The chromosphere is the third and the lowermost layer of the sun and appears bright red. This chromosphere region is visible only during the total solar eclipse. Thus, option B is correct.
<h3>What is a solar eclipse?</h3>
A total solar eclipse is an event in which the new moon is in between the Earth and the Sun resulting in the formation of the dark shadow on the Earth's surface.
During this eclipse, the chromosphere region of the sun is visible as it was hidden by the photosphere before the eclipse. It shines bright red and yellow as the spectral line of the hydrogen alpha is emitted.
Therefore, option B. the chromosphere region is visible only during the total solar eclipse.
Learn more about the eclipse here:
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Answer:
No, no precipitate is formed.
Explanation:
Hello there!
In this case, since the reaction between silver nitrate and sodium acetate is:
In such a way, we can calculate the concentration of silver and acetate ions in the solution as shown below, and considering that the final total volume is 50.00 mL or 0.0500 L:
![[Ag^+]=\frac{20.00mL*0.077M}{50.00mL}=0.0308M](https://tex.z-dn.net/?f=%5BAg%5E%2B%5D%3D%5Cfrac%7B20.00mL%2A0.077M%7D%7B50.00mL%7D%3D0.0308M)
![[C_2H_3O_2^-]=\frac{30.00mL*0.043M}{50.00mL}=0.0258M](https://tex.z-dn.net/?f=%5BC_2H_3O_2%5E-%5D%3D%5Cfrac%7B30.00mL%2A0.043M%7D%7B50.00mL%7D%3D0.0258M)
In such a way, we can calculate the precipitation quotient by:
![Q=[Ag^+][C_2H_3O_2^-]=0.0308*0.0258=7.95x10^{-4}](https://tex.z-dn.net/?f=Q%3D%5BAg%5E%2B%5D%5BC_2H_3O_2%5E-%5D%3D0.0308%2A0.0258%3D7.95x10%5E%7B-4%7D)
Which is smaller than Ksp and meaning that the precipitation does not occur.
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Answer:
Explanation:
Freezing point depression is the phenomena that describes why adding a solute to a solvent results in the lowering of the freezing point of the solvent. Adding solute to a solvent will essentially dilute the solvent molecules
Answer:
STP conditions imply a temperature of 273.15 K and a pressure of 100 kPa. When tose conditions are met, 1 mole of any ideal gas will have a volume of 22.7 L. So, if 1 mole occupies a volume of 22.7 L, 2 moles will occupy a volume twice as big. Likewise, 0.5 moles will occupy half the volume 1 mole occupies. Assuming that the gas is at standard temperature and pressure (STP), one mole of any gas occupies 22.4 L . This means the number of moles of O2 is 222.4=0.089 mol .
Explanation:
