number of moles in 22.0g of phenol
To find the number of moles in 22.0g of phenol, we need to divide the mass of phenol by its molar mass.
The molar mass of phenol (C6H5OH) can be calculated by adding up the atomic masses of each element in its chemical formula:
Molar mass of C = 12.01 g/mol
Molar mass of H = 1.01 g/mol
Molar mass of O = 16.00 g/mol
Molar mass of C6H5OH = (6 x 12.01) + (5 x 1.01) + 16.00
= 94.11 g/mol
Now, we can calculate the number of moles of phenol:
Number of moles = mass ÷ molar mass
= 22.0g ÷ 94.11 g/mol
= 0.234 moles
Therefore, there are 0.234 moles of phenol in 22.0g of phenol.
To determine the number of moles in a given mass of a substance, you need to use its molar mass. The molar mass of phenol (C6H6O) can be calculated by summing up the atomic masses of its constituent elements.
The atomic masses are as follows:
- Carbon (C) = 12.01 g/mol
- Hydrogen (H) = 1.01 g/mol
- Oxygen (O) = 16.00 g/mol
To find the molar mass of phenol:
(6 * 12.01 g/mol) + (6 * 1.01 g/mol) + (1 * 16.00 g/mol) = 94.11 g/mol
Now, let's calculate the number of moles using the formula:
Number of moles = given mass / molar mass
Number of moles = 22.0 g / 94.11 g/mol ≈ 0.234 moles
Therefore, there are approximately 0.234 moles in 22.0 grams of phenol.