Amixture of 1.00g h2 and 1.00g he is placed in a 1.00l container at 27 celcius calculate the partial pressure of each gas and the total pressure

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e