A sample of propane,C3H8, contains 14.4 moles of carbon atoms. How many total moles of atoms does the sample contain?
14.4 moles C atoms will have 14.4/3 moles propane (C3H8) molecules and 8x that for moles H atoms. Then add moles C + moles H.
So will this be my equation:
14.4 moles of C atoms x (1 mole C3H8/3 mole C) = 4.8 mole C3H8 (?)
but, i'm not sure how to do the one for H.
You don't have to do H.
But if you did, it'd be 14.4/3 (# moles) * 8 = 38.4
Each molecule has 11 atoms.
You have 4.8 moles = 52.8 moles of atoms
(Note how 52.8 = 14.4 + 38.4)
Do it as Steve suggested and it saves one step but the answer is the same either way.
A sample of propane, , contains 11.4 of carbon atoms. How many total moles of atoms does the sample contain?
Which of the following compounds would contain a total of three carbon atoms
52.8 moles
To find the total number of moles of atoms in the sample of propane (C3H8), we need to determine the number of moles of hydrogen (H) atoms in addition to the moles of carbon (C) atoms.
The chemical formula of propane (C3H8) indicates that there are three carbon atoms and eight hydrogen atoms present.
Given that the sample contains 14.4 moles of carbon atoms, we can calculate the number of moles of hydrogen atoms using the mole ratio between carbon and hydrogen in C3H8, which is 8 to 3.
To calculate the moles of hydrogen atoms, we can set up the following proportion:
moles of carbon / moles of hydrogen = number of carbon atoms / number of hydrogen atoms
Using the given information:
14.4 moles of carbon / x = 3 carbon atoms / 8 hydrogen atoms
Cross-multiplying gives:
14.4 moles of carbon * 8 hydrogen atoms = 3 carbon atoms * x
115.2 moles of hydrogen = 3 carbon atoms * x
Dividing both sides of the equation by 3 carbon atoms gives:
115.2 moles of hydrogen / 3 carbon atoms = x
x ≈ 38.4 moles of hydrogen
Therefore, the total number of moles of atoms in the sample of propane (C3H8) is:
moles of carbon + moles of hydrogen = 14.4 moles of carbon + 38.4 moles of hydrogen = 52.8 moles of atoms
Therefore, the sample contains 52.8 moles of atoms in total.