[03.01]Victoria is studying the periodic table of elements and notices that several trends exist. Which of the following stateme
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<u>Answer:</u> The vapor pressure of the solution is 43.55 mmHg
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
.....(1)
- <u>For water:</u>
Given mass of water = 35.0 g
Molar mass of water = 18 g/mol
Putting values in equation 1, we get:
- <u>For ethyl alcohol:</u>
Given mass of ethyl alcohol = 100.0 g
Molar mass of ethyl alcohol = 46 g/mol
Putting values in equation 1, we get:
Total moles of solution = [1.944 = 2.174] moles = 4.118 moles
- Mole fraction of a substance is given by:
<u>For water:</u>
<u>For ethyl alcohol:</u>
Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.
To calculate the vapor pressure of the solution, we use the law given by Dalton, which is:
Or,
We are given:
Vapor pressure of water = 23.8 mmHg
Vapor pressure of ethyl alcohol = 61.2 mmHg
Putting values in above equation, we get:
Hence, the vapor pressure of the solution is 43.55 mmHg
Answer:- There are 32 valence electrons and it's tetrahedral in shape.
Explanations:- Atomic number of carbon is 6 and it's electron configuration is . It has 4 electrons in the outer most shell means it has 4 valence electrons.
Atomic number of Br is 35 and it's electron configuration is . It has 7 electrons in the outer most shell(2 in 4s and 5 in 4p) .
There is one C and four Br in the given compound. So, total number of valence electrons = 4+4(7) = 4+28 = 32
Four Br atoms are bonded to the central carbon atom and also there isn't any lone pair present on carbon. It makes it tetrahedral.