Tums is added to 30.0 of 0.400m of HCL , how many grams of CO2gas are produced?

You don't provide enough information. moles HCl = M x L (is that M or m?).

To determine the number of grams of CO2 gas produced when Tums is added to HCl, we need to first understand the chemical reaction that takes place between these two substances.

The main active ingredient in Tums is calcium carbonate (CaCO3), while HCl stands for hydrochloric acid. The reaction between calcium carbonate and hydrochloric acid can be represented by the following equation:

CaCO3 + 2HCl -> CaCl2 + CO2 + H2O

According to the balanced equation, one mole of calcium carbonate reacts with two moles of hydrochloric acid to produce one mole of calcium chloride, one mole of carbon dioxide, and one mole of water.

Now, let's calculate the number of moles of HCl present in 30.0 mL of 0.400 M HCl solution:

30.0 mL (0.400 mol/L) = 12.0 mmol (millimoles) = 0.0120 moles

Since the stoichiometric ratio between HCl and CO2 is 2:1, 0.0120 moles of HCl will produce half the mole amount of CO2. Therefore, the number of moles of CO2 gas produced is:

0.0120 moles / 2 = 0.0060 moles

Finally, we can convert moles of CO2 to grams by multiplying by the molar mass of CO2, which is approximately 44.01 g/mol:

0.0060 moles * 44.01 g/mol = 0.2646 grams of CO2 gas

Therefore, when Tums is added to 30.0 mL of 0.400 M HCl, approximately 0.2646 grams of CO2 gas are produced.