Final answer:
The mass of carbon dioxide that contains the same number of atoms as 10.0 g of H2SO3 is 18.64 g.
Step-by-step explanation:
The molar mass of H2SO3 is 82.07 g/mol, while the molar mass of CO2 is 44.01 g/mol. To find the mass of CO2 that contains the same number of atoms as 10.0 g of H2SO3, we need to compare the mole ratio of H2SO3 to CO2. The mole ratio is determined by dividing the molar mass of one substance by the molar mass of the other substance. In this case, the mole ratio is 82.07 g/mol (H2SO3) / 44.01 g/mol (CO2) = 1.864. Therefore, 10.0 g of H2SO3 is equivalent to 1.864 x 10.0 g = 18.64 g of CO2.