Which contains the largest number of molecules? Consider three one - ProProfs Discuss
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Which contains the largest number of molecules? Consider three one-liter flasks at STP. Flask A contains NH3 gas, flask B contains NO2 gas and flask C contains N2 gas.



A. Flask A
B. Flask B
C. Flask C
D. All are the same
E. None

This question is part of Gases Quiz 1
Asked by Pszpila, Last updated: Feb 01, 2019

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3 Answers

j. Goodman

J. GoodmanWeb Content Writer, San Antonio
Web Content Writer, San Antonio

Answered on Feb 01, 2019

The answer to this question is letter B. All three flasks are measured 1 liter and are placed in the same room making them have the same temperature too. All 3 flasks have also the same number of molecules as they contain the same element (Nitrogen) and have the equal volume as well.

This is a need for solving their mass by using the Avogadro’s Law. Following the Avogadro’s Law, Flask A that has the NH3 gases is 17 g/mol, Flask B with NO2 is 46 g/mol and Flask 3 or with the N2 gas is equal to 28 g/mol. Based on the following answers, Nitrogen Dioxide has the largest number of molecules.

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John Adney

John Adney

Answered on Dec 06, 2016

Why is it that they are all the same and not just flask a

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John Smith

John Smith

Answered on Nov 14, 2016

All are the same
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