The initial volume of gas would be 8L.
initiwl volume= 9 L
using charles law for constant pressure
V1= (6/100) x 150 = 9
The electrons are moving around the nucleus in circular orbits. When an electron absorbed extra energy from an outside source (flame), the electron moves to a higher orbit. Colored light is emitted when the electron falls back to a lower orbit. This light is the difference between the energies of the two orbits involved.
the answer is Mol. concentration/time