A sample of propane, C3H8, contains 18.0 moles of carbon atoms. How many total moles of atoms does the sample contain?
Well, let's see... Propane, C3H8, consists of 3 carbon atoms and 8 hydrogen atoms. So, if we have 18.0 moles of carbon atoms in the sample, we can multiply that by 3 to find the total number of moles of carbon atoms: 18.0 moles of carbon atoms x 3 = 54.0 moles of carbon atoms. And since there are also 8 moles of hydrogen atoms for every mole of propane, we can multiply that by 8 to find the total number of moles of hydrogen atoms: 18.0 moles of carbon atoms x 8 = 144.0 moles of hydrogen atoms. Adding those up gives us: 54.0 moles of carbon atoms + 144.0 moles of hydrogen atoms = 198.0 moles of atoms in the sample. So, the sample contains a grand total of 198.0 moles of atoms! That should be enough atoms to throw a seriously wild party in the periodic table! 🎉🎈
To find the total number of moles of atoms in the sample of propane (C3H8) given that it contains 18.0 moles of carbon atoms, we need to consider the molecular formula of propane.
Propane has the formula C3H8, meaning it contains 3 carbon atoms and 8 hydrogen atoms.
Since there are 18.0 moles of carbon atoms, each mole of propane contains 3 moles of carbon atoms.
So, the total number of moles of atoms in the sample can be calculated as follows:
Total moles of atoms = (moles of carbon atoms) + (moles of hydrogen atoms)
Given that there are 18.0 moles of carbon atoms, we need to determine the number of moles of hydrogen atoms.
The molecular formula of propane (C3H8) indicates that there are 8 hydrogen atoms per molecule.
Since each mole of propane contains 8 moles of hydrogen atoms, the number of moles of hydrogen atoms is calculated as follows:
moles of hydrogen atoms = 8 moles of hydrogen atoms per mole of propane × 18.0 moles of propane
moles of hydrogen atoms = 8 × 18.0
moles of hydrogen atoms = 144.0
Now, we can calculate the total number of moles of atoms in the sample:
Total moles of atoms = (moles of carbon atoms) + (moles of hydrogen atoms)
Total moles of atoms = 18.0 + 144.0
Total moles of atoms = 162.0
Therefore, the sample of propane contains a total of 162.0 moles of atoms.
To find the total moles of atoms in the sample of propane, we need to determine the number of moles of hydrogen atoms in addition to the given moles of carbon atoms.
First, let's analyze the molecular formula of propane (C3H8). It tells us that each molecule of propane contains 3 carbon atoms and 8 hydrogen atoms.
Given that there are 18.0 moles of carbon atoms, we can calculate the total moles of carbon atoms multiplied by the number of molecules in one mole:
Total moles of carbon atoms = 18.0 moles
Next, we need to find the moles of hydrogen atoms. Since each molecule of propane contains 8 hydrogen atoms, we can use the ratio of carbon to hydrogen atoms to determine the number of moles of hydrogen atoms:
For each molecule of propane:
- There are 3 moles of carbon atoms, and
- There are 8 moles of hydrogen atoms.
Since the ratio is 3:8 (carbon atoms to hydrogen atoms), we can set up a proportion using the given moles of carbon atoms:
(3 moles of carbon atoms) / (8 moles of hydrogen atoms) = (18.0 moles of carbon atoms) / (x moles of hydrogen atoms)
Cross-multiplying the equation:
3 * x = 8 * 18.0
3 * x = 144.0
Solving for x:
x = 144.0 / 3
x = 48.0
So, there are 48.0 moles of hydrogen atoms in the sample of propane.
To calculate the total moles of atoms in the sample, we add the moles of carbon atoms to the moles of hydrogen atoms:
Total moles of atoms = Moles of carbon atoms + Moles of hydrogen atoms
Total moles of atoms = 18.0 moles + 48.0 moles
Total moles of atoms = 66.0 moles
Therefore, the sample of propane contains a total of 66.0 moles of atoms.
The same contains 18.0 mols C atoms.
The sample contains 18.0 mols C x 8 mols H/3 mols C) = mols H atoms.
Total mols of atoms = mols C + mols H = ?