What is the mass of a sample of acetylene gas (C2H2)that contains 4.44 x 1034 atoms of carbon?
Also, Im not sure how to convert from moles of C to moles of C2H2.
If 10g of NO react with 20g of O2, what is the maximum amount of NO2 that can be produced?
4.44E34 atoms C x (1 mol C/6.02E23 atom C) x (1 mol C2H2/2 mols C) x (26 C2H2/1 mol C2H2) = ?
Note:
4.44E34 atoms C x (1 mol C/6.02E23 atoms C) converts atoms C to mols C atoms.
? x (1 mol C2H2/2 mols C) converts mols C atoms to mols C2H2 molecules.
? x (26 C2H2/1 mol C2H2) converts mols 2CH2 molecules to grams C2H2.
To calculate the mass of a sample of acetylene gas (C2H2) containing a specific number of carbon atoms, you can first determine the number of moles of carbon in the sample and then convert that to the mass.
1. Start by finding the molar mass of carbon (C) by referencing the periodic table. The molar mass of carbon is approximately 12.01 g/mol.
2. Use the Avogadro's number (6.022 x 10^23) to convert the given number of carbon atoms to moles. Divide the given number of atoms (4.44 x 10^34) by Avogadro's number to obtain the number of moles of carbon.
Moles of Carbon = (Number of Atoms of Carbon) / Avogadro's Number
= (4.44 x 10^34) / (6.022 x 10^23)
3. Now, convert the moles of carbon to moles of acetylene (C2H2). From the balanced chemical equation, we know that there are two moles of carbon in one mole of acetylene.
Moles of C2H2 = (Number of moles of Carbon) / 2
4. Finally, use the molar mass of acetylene to calculate the mass of the sample. The molar mass of acetylene (C2H2) can be calculated by adding up the molar masses of the constituent elements.
Molar mass of acetylene (C2H2) = (2 * Molar mass of Carbon) + (2 * Molar mass of Hydrogen)
= (2 * 12.01 g/mol) + (2 * 1.01 g/mol)
Mass of the Sample = (Moles of C2H2) * (Molar mass of acetylene)
By following these steps, you can calculate the mass of a sample of acetylene gas containing a specific number of carbon atoms.