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

Answer 1

The correct response is: The container holding the gases must be at standard temperature and pressure.

The conversion factor of 22.7 L/mol applies to gases at standard temperature and pressure (STP), defined as a temperature of 0 degrees Celsius (273.15 K) and a pressure of 1 atmosphere (atm). At these conditions, one mole of an ideal gas occupies approximately 22.7 liters.