<span>Water is a polar molecule. If a solute dissolved in water is polar molecule, it will dissolve in water. If a solute dissolved in water is non-polar like oil it will not dissolve in water. Polar dissolves in polar.</span>
        
             
        
        
        
3.74×
3.74 × molecules of propane were in the erlenmeyer flask.
 molecules of propane were in the erlenmeyer flask.
number of moles of propane can be calculated as moles of propane.
mass of propane =  0.274 g
molar mass of propane = 44.1
So this gives us the value of 6.21× moles of propane
 moles of propane
 No one mole of propane As a 6.0-2 × 
so, 6.21 × × 6. 022 × 10^23
 × 6. 022 × 10^23 
= 3.74 ×
Therefore, molecules of propane were in the erlenmeyer flask is found to be 3.74 ×
<h3>What is erlenmeyer flask?</h3>
- A laboratory flask with a flat bottom, a conical body, and a cylindrical neck is known as an Erlenmeyer flask, sometimes known as a conical flask or a titration flask. 
- It bears the name Emil Erlenmeyer after the German chemist.
<h3>What purpose does an Erlenmeyer flask serve?</h3>
- Liquids are contained in Erlenmeyer flasks, which are also used for mixing, heating, chilling, incubating, filtering, storing, and other liquid-handling procedures. 
- For titrations and boiling liquids, their sloped sides and small necks make it possible to whirl the contents without worrying about spills.
To learn more about calculating total molecules visit:
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9.Pubchem 
10.Oxygen 
11. Selenium fluoride
12. Disilicon Hexabromide
13. sulfur tetrachloride
14.Methane
15.diboron silicide
16. Nitrogen trifluoride
PLEASE GIVE ME BRAINLIEST!
        
             
        
        
        
Answer:
The pressure of Cl2 is 1, 55 atm.
Explanation:
 The sum of the partial pressures of the gases that make up a gaseous mixture is equal to the total pressure of said mixture, according to Dalton's law:
P total = P02 + P N2 + P Cl2
P Cl2= P total - P02 - P N2=3,30 atm-1,0 atm -0,75 atm=<em>1,55 atm</em>