Final answer:
The total mass of hydrogen in H₂CO, CH₄, C₆H₁₂0₆, and CO₂ is 2 amu, 4 amu, 12 amu, and 0 amu, respectively, calculated using the molar mass of hydrogen (1 amu per hydrogen atom).
Step-by-step explanation:
The total mass of hydrogen in each of the molecules can be calculated using the molar mass of hydrogen and the number of hydrogen atoms in the molecule.
- In H₂CO, there are 2 hydrogen atoms. As the molar mass of hydrogen is approximately 1 amu, the total mass is 2 amu.
- For CH₄ (methane), there are 4 hydrogen atoms which gives us a total of 4 amu of hydrogen.
- In C₆H₁₂0₆ (glucose), there are 12 hydrogen atoms. This results in a total mass of 12 amu of hydrogen.
- The CO₂ molecule does not contain hydrogen, so its total mass of hydrogen is 0 amu.
It's important to remember that the atomic mass unit (amu) is the standard unit for molecular mass, which allows us to add up the masses of individual atoms to get the total molecular mass.