A mixture of gases in a container has a pressure of 63.2 atm. If the pressure of CO2 gas is 27.8 atm and the pressure of O2 gas is 31.7 atm, what is the pressure of CH4 gas.

"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"

they are made of gases.

they have a spherical shape.

they make energy through fusion.

hi my dude or dudette