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OLEGan [10]
3 years ago
5

a weather balloon contains 8.80 moles of helium at a ppressure of 0.992 atm and a temperature os 25 C at ground level. What is t

he volume of the balloon under these conditions?
Chemistry
1 answer:
djverab [1.8K]3 years ago
7 0
We can use the ideal gas law equation to find the volume of the balloon.
PV = nRT 
where 
P - pressure - 0.992 atm x 101 325 Pa/atm = 100 514 Pa
V - volume 
n - number of moles - 8.80 mol 
R - universal gas constant  - 8.314 Jmol⁻¹K⁻¹
T - temperature in kelvin - 25 °C + 273 = 298 K
Substituting these values in the equation 
100 514 Pa x V = 8.80 mol x  8.314 Jmol⁻¹K⁻¹ x 298 K
V = 217 L
volume of balloon is 217 L
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5 0
3 years ago
What is the pressure of a fixed volume of hydrogen gas at 38.8°C if it has a pressure of 1.36 atm at 15.0°C?
Rainbow [258]
Hello There! ^_^

Your question: What is the pressure of a fixed volume of hydrogen gas at 38.8°C if it has a pressure of 1.36 atm at 15.0°C..?

Your answer: P1/ T1= P2/ T2
                    
                     Change C to Kelvin
   
                     273+ C= K
               
                     38.3+ 273= 311K
                      
                      15.0+ 273= 288K
                       
                       2.38/ 288= P2/ 311.3
                          
                        740.894= 288 (P2)
                        
                         P2= 2.57 atm.


 Thus, you got you answer!

  Hope this helps!





  

       



    

 

  






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<span>0.5035 so go with .50 moles.
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