Determine how many atoms there are in 1 litre of hexane or gasoline. A litre of gasoline has a mass of approximately 850.0 grams. Assume that the molecular formula for gasoline is C6H6
calculate the RMM based on C6H6 = 78
(you may want to get a more accurate figure)
i.e. there are 78 g mole^-1
so number fo moles = M = 850.0 g /78 g mole^-1
as there are avogadros number (6.023 x 10^23) of molecules on one mole the number of molecules is
M x 6.023 x 10^23
there are 12 atoms per molecule (C6H6)
so the number of atoms is 12 times the number of molecules.
To determine the number of atoms in 1 liter of hexane or gasoline, we need to use Avogadro's number and the molecular formula of the substance.
1. Calculate the molar mass of the molecule:
For gasoline, the molecular formula is C6H6, which means it contains 6 carbon atoms (C) and 6 hydrogen atoms (H).
The molar masses of carbon (C) and hydrogen (H) are approximately 12.01 g/mol and 1.01 g/mol, respectively.
So, the molar mass of gasoline will be:
(6 * molar mass of carbon) + (6 * molar mass of hydrogen)
Molar mass of carbon (C) = 12.01 g/mol
Molar mass of hydrogen (H) = 1.01 g/mol
Molar mass of gasoline = (6 * 12.01 g/mol) + (6 * 1.01 g/mol)
2. Calculate the number of moles of gasoline:
We can use the equation: moles = mass / molar mass
Given that the mass of 1 liter of gasoline is approximately 850.0 grams, we can convert that to moles:
Moles of gasoline = mass of gasoline / molar mass of gasoline
3. Calculate the number of atoms:
Now, we can use Avogadro's number to determine the number of atoms in the calculated moles.
Avogadro's number is approximately 6.022 × 10^23 atoms/mol.
Number of atoms in gasoline = Moles of gasoline * Avogadro's number
So, to find the number of atoms in 1 liter of hexane or gasoline, you would need to perform these calculations using the molecular formula and known mass.