Answered: How many atoms are present in 123 g of…

How many atoms are present in 123 g of magnesium cyanide? a. 9.7 x 1023 b. 2.91x 1024 c. 2.83 x 1028 d. 4.85 x 1024 e. 5.65 x 1027

Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter2: Atoms And Molecules

Section: Chapter Questions

Problem 2.86E

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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

How many atoms are present in 123 g of magnesium cyanide?

a. 9.7 x 10²³

b. 2.91x 10²⁴

c. 2.83 x 10²⁸

d. 4.85 x 10²⁴

e. 5.65 x 10²⁷

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