Answered: Calculate (a) the number of atoms in…

Calculate (a) the number of atoms in 1.05 × 10−6 mole of helium and (b) the number of moles of helium that contains 2.33 × 1021 atoms.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter3: Stoichiometry

Section: Chapter Questions

Problem 13ALQ: Chlorine exists mainly as two isotopes, 37Cl and 33Cl. Which is more abundant? How do you know?

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

Calculate (a) the number of atoms in 1.05 × 10−6

mole of helium and (b) the number of moles of helium that

contains 2.33 × 1021 atoms.

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