how many c atoms are contained in 15.63g of c5h12??
You have to find the mass of 1 mole first. Then you will know what fraction of a mole you are working with
one mole has 5 carbons
your fraction of a mole has ? carbons
5* 12.01+ 12*1.01= 60.05 g/mol
c H
1 mol of C= 60.05g/mol
next step?
To determine the number of carbon (C) atoms contained in 15.63g of C5H12, we need to consider the molar mass of C5H12 and the ratio of C atoms to the molecule.
Step 1: Find the molar mass of C5H12:
The molar mass of C5H12 can be calculated as follows:
(5 * atomic mass of C) + (12 * atomic mass of H)
(5 * 12.01 g/mol) + (12 * 1.01 g/mol)
60.05 g/mol + 12.12 g/mol
72.17 g/mol
Step 2: Calculate the number of moles of C5H12 in 15.63g:
Number of moles = mass / molar mass
Number of moles = 15.63g / 72.17 g/mol
Step 3: Determine the number of carbon (C) atoms:
Since there are 5 carbon (C) atoms per C5H12 molecule, we can multiply the number of moles by Avogadro's number to find the number of carbon atoms.
Number of C atoms = (number of moles) * (Avogadro's number)
Avogadro's number = 6.022 x 10^23 molecules/mol
Now, we can calculate the number of C atoms:
Number of C atoms = (15.63g / 72.17 g/mol) * (6.022 x 10^23 molecules/mol)
By performing the calculations, you will get the final answer.
To find the number of carbon (C) atoms in 15.63g of C5H12, you need to use the concept of molar mass and Avogadro's number.
First, calculate the molar mass of C5H12.
C5H12 consists of 5 carbon atoms (C) and 12 hydrogen atoms (H). The molar mass of carbon is approximately 12.01 g/mol, and the molar mass of hydrogen is approximately 1.01 g/mol.
Molar mass of C5H12 = (5 * molar mass of C) + (12 * molar mass of H)
= (5 * 12.01 g/mol) + (12 * 1.01 g/mol)
= 60.05 g/mol + 12.12 g/mol
= 72.17 g/mol
Next, use the molar mass to find the number of moles of C5H12 in 15.63g.
Number of moles = mass (g) / molar mass (g/mol)
= 15.63g / 72.17 g/mol
= 0.2162 mol
Finally, use Avogadro's number to calculate the number of carbon atoms.
Avogadro's number = 6.022 x 10^23 atoms/mol
Number of carbon atoms = number of moles * Avogadro's number
= 0.2162 mol * 6.022 x 10^23 atoms/mol
= 1.302 x 10^23 atoms
Therefore, there are approximately 1.302 x 10^23 carbon atoms in 15.63g of C5H12.