Moles  [ENDORSED]

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princessturner1G
Posts: 31
Joined: Fri Apr 06, 2018 11:05 am

Moles

Postby princessturner1G » Sun May 06, 2018 4:52 pm

What does the concept "the moles of solute stay the same"?
Can someone give me an example and how I would apply it?

DomMaiorca_1I
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Joined: Fri Apr 06, 2018 11:03 am
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Re: Moles  [ENDORSED]

Postby DomMaiorca_1I » Sun May 06, 2018 5:23 pm

"mole of solute stay the same" implies that even if the concentration of a substance is changed, if the same amount of the original substance is the same then the moles would remain unchanged.

in terms of a practical example, if you have a cup of coke and you pour water into it, although the concentration of the coke has changed, you still have the same amount of coke.

hope this helps put it into perspective a bit

Clarissa Cabil 1I
Posts: 66
Joined: Fri Sep 28, 2018 12:19 am

Re: Moles

Postby Clarissa Cabil 1I » Sat Sep 29, 2018 11:18 am

princessturner1G wrote:What does the concept "the moles of solute stay the same"?
Can someone give me an example and how I would apply it?


In terms of dilution, "the moles of solute stay the same", which means that the moles in the beginning of the experiment, will equal the moles at the end of the experiment (ninitial = n final). We are not destroying any of the solute particles. We are simply adding more solvent into the mixture. An example would be if you had 30 moles of juice in 50 mL of water, and you add another 50 mL of water, you still have 30 moles of juice.


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