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secondary 4 | Biology
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Angel
Anonymous

secondary 4 chevron_right Biology chevron_right Singapore

Anyone know how to do 6ii) and 6iii)? Thank you!!! #secondary4 #chemistry

Date Posted: 1 year ago
Views: 59
Arnold K H Tan
Arnold K H Tan
1 year ago
I know...but my parents taught me not to communicate with strangers...especially anonymous ones.
万丈龍我
万丈龍我
1 year ago
X is more reactive than copper, hence X displaces copper from copper(II) sulfate, so brown deposit of copper is formed.
万丈龍我
万丈龍我
1 year ago
Not so sure about part (b), but I think it's something like X produces more effervescence than Y.
万丈龍我
万丈龍我
1 year ago
Arnold u how old already liddat oso want to 计较
Arnold K H Tan
Arnold K H Tan
1 year ago
Haha..must have fun in life. Given its a Singapore based App.. prefer to help fellow Singaporeans with my limited time. :) Anonymous- dunno where the person is from.

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Arnold K H Tan
Arnold K H Tan's answer
875 answers (A Helpful Person)
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Here's the answer, since you are no longer anonymous. :)