Which of the following contains the largest number of atoms?Select one:a. 1.0 mol of water (H2O)b. 1 mol phosphorus trichloride (PCl3)c. 1 mole of carbon tetrachloride (CCl4)d. 1 mol carbon dioxide (CO2)e. All of these contain the same number of atoms.

Answered: Which of the following contains the…

General, Organic, and Biological Chemistry

7th Edition

ISBN:9781285853918

Author:H. Stephen Stoker

Publisher:H. Stephen Stoker

Chapter6: Chemical Calculations: Formula Masses, Moles, And Chemical Equations

Section: Chapter Questions

Problem 6.39EP

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Question

Which of the following contains the largest number of atoms?

Select one:

a. 1.0 mol of water (H₂O)

b. 1 mol phosphorus trichloride (PCl₃)

c. 1 mole of carbon tetrachloride (CCl₄)

d. 1 mol carbon dioxide (CO₂)

e. All of these contain the same number of atoms.

Expert Solution

Step 1

The numbers of atoms present in any substance can be calculated by help of Avogadro's Number. One mole of any substance is equal to the Avogadro's Number. The value of Avogadro's Number is 6.023×10²³ atoms / Molecules.

(a) One mole of water Molecule contains three mole atoms , one is oxygen atom and two are Hydrogen atoms, then Total Number of atoms in one mole of water can be written as -

= 3 × 6.023 ×10²³

= 18.069×10²³

= 1.8069×10²⁴ atoms.

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