Answer:
27.65×10²³ atoms of H
10.37×10²³ atoms of C
Explanation:
Given data:
Mass of C₃H₈ = 25.3 g
Number of hydrogen atom = ?
Number of carbon atom = ?
Solution:
Number of moles of propane:
Number of moles = mass/molar mass
Number of moles = 25.3 g/ 44.1 g/mol
Number of moles = 0.574 mol
1 mole of propane contain 3 mole of carbon atoms.
0.574 moles of propane contain 0.574 × 3 mol = 1.722 moles of C.
1 mole = 6.022 ×10²³ atoms of C
1.722 mole × 6.022 ×10²³ atoms of C / 1 mol
10.37×10²³ atoms of C
Number of atoms of H:
1 mole of propane contain 8 mole of hydrogen.
0.574 moles of propane contain 0.574 × 8 mol = 4.592 moles of H.
1 mole = 6.022 ×10²³ atoms of H
4.592 mole × 6.022 ×10²³ atoms of H / 1 mol
27.65×10²³ atoms of H
