The bad smelling element is Sulfur, which smells like rotting eggs.
        
             
        
        
        
B KOH
I would say this is the base for the compound substance
        
             
        
        
        
A. They are the most destructive earthquake waves.
D. They can move in a rolling pattern through rock, like an ocean  wave.
Explanation:
Surface waves are seismic waves that cause the most destruction during an earthquake. 
Rayleigh waves are known to cause rolling pattern of rocks just like an ocean waves. 
- Seismic waves are elastic waves that notably transmits energy. 
- They usually accompany earthquakes. 
- There are two broad categories of these waves. 
- Surface and body waves. 
- Seismic surface waves are low frequency and long wavelength waves. 
- They travel very close to the surface. 
- They are made up of Love and Rayleigh waves. 
- Love waves travels laterally in a horizontal fashion. 
- Rayleigh waves rolls like ocean waves in the ground. 
- The bulk of the destruction caused during an earthquakes is due to these waves. 
- They are the last waves to arrive a seismic station 
learn more: 
Seismograph brainly.com/question/11292835
#learnwithBrainly
 
        
             
        
        
        
Answer : When we consider the atmospheric pressure as 1 atm then according to the ideal gas equation we can find out the molar mass of any unknown by this formula ;
PV=nRT
so if the pressure increases than 1 atm then we can see from the above equation that it will result in greater value for the number of moles (n) in the above equation.
While n = m/M where m is mass of the unknown in g and M is molecular mass.
So, if pressure is higher then it will result in molar mass of unknown which is much smaller.
        
             
        
        
        
Answer:
D. Ionic compound
Explanation:
Just based on my opinion
Correct me if I'm wrong tnx:<