To determine if it was safe for Kacy to clean up the mess, we need to know the concentration of the hydrochloric acid solution and the stoichiometry of the reaction between hydrochloric acid and sodium bicarbonate.
The balanced chemical equation for the reaction between hydrochloric acid (HCl) and sodium bicarbonate (NaHCO3) is:
HCl + NaHCO3 -> NaCl + CO2 + H2O
From the balanced equation, we can see that one mole of HCl reacts with one mole of NaHCO3 to produce one mole of NaCl, one mole of CO2, and one mole of H2O.
Therefore, we need to know the concentration of the hydrochloric acid solution (in units of moles per liter) to determine the number of moles of HCl in the solution. We also need to know the amount of sodium bicarbonate in grams and convert it to moles to determine the limiting reagent in the reaction.
Once we have this information, we can calculate the amount of product (NaCl) formed and determine if it was safe for Kacy to clean up the mess based on any potential hazards posed by the reaction.