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secondary 4 | Biology
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Tara
Tara

secondary 4 chevron_right Biology

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Date Posted: 6 years ago
Views: 460

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Jolene Wong :)
Jolene Wong :)'s answer
10 answers (A Helpful Person)
1st
For 2, just remember to balance the equation! Mg + CuO gives you Cu (stated in question) the only thing left is Mg and O, and since Mg is oxidized, MgO must be formed :)!

(A summary of whatever I wrote in green for q2)

Well done for 3(a) everything is clear :)!
Jolene Wong :)
Jolene Wong :)
6 years ago
Oh don’t forget for 3(a) your answer has to be in 3 significant figures! So it’s 27.0g :)!
Tara
Tara
6 years ago
Thanks for the solutions