Question

Molar mass c3h8

Total molar mass for carbon atoms
Total molar mass for hydrogen atoms
Carbon percent composition
Hydrogen percent composition

Answer 1

The molar mass of C3H8 is 44.094 g/mol. The carbon percent composition is 81.72% and the hydrogen percent composition is 18.28%.

Step-by-step explanation:

The molar mass of C3H8 (propane) can be calculated by adding up the atomic masses of the atoms in the molecule. Carbon has a molar mass of 12.01 g/mol, and there are 3 carbon atoms in C3H8, so the total molar mass for carbon atoms is 12.01 g/mol x 3 = 36.03 g/mol. Hydrogen has a molar mass of 1.008 g/mol, and there are 8 hydrogen atoms in C3H8, so the total molar mass for hydrogen atoms is 1.008 g/mol x 8 = 8.064 g/mol.

The percent composition can be calculated by dividing the molar mass for each element by the total molar mass of C3H8. The carbon percent composition is (36.03 g/mol / 44.094 g/mol) x 100% = 81.72%. The hydrogen percent composition is (8.064 g/mol / 44.094 g/mol) x 100% = 18.28%.

Answer 2

1. 44.11 g

2. 36.03 g

3. 8.08 g

4. 81.7%

5. 18.3%

Step-by-step explanation:

1. 12.01+12.01+12.01+1.01+1.01+1.01+1.01+1.01+1.01+1.01+1.01=44.11

2. 12.01×3= 36.03

3. 1.01×8= 8.08

4.(36.03/44.11)×100= 81.7%

5. (8.08/44.11)×100= 18.3%