Question

Calculate how many atoms of hydrogen in water are produced when 2.4 moles of propane are reacted.

A. 3.6 × 10²³ atoms
B. 7.2 × 10²³ atoms
C. 1.2 × 10²³ atoms
D. 4.8 × 10²³ atoms

Answer 1

To calculate the number of atoms of hydrogen in water produced from 2.4 moles of propane, use the balanced equation and Avogadro's number.

Step-by-step explanation:

To calculate the number of hydrogen atoms in water produced from 2.4 moles of propane, we need to know the balanced equation.

The balanced equation for the combustion of propane is:

C3H8 + 5O2 → 3CO2 + 4H2O

From the balanced equation, we can see that for every mole of propane, 4 moles of water are produced. Therefore, for 2.4 moles of propane, we will have 2.4 x 4 = 9.6 moles of water.

Using Avogadro's number (6.02 x 1023), we can calculate the number of hydrogen atoms:

9.6 moles x 2 (hydrogen atoms per water molecule) x 6.02 x 1023 = 1.152 x 1025 atoms of hydrogen