Explain how many liters of co2 gas can form at stp

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the calcium carbonate in limestone reacts with a HCl solution to produce a calcium chloride solution, carbon dioxide, and water. CaCO3(s) + 2HCl(aq) > CaCl2(aq) +H2O(l) +CO2(g). a) how many milliliters of a .200 M HCl solution can react with 8.25 g of CaCO3? b) how many liters of CO2 gas can form at STP when 15.5 mL of a 3.00 M HCl solution reacts with excess CaCO3? c)what is the molarity of a HCl solution if the reaction of 200 mL of the HCl solution with excess CaCO3 produces 12.0 L of CO2 gas at 725 mmHg and 18 degrees C

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