how many h2 can be produced by 9.2 gr with h2o
a mol of H2O has mass of 2+16 = 18 grams
so we have 9.2/18 = .511 mols of H2O
that is .511 mols of H2
.511 * 6.02*10^23 = 3.08*10^23 molecules of H2
moles of H2O in 9.2 grams: moles=9.2/18=you do it.
Moles of H2 in one mole of H2O: one
so you get 9.2/18 moles of H2.
That is 9.2/18 * 2 grams.
To determine the number of H2 molecules that can be produced from 9.2 grams of H2O, we need to follow these steps:
1. Determine the molar mass of H2O (water). The molar mass of water is calculated by adding up the atomic masses of its constituent atoms. The atomic masses of hydrogen (H) and oxygen (O) are approximately 1 g/mol and 16 g/mol, respectively. Therefore, the molar mass of water is 18 g/mol.
2. Convert the mass of 9.2 grams of H2O to moles. To do this, divide the mass by the molar mass of water:
Moles = Mass / Molar mass
Moles = 9.2 g / 18 g/mol
Moles ≈ 0.511 moles
3. Use stoichiometry to determine the mole ratio between H2 and H2O. The balanced chemical equation for the reaction of water (H2O) to produce hydrogen gas (H2) is:
2H2O => 2H2 + O2
This equation tells us that for every 2 moles of water, 2 moles of hydrogen gas are produced.
4. Apply the mole ratio to calculate the number of moles of H2. Since the mole ratio is 2:2, it means that the number of moles of H2 is equal to the number of moles of H2O:
Moles of H2 = Moles of H2O
Moles of H2 = 0.511 moles
5. Finally, calculate the number of H2 molecules. Since there are approximately 6.022 x 10^23 molecules in one mole, we can use Avogadro's number to determine the number of H2 molecules:
Number of H2 molecules = Moles of H2 x Avogadro's number
Number of H2 molecules = 0.511 moles x 6.022 x 10^23 molecules/mol
Number of H2 molecules ≈ 3.08 x 10^23 H2 molecules
Therefore, approximately 3.08 x 10^23 H2 molecules can be produced from 9.2 grams of H2O.