The electromagnetic force is attractive for unlike charges and repulsive for like charges
        
                    
             
        
        
        
We have that the molecular weight (3sf) of the compound (g/mol)

From the question we are told 
A solution made by mixing 20.0 g of a non-volatile compound with 125 mL of water at 25°C has a vapor pressure of 22.67 torr. What is the molecular weight (3sf) of the compound (g/mol).
Generally the equation for the Rouault's law is mathematically given as
P=P_0 N

Therefore
 The molecular weight (3sf) of the compound (g/mol)
 
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Answer:
NH3
Explanation:
2NH3(aq)+CO2(aq)→CH4N2O(aq)+H2O(l)
So for two moles of NH3 we need one mole of CO2. So let's count moles for each reagent.
n(NH3)=m(NH3)/M(NH3)=135700/17,03=7968.29 mol
n(CO2)=m(CO2)/M(CO2)=211400/44.01=4803.45 mol
From equation we have to divide n(NH3) by 2 because we need two equivalent per one CO2. That will be 3984.145. So the limiting agent is NH3 because it's not enough of it to react with all CO2
 
        
             
        
        
        
Answer: 9.09 %
Explanation:
To calculate the  percentage concentration by volume, we use the formula:
 
Volume of ethanol (solute) = 30 ml
Volume of water (solvent) = 300 ml 
Volume of solution= volume of solute + volume of solution = 30+ 300 = 330 ml
Putting values in above equation, we get:
 
Hence, the volume percent of solution will be 9.09 %.