How many moles of carbon, hydrogen, and oxygen are present in a 100-g\rm g sample of ascorbic acid?
ascorbic acid is C6H8O6.
mols ascorbic acid in 100 g is
mol = grams/molar mass = 100/176.12 = ?
There are 6 C atoms/mol acid, 8 H atoms/mol acid, and 6 O atoms/mol acid.
mols C is 6x that.
mols H is 8x that.
mols O is 6x that.
To determine the number of moles of carbon, hydrogen, and oxygen in a sample of ascorbic acid, you'll need to know the chemical formula for ascorbic acid (C6H8O6).
Step 1: Determine the molar mass of ascorbic acid
The molar mass of ascorbic acid can be calculated by summing up the atomic masses of each element in the formula:
C: 6 atoms x 12.01 g/mol = 72.06 g/mol
H: 8 atoms x 1.008 g/mol = 8.064 g/mol
O: 6 atoms x 16.00 g/mol = 96.00 g/mol
Molar mass of ascorbic acid = 72.06 + 8.064 + 96.00 = 176.124 g/mol
Step 2: Calculate the number of moles
To calculate the number of moles, divide the mass of the sample by the molar mass:
Moles of ascorbic acid = 100 g / 176.124 g/mol
Now, you can calculate the number of moles of each element in the sample by multiplying the number of moles of ascorbic acid by the ratio of each element in the formula.
Moles of carbon = Moles of ascorbic acid x (6 moles of carbon / 1 mole of ascorbic acid)
Moles of hydrogen = Moles of ascorbic acid x (8 moles of hydrogen / 1 mole of ascorbic acid)
Moles of oxygen = Moles of ascorbic acid x (6 moles of oxygen / 1 mole of ascorbic acid)
Calculate each of these values using the moles of ascorbic acid obtained from Step 2.
To determine the number of moles of carbon, hydrogen, and oxygen in a sample of ascorbic acid, we need to know the molecular formula of ascorbic acid. The molecular formula represents the exact number of atoms of each element in one molecule of the compound.
The molecular formula of ascorbic acid is C6H8O6. This means that each molecule of ascorbic acid contains 6 carbon atoms, 8 hydrogen atoms, and 6 oxygen atoms.
To calculate the number of moles of each element, we can use the following steps:
1. Determine the molar mass of each element:
- Carbon (C): 12.01 g/mol
- Hydrogen (H): 1.01 g/mol
- Oxygen (O): 16.00 g/mol
2. Calculate the moles of each element using the following formula:
Number of moles = Mass of element / Molar mass of element
For carbon (C):
Number of moles of carbon = Mass of carbon / Molar mass of carbon
= 6 g / 12.01 g/mol
= 0.499 moles
For hydrogen (H):
Number of moles of hydrogen = Mass of hydrogen / Molar mass of hydrogen
= 8 g / 1.01 g/mol
= 7.92 moles
For oxygen (O):
Number of moles of oxygen = Mass of oxygen / Molar mass of oxygen
= 6 g / 16.00 g/mol
= 0.375 moles
Therefore, in a 100 g sample of ascorbic acid, there are approximately 0.499 moles of carbon, 7.92 moles of hydrogen, and 0.375 moles of oxygen.