Open, closed, or isolated test 1 question

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torialmquist1F
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Joined: Sat Jul 22, 2017 3:00 am

Open, closed, or isolated test 1 question

Postby torialmquist1F » Sun Feb 04, 2018 10:19 pm

Is a 20mL vial with an organic solvent open, closed, or isolated and why?

Annalise Eder 2L
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Joined: Sat Jul 22, 2017 3:01 am

Re: Open, closed, or isolated test 1 question

Postby Annalise Eder 2L » Sun Feb 04, 2018 10:28 pm

This is an open system because it can freely exchange energy and matter with its surroundings.

Emily Oren 3C
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Re: Open, closed, or isolated test 1 question

Postby Emily Oren 3C » Sun Feb 04, 2018 10:29 pm

A vial filled with an organic solvent is a closed system (if the vial has a lid) because no matter can enter of leave the vial, but energy can enter it by heating or cooling it.

Yang Chen 2E
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Joined: Thu Jul 13, 2017 3:00 am

Re: Open, closed, or isolated test 1 question

Postby Yang Chen 2E » Sun Feb 04, 2018 10:57 pm

Usually vials are open systems because matter and energy can enter them due to lack of a lid. If there IS a lid however, it would be a closed system (unless that vial was in some sort of light blocking vacuum chamber).

Sophia Kim 1C
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Re: Open, closed, or isolated test 1 question

Postby Sophia Kim 1C » Tue Feb 06, 2018 1:52 am

It is an open system because in a vial both matter and energy can be exchanged with the surroundings making it an open system

Ashley Garcia 2L
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Re: Open, closed, or isolated test 1 question

Postby Ashley Garcia 2L » Fri Feb 09, 2018 9:46 pm

A 20mL vial with an organic solvent is an open system. An open system can exchange both energy and matter with the surroundings. Solvent (matter) can be taken out of the vial, the key word is that the vial is "open." The solvent can be heated up or cooled down, in which energy is exchange as heat with the surroundings.

Annie Lieu-1H
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Re: Open, closed, or isolated test 1 question

Postby Annie Lieu-1H » Mon Mar 12, 2018 10:04 am

It's an open system

Guadalupe T 1E
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Re: Open, closed, or isolated test 1 question

Postby Guadalupe T 1E » Mon Mar 12, 2018 1:31 pm

Open. The way I remember it is, if it is open, it can be knocked over and matter can leave it.

Rachel N 1I
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Re: Open, closed, or isolated test 1 question

Postby Rachel N 1I » Sat Mar 17, 2018 12:39 pm

Why is the contents of an ideal cooler at 3 deg Celsius considered isolated and not closed?

Julia Cheng 2J
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Re: Open, closed, or isolated test 1 question

Postby Julia Cheng 2J » Sat Mar 17, 2018 1:13 pm

Rachel N 1I wrote:Why is the contents of an ideal cooler at 3 deg Celsius considered isolated and not closed?

In an ideal cooler, no energy is exchanged with the surroundings (because ideally its contents will stay cold without absorbing warmth from the outside), so it's isolated.

Erik Khong 2E
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Joined: Fri Sep 29, 2017 7:07 am

Re: Open, closed, or isolated test 1 question

Postby Erik Khong 2E » Sat Mar 17, 2018 3:34 pm

An ideal cooler won't allow matter to escape if it's closed. Moreover, it won't allow heat to escape because it is insulated. Thus, it is an isolated system.


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