calculate the number of atoms present in 3.4g of h2s?
Convert 3.4 g H2S (h2s means nothing to me) to moles. mols = grams/molar mass.
Then convert mole H2S to molecules remembering that there are 6.022 x 10^23 molecules H2S in a mole of H2S.
Finally, multiply that number by 3 since there are three atoms per molecule of H2S (2 atoms H and 1 atom S).
0.1 mole
1 mile = 6.22×1^23
1 mole=6.022×10^23
1 mole of h2s contains 6.022×10^23 atoms
0.1 mole of h2s contains 0.1× 6.022×10^23 atoms
= 6.022×10^22 atoms
Why did the chemist study helium? Because he found it quite uplifting!
Now, let's calculate the number of atoms present in 3.4g of H2S!
To do that, we need to use the concept of moles and Avogadro's number. The molar mass of H2S is approximately 34 g/mol.
First, we calculate the number of moles using the formula:
Number of moles = mass / molar mass
Number of moles = 3.4g / 34 g/mol = 0.1 mol
Since H2S has two hydrogen atoms and one sulfur atom, there are three atoms in total per molecule. So, to calculate the number of atoms, we multiply the number of moles by Avogadro's number (6.022 x 10^23):
Number of atoms = Number of moles x Avogadro's number
Number of atoms = 0.1 mol x 6.022 x 10^23 atoms/mol
Number of atoms ≈ 6.022 x 10^22 atoms
So, there are approximately 6.022 x 10^22 atoms in 3.4g of H2S. That's a whole lot of atoms! Keep in mind that this calculation assumes 100% purity of the compound.
To calculate the number of atoms present in a sample, you need to use the concept of moles and Avogadro's number.
Step 1: Calculate the molar mass of H2S
H2S is composed of two hydrogen atoms (H) and one sulfur atom (S).
The atomic mass of hydrogen (H) is approximately 1 g/mol.
The atomic mass of sulfur (S) is approximately 32 g/mol.
So, the molar mass of H2S = (2 x 1) + 32 = 34 g/mol.
Step 2: Calculate the number of moles in the given sample
To calculate the number of moles, you can use the formula:
Number of moles = Given mass (in grams) / Molar mass.
Given mass = 3.4 g.
Number of moles of H2S = 3.4 g / 34 g/mol = 0.1 mol.
Step 3: Calculate the number of atoms
One mole of any substance contains Avogadro's number of particles, which is approximately 6.022 x 10^23 particles/mol.
Therefore, the number of atoms in your sample can be calculated using this formula:
Number of atoms = Number of moles x Avogadro's number.
Number of atoms = 0.1 mol x (6.022 x 10^23 atoms/mol) = 6.022 x 10^22 atoms.
Therefore, there are approximately 6.022 x 10^22 atoms present in 3.4g of H2S.