The answer is 0 if im right
        
             
        
        
        
Answer:
Higher the frequency, the higher the energy
Explanation:
Please help me by marking me brainliest. I'm really close :)
 
        
                    
             
        
        
        
Answer:
D.
Explanation:
D is the correct answer because, in aqueous solution, solvent is water and solute (in this example carbon dioxide CO₂) is a substance dissolved in water. The amount of solute that can be dissolved in a solvent depends of chemical composition, temperature and pressure
 
        
                    
             
        
        
        
Answer:
cold
Warm air lifted over a moving cold air mass will produce a _____ front.	
 
        
                    
             
        
        
        
Answer:
The enthalpy change during the reaction is -199. kJ/mol.
Explanation:

Mass of solution = m
Volume of solution = 100.0 mL
Density of solution = d = 1.00 g/mL

First we have to calculate the heat gained by the solution in coffee-cup calorimeter.

where,
m = mass of solution = 100 g
q = heat gained = ?
c = specific heat = 
 = final temperature = 
 = initial temperature = 
Now put all the given values in the above formula, we get:


Now we have to calculate the enthalpy change during the reaction.

where,
 = enthalpy change = ?
q = heat gained = 2.242 kJ
n = number of moles fructose = 

Therefore, the enthalpy change during the reaction is -199. kJ/mol.