Answer:

Explanation:
Hello there!
In this case, sine the solution of this problem require the application of the Raoult's law, assuming heptane is a nonvolatile solute, so we can write:

Thus, we first calculate the mole fraction of chloroform, by using the given masses and molar masses as shown below:

Therefore, the partial pressure of chloroform turns out to be:

Regards!
Mass......................
I believe this force would be called pressure!
Answer:
two atom of hydrogen,two atom of oxygen
The scale used to measure the basicity of a substance is called the pH Scale. A base which when measured on a pH scale obtains a value greater than 7 but less than or equal to 10 is weak base and from 10-14 is strong base
<h3>Meaning of Base and basicity</h3>
A base is any substance that has the ability to accept hydrogen ion in water and also netralize an acid when mixed together.
Basicity is an attribute associated with the pH scale measurement of values above 7 to 14.
Basicity increases on the scale from 7 to 14. On the pH scale 7 is neutral. So the higher we go the more basic a solution becomes until it gets to its highest point which is 14.
In conclusion, The scale used to measure the basicity of a substance is called the pH Scale. A base which when measured on a pH scale obtains a value greater than 7 but less than or equal to 10 is weak base and from 10-14 is strong base
Learn more about basicity : brainly.com/question/172153
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