<u>Answer:</u> 1 mole of methane has the greatest mass of hydrogen.
<u>Explanation:</u>
To calculate the mass of hydrogen, we use the equation:
.....(1)
- <u>For 1 mole of
</u>
In 1 mole of methane, 1 mole of carbon atom and 4 moles of hydrogen atoms are there.
Molar mass of hydrogen = 1 g/mol
Moles of hydrogen = 4 moles
Putting values in equation 1, we get:
![4mol=\frac{\text{Mass of hydrogen}}{1g/mol}\\\\\text{Mass of hydrogen}=4g](https://tex.z-dn.net/?f=4mol%3D%5Cfrac%7B%5Ctext%7BMass%20of%20hydrogen%7D%7D%7B1g%2Fmol%7D%5C%5C%5C%5C%5Ctext%7BMass%20of%20hydrogen%7D%3D4g)
The mass of hydrogen in 1 mole of
is 4 g
- <u>For 0.6 mole of
</u>
In 1 mole of benzene, 6 moles of carbon atoms and 6 moles of hydrogen atoms are there.
So, in 0.6 moles of benzene, (6 × 0.6) = 3.6 moles of carbon atoms and (6 × 0.6) = 3.6 moles of hydrogen atoms are there.
Molar mass of hydrogen = 1 g/mol
Moles of hydrogen = 3.6 moles
Putting values in equation 1, we get:
![3.6mol=\frac{\text{Mass of hydrogen}}{1g/mol}\\\\\text{Mass of hydrogen}=3.6g](https://tex.z-dn.net/?f=3.6mol%3D%5Cfrac%7B%5Ctext%7BMass%20of%20hydrogen%7D%7D%7B1g%2Fmol%7D%5C%5C%5C%5C%5Ctext%7BMass%20of%20hydrogen%7D%3D3.6g)
The mass of hydrogen in 0.6 mole of
is 3.6 g
- <u>For 0.4 mole of
</u>
In 1 mole of
, 3 moles of carbon atom and 8 moles of hydrogen atoms are there.
So, in 0.4 moles of
, (3 × 0.4) = 1.2 moles of carbon atoms and (8 × 0.4) = 3.2 moles of hydrogen atoms are there.
Molar mass of hydrogen = 1 g/mol
Moles of hydrogen = 3.2 moles
Putting values in equation 1, we get:
![3.2mol=\frac{\text{Mass of hydrogen}}{1g/mol}\\\\\text{Mass of hydrogen}=3.2g](https://tex.z-dn.net/?f=3.2mol%3D%5Cfrac%7B%5Ctext%7BMass%20of%20hydrogen%7D%7D%7B1g%2Fmol%7D%5C%5C%5C%5C%5Ctext%7BMass%20of%20hydrogen%7D%3D3.2g)
The mass of hydrogen in 0.4 mole of
is 3.2 g
Hence, 1 mole of methane has the greatest mass of hydrogen.