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BlackZzzverrR [31]
3 years ago
15

An udentified substance, Y, was thought to be one of the following three compounds.

Chemistry
1 answer:
arlik [135]3 years ago
7 0
This is more logic deduction than having learnt this, but i would think Y = B because it hasnt affected the melting point, implying its the same substance? hope this helps a bit :)
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Answer:- Third choice is correct, 17.6 moles


Solution:- The given balanced equation is:


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We are asked to calculate the moles of potassium hydroxide needed to completely react with 2.94 moles of aluminium sulfate.


From the balanced equation, there is 1:6 mol ratio between aluminium sulfate and potassium hydroxide.


It is a simple mole to mole conversion problem. We solve it using dimensional set up as:


2.94molAl_2(SO_4)_3(\frac{6molKOH}{1molAl_2(SO_4)_3})


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