Final answer:
To generate 0.261 mol CO2, you would need 19.23 g of NaHCO3.
Step-by-step explanation:
To generate 0.261 mol of CO2, we can use the balanced equation 2 NaHCO3(aq) + H2SO4(aq) → 2 CO2(g) + Na2SO4(aq) + 2 H2O(l). From the equation, we can see that 2 mol of NaHCO3 produces 2 mol of CO2. Therefore, to produce 0.261 mol of CO2, we would need an equal moles of NaHCO3. Hence, the mass of NaHCO3 needed is equal to its molar mass multiplied by the number of moles, which is 0.261 mol x (22.99 g/mol + 1.01 g/mol + 3 x 16.00 g/mol) = 19.23 g.