tag:blogger.com,1999:blog-6403799362875544461.post8140028396700123839..comments2024-03-21T12:42:53.267+08:00Comments on Mr Sai Mun's Blog: SPM Chemistry 2016 Paper 1 Answersmr sai munhttp://www.blogger.com/profile/17212160178411112789noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-6403799362875544461.post-29465616774691710532020-12-19T20:51:50.836+08:002020-12-19T20:51:50.836+08:00the cathode carbon is at the left...(4.0g)
you sh...the cathode carbon is at the left...(4.0g)<br /><br />you should now that at the cathode cu is form <br /><br />cu^2+ +2e^--->cu<br /><br />1.find the no of mol of solution<br />2.find the weight by multiplying the mol of solution and the RAM of cu then you will get 1.6g <br /><br />then 4.0g+1.6g=5.6g<br /><br />note:carbon electrode is an inert electrode and does not take part in a chemical EVAN WILL MASTILIhttps://www.blogger.com/profile/12712412103742023420noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-59802668450554685872020-12-16T10:15:02.647+08:002020-12-16T10:15:02.647+08:00Sir how to calculate the question 44 i cant get it...Sir how to calculate the question 44 i cant get it ...Chockyhttps://www.blogger.com/profile/10258248861853647813noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-84651316326422974112017-06-26T16:53:26.402+08:002017-06-26T16:53:26.402+08:00Sir can i get spm 2016 answer scheme for mathemati...Sir can i get spm 2016 answer scheme for mathematics,physics,biology and chemistry.Anonymoushttps://www.blogger.com/profile/16788755811131646248noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-76940512269536912632017-04-03T06:31:52.388+08:002017-04-03T06:31:52.388+08:00I got 45 from this schemeI got 45 from this schemeKamal Tahirhttps://www.blogger.com/profile/15887345685441314708noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-77973476692802192212016-12-13T11:03:54.642+08:002016-12-13T11:03:54.642+08:00why 50 is Awhy 50 is AAnonymoushttps://www.blogger.com/profile/03323249738785185142noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-42792391110513059842016-12-09T17:57:28.358+08:002016-12-09T17:57:28.358+08:00Yup...totally trueYup...totally trueISWANDI IRWAN B. ISMAILhttps://www.blogger.com/profile/11793768012979688759noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-32350174556442455012016-12-09T17:55:36.895+08:002016-12-09T17:55:36.895+08:00No, HCl acid does not react with copper. Only thos...No, HCl acid does not react with copper. Only those metals whose standard reduction potentials are lower than that of hydrogen react with non-oxidising acids like HCl and dil.H2SO4, and displace hydrogen from them. Copper has higher reduction potential (more positive) than hydrogen, and it does not react with HCl acid.ISWANDI IRWAN B. ISMAILhttps://www.blogger.com/profile/11793768012979688759noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-79115558734788227422016-12-01T21:17:53.162+08:002016-12-01T21:17:53.162+08:00Why is no.23 B? Copper is lower than hydrogen in e...Why is no.23 B? Copper is lower than hydrogen in ecs. Thus it cannot displace hydrogen and no reaction occur isn't? Anonymoushttps://www.blogger.com/profile/17009472219794844886noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-25237832257706624562016-12-01T11:36:18.378+08:002016-12-01T11:36:18.378+08:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/09517673130580688823noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-22500335093523647052016-11-30T20:13:45.680+08:002016-11-30T20:13:45.680+08:00For number 23, the question ask which of the follo...For number 23, the question ask which of the following will produce the least gas bubbles. If copper we to react HCl, well, they be no reaction and therefore no bubbles. I guess my overall question is : Is no gas bubbles considered as least gas bubbles? Anonymoushttps://www.blogger.com/profile/03767256484869016408noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-75960971352530396912016-11-30T16:25:21.742+08:002016-11-30T16:25:21.742+08:00calcium carbonate is an insoluble salt,we cannot w...calcium carbonate is an insoluble salt,we cannot wash it with soap unless you scratch it.We use vineger to react and produce soluble (CH3COO)2Ca.From the question,“in order to remove the white layer”,so don't think too much about which is suitable to wash with soap.Anonymoushttps://www.blogger.com/profile/00129520714030197328noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-25941016021272668202016-11-30T09:15:33.641+08:002016-11-30T09:15:33.641+08:00Can I ask why 41 answer is B?The chemical formula ...Can I ask why 41 answer is B?The chemical formula of vinegar is CH3COOH.The product between vinegar and calcium carbonate is (CH3COO)2Ca+CO2+H2O.Soap will form scum in the presence of calcim ion.yew chi jianhttps://www.blogger.com/profile/03639743932274504980noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-34876101639900131442016-11-29T23:59:52.069+08:002016-11-29T23:59:52.069+08:00Thanks but I had finished all my papers. :)
Thanks but I had finished all my papers. :)<br />Anonymoushttps://www.blogger.com/profile/12201984481488451010noreply@blogger.comtag:blogger.com,1999:blog-6403799362875544461.post-62351848541039744592016-11-29T20:20:02.176+08:002016-11-29T20:20:02.176+08:00Thank you very much Thank you very much Anonymoushttps://www.blogger.com/profile/09763046323257936896noreply@blogger.com