A container has a volume of #12 L# and holds #14 mol# of gas. If the container is compressed such that its new volume is #7 L#, how many moles of gas must be released from the container to maintain a constant temperature and pressure?

↳Redirected from "Which following pairs of atoms, have a lower electron affinity? a) Ca,K b) I,F c) Li, Ra. I seriously don't know anything about electron affinity all ik that it can buy another element"
1 Answer
Kayla
Dec 27, 2016

8.17 moles of gas must be released from the container

Explanation:

Let's use Avogadro's law:

![http://study.com/academy/lesson/http://molar-volume-using-avogadros-law-to-calculate-the-quantity-or-volume-of-a-gas.html](https://useruploads.socratic.org/sldMI9UaT6WNG2UgorSg_avogadros-law-equation-chalkboard.jpg)

The number 1 represents the initial conditions and the number 2 represents the final conditions.

• Identify your known and unknown variables:

#color(magenta)("Knowns:"#
#v_1#= 5 L
#v_2#= 12 L
#n_1#= 1 mol

#color(green) ("Unknowns:"#
#n_2#

• Rearrange the equation to solve for the final number of moles:

#n_2=(v_2xxn_1)/v_1#

• Plug in your given values to obtain the final number of moles:

#n_2=(7cancelLxx14mol)/(12\cancel"L")# = #8.17 mol#

Related questions
See all questions in Gas Laws
Impact of this question
2188 views around the world
You can reuse this answer
Creative Commons License