Write the coefficients for a balanced chemical equation for this chemical reaction: Iron mixes with water to form hydrogen gas and iron III oxide.

Acylinder, with a piston pressing down with a constant pressure, is filled with 2.00 moles of a gas (n1), and its volume is 50.0 l (v1). if 0.400 mole of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside the cylinder?