How many moles of carbon, hydrogen, and oxygen are present in a 100g sample of ascorbic acid?
To determine the number of moles of carbon, hydrogen, and oxygen in a sample of ascorbic acid, we need to know the molar mass of ascorbic acid and its molecular formula.
The molecular formula of ascorbic acid is C6H8O6, which tells us that it contains 6 carbon atoms (C), 8 hydrogen atoms (H), and 6 oxygen atoms (O).
To calculate the molar mass of ascorbic acid, we add up the atomic masses of each element in the formula:
(6 x atomic mass of carbon) + (8 x atomic mass of hydrogen) + (6 x atomic mass of oxygen)
To find the atomic masses of carbon (C), hydrogen (H), and oxygen (O), we refer to the periodic table:
- The atomic mass of carbon (C) is approximately 12.01 grams/mole.
- The atomic mass of hydrogen (H) is approximately 1.008 grams/mole.
- The atomic mass of oxygen (O) is approximately 16.00 grams/mole.
Using these values, we can calculate the molar mass of ascorbic acid:
Molar mass of ascorbic acid = (6 x 12.01) + (8 x 1.008) + (6 x 16.00)
Molar mass of ascorbic acid = 72.06 + 8.064 + 96.00
Molar mass of ascorbic acid = 176.124 grams/mole
Now we have the molar mass of ascorbic acid. To find the number of moles of each element present in the 100g sample, we divide the mass of each element by its molar mass.
Number of moles of carbon = (mass of carbon / molar mass of ascorbic acid) = (6 x 12.01) / 176.124
Number of moles of hydrogen = (mass of hydrogen / molar mass of ascorbic acid) = (8 x 1.008) / 176.124
Number of moles of oxygen = (mass of oxygen / molar mass of ascorbic acid) = (6 x 16.00) / 176.124
Now, you can substitute the mass values of carbon, hydrogen, and oxygen from the 100g sample into the above equations to calculate the number of moles for each element.
To determine the number of moles of carbon, hydrogen, and oxygen in a 100g sample of ascorbic acid, we first need to know the molecular formula of ascorbic acid.
The molecular formula for ascorbic acid is C6H8O6. This means that one molecule of ascorbic acid contains 6 carbon atoms, 8 hydrogen atoms, and 6 oxygen atoms.
To find the moles of each element, we will use the molar mass of each element.
The molar mass of carbon (C) is approximately 12.01 g/mol.
The molar mass of hydrogen (H) is approximately 1.01 g/mol.
The molar mass of oxygen (O) is approximately 16.00 g/mol.
Now let's calculate the moles of each element.
Moles of carbon (C):
The molar mass of carbon (C) is 12.01 g/mol.
The mass of carbon in the 100g sample can be calculated by multiplying the number of moles with the molar mass.
Moles of carbon = (mass of carbon) / (molar mass of carbon)
Moles of carbon = (6 × molar mass of carbon) / (molar mass of carbon)
Moles of carbon = 6 moles
Moles of hydrogen (H):
The molar mass of hydrogen (H) is 1.01 g/mol.
The mass of hydrogen in the 100g sample can be calculated by multiplying the number of moles with the molar mass.
Moles of hydrogen = (mass of hydrogen) / (molar mass of hydrogen)
Moles of hydrogen = (8 × molar mass of hydrogen) / (molar mass of hydrogen)
Moles of hydrogen = 8 moles
Moles of oxygen (O):
The molar mass of oxygen (O) is 16.00 g/mol.
The mass of oxygen in the 100g sample can be calculated by multiplying the number of moles with the molar mass.
Moles of oxygen = (mass of oxygen) / (molar mass of oxygen)
Moles of oxygen = (6 × molar mass of oxygen) / (molar mass of oxygen)
Moles of oxygen = 6 moles
Therefore, in a 100g sample of ascorbic acid, there are 6 moles of carbon, 8 moles of hydrogen, and 6 moles of oxygen.
moles ascorbic acid = 100g/molar mass = ?
moles C = ?moles ascorbic acid x #C atoms/1 molecule ascorbic acid.
moles H = ?moles ascorbic acid x #H atoms/1 molecule ascorbic acid.
moles O atoms = etc.