How many moles of carbon, hydrogen, and oxygen are present in a 100-g\rm g sample of ascorbic acid?

See your other post above.

To determine the number of moles of carbon, hydrogen, and oxygen present in a sample of ascorbic acid, we need to know the molecular formula of ascorbic acid, which is C6H8O6.

First, let's find the number of moles of carbon (C):
The atomic mass of carbon (C) is 12.01 g/mol.
The molecular formula of ascorbic acid (C6H8O6) indicates that there are 6 carbon atoms in each molecule.
So, the total mass of carbon in the sample can be calculated as follows:
Mass of carbon = Number of carbon atoms × Atomic mass of carbon
= 6 × 12.01 g/mol
= 72.06 g

Next, let's find the number of moles of hydrogen (H):
The atomic mass of hydrogen (H) is 1.008 g/mol.
The molecular formula of ascorbic acid indicates that there are 8 hydrogen atoms in each molecule.
So, the total mass of hydrogen in the sample can be calculated as follows:
Mass of hydrogen = Number of hydrogen atoms × Atomic mass of hydrogen
= 8 × 1.008 g/mol
= 8.064 g

Lastly, let's find the number of moles of oxygen (O):
The atomic mass of oxygen (O) is 16.00 g/mol.
The molecular formula of ascorbic acid indicates that there are 6 oxygen atoms in each molecule.
So, the total mass of oxygen in the sample can be calculated as follows:
Mass of oxygen = Number of oxygen atoms × Atomic mass of oxygen
= 6 × 16.00 g/mol
= 96.00 g

Now, we can find the number of moles of each element by using their respective molar masses:

Number of moles of carbon = Mass of carbon / molar mass of carbon
= 72.06 g / 12.01 g/mol
= 6.00 mol

Number of moles of hydrogen = Mass of hydrogen / molar mass of hydrogen
= 8.064 g / 1.008 g/mol
= 8.00 mol

Number of moles of oxygen = Mass of oxygen / molar mass of oxygen
= 96.00 g / 16.00 g/mol
= 6.00 mol

Therefore, in a 100 g sample of ascorbic acid, there are approximately 6.00 moles of carbon, 8.00 moles of hydrogen, and 6.00 moles of oxygen.