Answer:
1. molar mass of h2co3: 62.03 g
2. total molar mass for hydrogen atoms: 2.02 g
3. total molar mass for carbon atoms: 12.01 g
4. total molar mass for oxygen atoms: 48.00 g
5. hydrogen percent composition: 3.3%
6. oxygen percent composition: 77.4%
Explanation:
1. 1.01+1.01+12.01+16.00+16.00+16.00= 62.03
2. 1.01×2= 2.02
3. 12.01×1= 12.01
4. 16.00×3= 48.00
5. (2.02/62.03)×100= 3.3%
6. (48.00/62.03)×100= 77.4%