Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
If you have7.93 x 1022 molecules of Ne2 gas. How many g do you have ?
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
Step 1
The number of molecules of Ne2 gas is 7.93×1022.
The formula to calculate number of molecules is,
![Number of Molecules = moles x NA](https://content.bartleby.com/qna-images/answer/6d66cd83-7b79-413c-aebd-588721111c5e/8413969a-d56a-4213-a0ad-a0f0f7829766/8hrhufr.png)
Step 2
NA is the Avogadro constant whose value is 6.022×1023.
Put the value of number of molecules and NA in the given formula to calculate the number of moles of Ne2 gas.
![Number of molecules = moles x N
7.93x102 molesx(6.022 x 103
7.93x1022
moles
6.022x1023
=0.132](https://content.bartleby.com/qna-images/answer/6d66cd83-7b79-413c-aebd-588721111c5e/8413969a-d56a-4213-a0ad-a0f0f7829766/9pfzhzm.png)
Step 3
The formula that can be used to calculate gram is,
![Mass
Mole
Mass MolexM,](https://content.bartleby.com/qna-images/answer/6d66cd83-7b79-413c-aebd-588721111c5e/8413969a-d56a-4213-a0ad-a0f0f7829766/90j8vu.png)
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