What must be true in order to use the conversion factor 22.7 L/mol when performing a stoichiometric calculation involving gases?(1 point)%0D%0AResponses%0D%0A%0D%0AThe container holding the gases must be at standard temperature and pressure.%0D%0AThe container holding the gases must be at standard temperature and pressure.%0D%0A%0D%0AAll of the gases involved must be the same type of element or compound.%0D%0AAll of the gases involved must be the same type of element or compound.%0D%0A%0D%0AThe gases must all be composed of pure elements and not compounds.%0D%0AThe gases must all be composed of pure elements and not compounds.%0D%0A%0D%0AThe coefficients of the gases in the chemical equation must all be the same.

Answer 1

The correct statement that must be true in order to use the conversion factor of 22.7 L/mol when performing stoichiometric calculations involving gases is:

The container holding the gases must be at standard temperature and pressure.

At standard temperature and pressure (STP), which is defined as 0 degrees Celsius (273.15 K) and 1 atmosphere (atm) of pressure, one mole of an ideal gas occupies 22.7 liters. This is the basis for using this conversion factor in stoichiometric calculations.