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secondary 3 | Chemistry
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Skyler
Skyler

secondary 3 chevron_right Chemistry

please help with 7b and 7c!!
I do not understand how to get part b so it would be good if you could explain it to me :)

Date Posted: 6 years ago
Views: 756

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Woon Kiat
Woon Kiat's answer
322 answers (Tutor Details)
1st
This is just part of the solution. Once you have the number of mol of HCl in 25cm3 of solution, scale it up to 500cm3 proportionally. That would be the amount dissolved originated from the gas.
From there, work out mol of XCl2. With mol and mass, you can find Mr of XCl2. You should know what to do next then...
Skyler
Skyler
6 years ago
Why is it NaOH? shouldn’t it be KOH?
Woon Kiat
Woon Kiat
6 years ago
You are absolutely right. I made a careless mistake. Sorry.
Woon Kiat
Woon Kiat
6 years ago
Did you managed to complete the question?