mass of 0.0091mol of retinoic acid
To calculate the mass of 0.0091 mol of retinoic acid, we need to know the molar mass of retinoic acid.
The molecular formula of retinoic acid is C20H28O2, which has a molar mass of:
20 x atomic mass of carbon (12.01) = 240.2 g/mol
28 x atomic mass of hydrogen (1.01) = 28.28 g/mol
2 x atomic mass of oxygen (16.00) = 32.00 g/mol
Total molar mass = 300.48 g/mol
Now, we can use the given amount of retinoic acid in moles and the molar mass to calculate the mass of 0.0091 mol of retinoic acid:
Mass = (0.0091 mol) x (300.48 g/mol) = 2.74 g
Therefore, the mass of 0.0091 mol of retinoic acid is 2.74 g.
To determine the mass of 0.0091 moles of retinoic acid, we need to know the molar mass of the compound. The molar mass is calculated by summing up the atomic masses of all the atoms in the molecule.
The molecular formula for retinoic acid is C20H28O2. To calculate the molar mass, we can use the atomic masses from the periodic table:
C (Carbon) - atomic mass = 12.01 g/mol
H (Hydrogen) - atomic mass = 1.01 g/mol
O (Oxygen) - atomic mass = 16.00 g/mol
Now, let's calculate the molar mass of retinoic acid:
Molar mass of C20H28O2 = (20 * 12.01 g/mol) + (28 * 1.01 g/mol) + (2 * 16.00 g/mol)
= 240.2 g/mol + 28.28 g/mol + 32.00 g/mol
= 300.48 g/mol
Therefore, the molar mass of retinoic acid is approximately 300.48 g/mol.
To find the mass of 0.0091 moles of retinoic acid, we can use the formula:
Mass = Number of moles * Molar mass
= 0.0091 moles * 300.48 g/mol
= 2.74 grams (rounded to two decimal places)
So, the mass of 0.0091 moles of retinoic acid is approximately 2.74 grams.