Table salt, NaCl(s), and sugar, C12H22O11(s), are accidentally mixed. A 4.00-g sample is burned, and 3.30 g of CO2(g) is produced. What was the mass percentage of the table salt in the mixture?
Convert mass CO2 to mass C6H12O6.
3.30g CO2 x (molar mass C6H12O6/6CO2) = ?g C6H12O6.
Mass NaCl = 4.00 - ?g C6H12O6 = g NaCl
%NaCl = (g NaCl/4.00)*100 = ?
To find the mass percentage of table salt (NaCl) in the mixture, we need to determine the amount of NaCl in the 4.00 g sample that produced 3.30 g of CO2.
Here's how you can calculate it step by step:
Step 1: Find the amount of CO2 produced.
Given that 3.30 g of CO2 is produced, we can assume that the molar mass of CO2 is 44.01 g/mol. Using this information, we can calculate the number of moles of CO2 produced:
moles of CO2 = mass of CO2 / molar mass of CO2
moles of CO2 = 3.30 g / 44.01 g/mol
Step 2: Determine the number of moles of C in CO2.
Since CO2 contains one atom of carbon (C) per molecule, the number of moles of C is the same as the number of moles of CO2.
Step 3: Calculate the molar mass of C.
The molar mass of carbon (C) is 12.01 g/mol.
Step 4: Determine the mass of carbon (C).
mass of C = moles of C x molar mass of C
Step 5: Calculate the mass of sugar (C12H22O11).
The molar mass of sugar (C12H22O11) can be calculated as:
molar mass of sugar = (12 x molar mass of C) + (22 x molar mass of H) + (11 x molar mass of O)
Step 6: Determine the mass of NaCl in the mixture.
mass of NaCl = mass of the sample - mass of sugar
Step 7: Calculate the mass percentage of NaCl.
mass percentage of NaCl = (mass of NaCl / mass of the sample) x 100
By following these steps, you should be able to find the mass percentage of table salt (NaCl) in the mixture.