how to calculate the mass of hydrogen in 150.0 g of ethene
Ethene is C2H4 and not C2H2. Sorry about that. C2H2 is acetylene.
Ethene is C2H2.
%hydrogen in C2H2 is (Mass H/molar mass)*100 = ?
Then 150 x (%H/100) = ?
Ethene has a double bond between the carbons. The formula is C2H4, not C2H2;ethylene's formula is C2H2.
150g/28.05g/mole will give you the number of moles of ethene. Since the ratio between ethene and H2 is 1 to 4, multiply the number of moles of ethene by 4 to get the number of moles of H. Take the number of moles of H and multiply by the molecular weight of H, which is 1.008g/mole.
Ethylene has a triple bond composed of a pi and sigma bonds.
To calculate the mass of hydrogen in 150.0 g of ethene (C2H4), you will need to know the molar mass of ethene and the ratio of hydrogen atoms to ethene molecules.
1. Determine the molar mass of ethene (C2H4):
- The atomic mass of carbon (C) is 12.01 g/mol, and there are 2 carbon atoms in ethene (C2).
- The atomic mass of hydrogen (H) is 1.01 g/mol, and there are 4 hydrogen atoms in ethene (H4).
- Calculate the molar mass of ethene: (2 * 12.01 g/mol) + (4 * 1.01 g/mol) = 28.05 g/mol.
2. Calculate the number of moles of ethene in 150.0 g of ethene:
- Divide the given mass by the molar mass: 150.0 g / 28.05 g/mol = 5.34 mol.
3. Determine the ratio of hydrogen atoms to ethene molecules:
- In the chemical formula for ethene (C2H4), there are 4 hydrogen atoms for every 1 ethene molecule.
4. Calculate the moles of hydrogen in 150.0 g of ethene:
- Multiply the number of moles of ethene by the ratio of hydrogen atoms to ethene molecules: 5.34 mol * 4 mol H / 1 mol C2H4 = 21.36 mol H.
5. Calculate the mass of hydrogen in 150.0 g of ethene:
- Multiply the moles of hydrogen by the molar mass of hydrogen: 21.36 mol H * 1.01 g/mol = 21.56 g H.
Therefore, the mass of hydrogen in 150.0 g of ethene is approximately 21.56 grams.