What is the number of grams of Hydrogen in 5.45 x 10^22 molecules NH3?

moles NH3 = 5.45 x 10^22/6.022 x 10^23 = ?? NH3.

moles H = 3x that number since there are three H atoms in one molecule of NH3.

g H = mols H x atomic mass H

0.274g H

To determine the number of grams of hydrogen in 5.45 x 10^22 molecules of NH3 (Ammonia), we need to consider the molecular formula of NH3, which consists of one nitrogen atom (N) and three hydrogen atoms (H).

The molar mass of hydrogen (H) is approximately 1.008 grams/mol.

To find the number of moles of NH3 in 5.45 x 10^22 molecules, we need to divide the given number of molecules by Avogadro's number (6.022 x 10^23 molecules/mol):

moles of NH3 = (5.45 x 10^22 molecules) / (6.022 x 10^23 molecules/mol)
moles of NH3 ≈ 9.05 x 10^-2 mol

Since there are three hydrogen atoms in one molecule of NH3, we can multiply the number of moles of NH3 by 3 to find the moles of hydrogen:

moles of hydrogen = (9.05 x 10^-2 mol) * 3
moles of hydrogen ≈ 2.715 x 10^-1 mol

Finally, to convert moles of hydrogen to grams, we multiply by the molar mass of hydrogen:

grams of hydrogen = (2.715 x 10^-1 mol) * (1.008 grams/mol)
grams of hydrogen ≈ 2.736 x 10^-1 grams

Therefore, there are approximately 2.736 x 10^-1 grams of hydrogen in 5.45 x 10^22 molecules of NH3.

To determine the number of grams of hydrogen in 5.45 x 10^22 molecules of NH3 (ammonia), we need to use the molar mass and stoichiometry of ammonia.

1. Find the molar mass of NH3:
The molar mass of NH3 is calculated by adding up the atomic masses of the individual atoms in the molecule. Hydrogen (H) has a molar mass of approximately 1.008 grams/mol, and nitrogen (N) has a molar mass of approximately 14.01 grams/mol. Therefore, the molar mass of NH3 is:
(3 * H) + N = (3 * 1.008 g/mol) + 14.01 g/mol = 17.034 g/mol.

2. Determine the number of moles of NH3:
To calculate the number of moles of NH3, we can use Avogadro's number, which states that 1 mole contains 6.022 x 10^23 molecules. Therefore, to find the number of moles in 5.45 x 10^22 NH3 molecules, we can set up a proportion:
(5.45 x 10^22 molecules) / (6.022 x 10^23 molecules/mol) = x moles.

3. Calculate the number of moles of hydrogen:
Since each molecule of NH3 contains three hydrogen atoms, the moles of hydrogen can be found by using the stoichiometric ratio between NH3 and H. In 1 mole of NH3, there are 3 moles of H atoms.
So, the number of moles of hydrogen would be 3 times the moles of NH3 found in step 2.

4. Convert moles of hydrogen to grams:
To calculate the grams of hydrogen, we need to multiply the number of moles of hydrogen by the molar mass of hydrogen, which is approximately 1.008 grams/mol.

Putting it all together:
- Determine the number of moles of NH3 using the given number of molecules and Avogadro's number.
- Multiply the moles of NH3 by 3 to find the moles of hydrogen.
- Convert moles of hydrogen to grams by multiplying by the molar mass of hydrogen.
- Round the final answer to an appropriate number of significant figures, if necessary.

Once you perform the calculations, you will have the number of grams of hydrogen in 5.45 x 10^22 molecules of NH3.