=%5CDelta%20H_%7Bcomb%7D)
![\Delta H_{comb}=\frac{-19.975 kilo Joule}{0.01444 mol}](https://tex.z-dn.net/?f=%5CDelta%20H_%7Bcomb%7D%3D%5Cfrac%7B-19.975%20kilo%20Joule%7D%7B0.01444%20mol%7D)
![=-1383.34 kJ/mol](https://tex.z-dn.net/?f=%3D-1383.34%20kJ%2Fmol)
Answer:
3
Explanation:
Use the rise over run method. plot the necessary points first in the x and y axis
Lamps light up by electricity. Although, i'm sure you knew that by now. When a light bulb connects to an electric power supply, an electric current flows between the two metal contacts. As electricity flows between the wires and filament, the filament heats up. The filaments begin to emit photons, which are essentially small packets of light.
Hope this helps!