Answer:
4.09ₓ10²³ atoms are contained in 10g of C₃H₈
Explanation:
1 mol of C₃H₈ has 3 mol of carbon and 8 mol of hydrogen.
1 mol of C₃H₈ weighs 44 g
In 44 g of C₃H₈ we have 3 mol of C
In 10 g of C₃H₈ we'll have (10 . 3)/ 44 = 0.681 mol
1 mol of C has NA (6.02x10²³) particles
0.681 mol will have (0.681 . 6.02x10²³) = 4.09ₓ10²³ atoms
Answer:
There are 4.1 *10^23 carbon atoms in 10.0 grams of C3H8
Explanation:
Step 1: Data given
Mass of C3H8
Molar mass of C3H8 = 44.1 g/mol
Number of Avogadro = 6.022 *10^23 / mol
Step 2: Calculate number of moles
Number of moles = mass / molar mass
Number of moles C3H8 = 10.0 grams / 44.1 g/mol
Number of moles C3H8 = 0.227 moles
Step 3: Calculate number moles of carbon
For 1 mol C3H8 we have 3 moles of carbon
For 0.227 moles of C3H8 we have 3*0.227 = 0.681 moles
Step 4: Calculate number of carbon atoms
Number of carbon atoms = 0.681 moles * 6.022 *10^23
Number of carbon atoms = 4.1 * 10^23 carbon atoms
There are 4.1 *10^23 carbon atoms in 10.0 grams of C3H8
