Nonpolar compound would be symmetrical
        
                    
             
        
        
        
Hey there! 
To calculate the percent by mass of the Ca(NO₃)₂ we need to find the total mass first by adding. 
896.92 + 22.63 = 919.55 
In total, the solution is 919.55 grams. 
To find the percent of Ca(NO₃)₂ in the solution, divide the mass of Ca(NO₃)₂ by the total mass and multiply by 100. 
22.63 ÷ 919.55 = 0.0246 
0.0246 x 100 = 2.46 
Ca(NO₃)₂ makes up 2.46% of the solution. 
Hope this helps! 
 
        
             
        
        
        
Answer:
Solvents are substances in which solutes dissolves while solutes are substances that dissolve in solvents and solutions result from mixing solvents and solutes.
Explanation:
- A solvent is a substance such as water that dissolves a solute.
- A solute is a substance that dissolves in a solvent. For example, when sodium chloride dissolves in water, sodium chloride is the solute and water is the solvent.
- A solution, on the other hand, results from combining a solute and a solvent. Therefore, a mixture of water and sodium chloride forms the solution.
 
        
             
        
        
        
The molecular weight of unknown gas : 23.46 g/mol
<h3>Further explanation</h3>
Given
A vessel contains 10% of oxygen and 90% of an unknown gas.
diffuses rate of mixed gas = 86 s 
diffuses rate of O₂ = 75 s
Required
the molecular weight of unknown gas (M)
Solution
The molecular weight of mixed gas :(M O₂=32 g/mol)

Graham's Law :
