How many moles are in 508 g of ethanol?
moles = grams/molar mass.
To find the number of moles in a given mass of a substance, you need to use the formula:
moles = mass / molar mass
In this case, you have 508 g of ethanol. To find the molar mass of ethanol, you need to sum up the atomic masses of all the atoms in one molecule of ethanol.
The molecular formula of ethanol is C2H5OH. The atomic masses are as follows:
- Carbon (C): 12.01 g/mol
- Hydrogen (H): 1.008 g/mol
- Oxygen (O): 16.00 g/mol
Now, calculate the molar mass of ethanol:
Molar mass = (2 * C) + (6 * H) + O
= (2 * 12.01) + (6 * 1.008) + 16.00
= 24.02 + 6.048 + 16.00
= 46.068 g/mol
Now, you can use the formula above to find the number of moles:
moles = 508 g / 46.068 g/mol
≈ 11.03 moles
Therefore, there are approximately 11.03 moles in 508 g of ethanol.