Assuming all gases are at the same temperature and pressure, how many milliliters of hydrogen iodide are produced from 155 of ?
155 WHAT?
And what do we start with?
To determine the volume of hydrogen iodide produced, we need to know the balanced chemical equation for the reaction between the given substance (which seems to be missing from your question) and hydrogen iodide. The balanced chemical equation will specify the mole ratio between the substances involved in the reaction.
Once we have the balanced equation, we can use stoichiometry to calculate the volume of hydrogen iodide produced. Stoichiometry is a mathematical relationship between the coefficients of reactants and products in a balanced chemical equation.
However, since the substance reacting with hydrogen iodide is missing from your question, I cannot provide an accurate response. Please provide the complete chemical equation, and I'll be happy to guide you through the process of finding the solution.