Determine the total pressure of gas mixture the contains oxygen, nitrogen, and helium if the partial pressures of the gases are as follows: PO2=0.197 atm, PN2= 0.461 atm PHe= 0.264

0.922 atm is the total pressure of gas mixture that contains oxygen, nitrogen and helium gases.

Explanation:

Data given:

partial pressure of the oxygen p = 0.197 atm

partial pressure of the nitrogen gas p = 0.461 atm

partial pressure of the helium gas pHe = 0.264

total pressure P in the gas mixture= ?

We know that individual gases exert pressure on the mixture of gases independently. From Dalton's law of pressure it is said that sum of partial pressure of all the gases in the mixture equals its total pressure. So,

Ptotal = p +  p + pHe

putting the values in the mixture:

Ptotal = 0.197 + 0.461+ 0.264

Ptotal = 0.922 atm

Total pressure is 0.922 atm.

petroleum? coal maybe?

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"