How many oxygen atoms are in
a) 3.21 x 10^22 molecules CH3OH
b) .250 mol C6H12O6
Is it a) 3.21 x 10^22 atoms
b) 9.03 x 10^23 atoms
To determine the number of oxygen atoms in each case, we need to apply the concept of Avogadro's number and the chemical formula of the molecules.
a) For the molecule CH3OH:
- The chemical formula of CH3OH shows it contains one oxygen atom.
- Avogadro's number states that there are 6.022 x 10^23 molecules in 1 mole of a substance.
- We are given 3.21 x 10^22 molecules CH3OH.
To find the number of oxygen atoms:
Number of oxygen atoms = (Number of molecules of CH3OH) * (Number of oxygen atoms per molecule)
= (3.21 x 10^22 molecules) * (1 oxygen atom per molecule)
= 3.21 x 10^22 atoms.
Thus, the number of oxygen atoms is 3.21 x 10^22 atoms.
b) For the molecule C6H12O6:
- The chemical formula of C6H12O6 shows it contains six oxygen atoms.
- We are given 0.250 mol C6H12O6.
To find the number of oxygen atoms:
Number of oxygen atoms = (Number of moles of C6H12O6) * (Avogadro's number) * (Number of oxygen atoms per molecule)
= (0.250 mol) * (6.022 x 10^23 molecules/mol) * (6 oxygen atoms per molecule)
= 9.03 x 10^23 atoms.
Thus, the number of oxygen atoms is 9.03 x 10^23 atoms.
To determine the number of oxygen atoms in a given amount of molecules or moles, we need to look at the chemical formula and the coefficients provided.
a) 3.21 x 10^22 molecules CH3OH:
The chemical formula for CH3OH (methanol) consists of one oxygen atom. To calculate the number of oxygen atoms, we multiply the number of molecules by the number of oxygen atoms per molecule.
Number of oxygen atoms = Number of molecules * Number of oxygen atoms per molecule
In this case, we have 3.21 x 10^22 molecules of CH3OH, and each molecule has one oxygen atom.
Number of oxygen atoms = 3.21 x 10^22 * 1
Therefore, there are 3.21 x 10^22 oxygen atoms in 3.21 x 10^22 molecules of CH3OH.
b) 0.250 mol C6H12O6:
The chemical formula for C6H12O6 (glucose) consists of 6 oxygen atoms. To determine the number of oxygen atoms, we can use Avogadro's number.
Avogadro's number states that there are approximately 6.022 x 10^23 particles (atoms, molecules, ions) in one mole of any substance.
So, we can calculate the number of oxygen atoms by multiplying the number of moles by Avogadro's number and then multiplying by the number of oxygen atoms per molecule.
Number of oxygen atoms = Number of moles * Avogadro's number * Number of oxygen atoms per molecule
In this case, we have 0.250 moles of C6H12O6, and each molecule has 6 oxygen atoms.
Number of oxygen atoms = 0.250 * 6.022 x 10^23 * 6
Therefore, there are approximately 9.03 x 10^23 oxygen atoms in 0.250 moles of C6H12O6.
So, the correct answer is:
a) 3.21 x 10^22 oxygen atoms
b) 9.03 x 10^23 oxygen atoms