1.18 moles of helium gas are put into a balloon until the volume is 22.7 L. Gas is let out of theballoon until the volume reduces to 8.84 L. How many grams of helium are left in the balloon at theend? Do not include units in your answer.

Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have…

Answered: 1.18 moles of helium gas are put into a…

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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1.18 moles of helium gas are put into a balloon until the volume is 22.7 L. Gas is let out of the
balloon until the volume reduces to 8.84 L. How many grams of helium are left in the balloon at the
end? Do not include units in your answer.

Expert Solution

Step 1 Avagadro's Law

Avogadro's law states that "equal volumes of all gases, at the same temperature and pressure, have the same number of molecules."

ie,

$V α n V = v o l u m e o f t h e g a s n = n u m b e r o f m o l e s o f g a s$

This equation can also be written as,

$\frac{V_{1}}{n_{1}} = \frac{V_{2}}{n_{2}} V_{1} = f i r s t v o l u m e V_{2} = s e c o n d v o l u m e n_{1} = f i r s t n u m b e r o f m o l e s o f g a s n_{2} = s e c o n d n u m b e r o f m o l e s o f g a s$

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