Chemistry Review Section E

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Nabeeha Khan 1D
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Joined: Fri Apr 06, 2018 11:03 am

Chemistry Review Section E

Postby Nabeeha Khan 1D » Thu Apr 12, 2018 12:10 am

For #23 in Section E is finding the number of copper2+ ions the same as finding the number of moles?

Aryana Nazem 1A
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Joined: Fri Apr 06, 2018 11:04 am

Re: Chemistry Review Section E

Postby Aryana Nazem 1A » Thu Apr 12, 2018 12:21 am

No, if i am understanding your question..(not sure if i am), because you are given the units of the ions in moles to begin with .Don't quote me though.

Harmonie Ahuna-1C
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Re: Chemistry Review Section E

Postby Harmonie Ahuna-1C » Sun Apr 15, 2018 1:50 pm

Yes, in that question when it asks for the amount of ions it essentially means the same thing as finding the mols of Cu2+ ions in the overall CuBr2 compound. For this, you'd divide the given amount of CuBr2 (3 g) by the total molar mass of the compound (in g/mol). Then, because there's 1 mol of Cu2+ per mol CuBr2, you multiply this by (1 mol Cu2+/1mol CuBr2). This will yield the amount of mols of Cu2+.

Ziana Bhanji 1E
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Re: Chemistry Review Section E

Postby Ziana Bhanji 1E » Sun Apr 15, 2018 3:11 pm

Yes, because the question asks for the amount of Ca2+ ions (in moles).

Chem_Mod
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Re: Chemistry Review Section E

Postby Chem_Mod » Sun Apr 15, 2018 5:26 pm

I do not understand the question that is being posed. You need to post more information related to the question such that the question itself can be understood by anyone reading the post.

Based on what the question seems to suggest, you need to quantify the amount of Cu2+ ions (probably in moles). Remember that mole is a unit which quantifies number of objects (like atoms, ions, molecules, etc.)


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