What mass of carbon dioxide can be produced from 4 moles of sodium bicarbonate according to the following unbalanced reaction,

NaHCO3 --> Na2CO3 + CO2 + H2O?

Balance the equation.

Then use the coefficients in the balanced equation to convert mols NaHCO3 to mols CO2.
Finally, convert mols CO2 to grams by g = mols x molar mass.

398g\m

To determine the mass of carbon dioxide produced from 4 moles of sodium bicarbonate (NaHCO3) using the unbalanced reaction, you need to follow a few steps:

Step 1: Write the balanced chemical equation.
First, you need to balance the equation to determine the coefficients of each compound involved. The balanced equation for the reaction is:

2 NaHCO3 → Na2CO3 + CO2 + H2O

Step 2: Determine the molar ratio.
Next, you need to determine the molar ratio between NaHCO3 and CO2. From the balanced equation, you can see that for every 2 moles of NaHCO3, 1 mole of CO2 is produced.

So, the molar ratio is 2 moles NaHCO3 : 1 mole CO2.

Step 3: Perform the calculation.
To find the mass of CO2 produced from 4 moles of NaHCO3, you need to use the molar mass of CO2, which is approximately 44 g/mol.

Mass of CO2 = (moles of NaHCO3) × (molar mass of CO2)
= 4 moles × 44 g/mol
= 176 g

Therefore, the mass of carbon dioxide produced from 4 moles of sodium bicarbonate is 176 grams.