tag:blogger.com,1999:blog-3598104994262722367.post455910158981712907..comments2019-03-12T21:15:23.398-07:00Comments on Ask alwaysLovely O Level A-Math,E-Math, Chemistry Questions: Chemistry Questions - Mole ConceptsalwaysLovelyhttp://www.blogger.com/profile/06324953814968749558noreply@blogger.comBlogger6125tag:blogger.com,1999:blog-3598104994262722367.post-69143166562369810552007-10-02T10:15:00.000-07:002007-10-02T10:15:00.000-07:00Halo Students,Well Done to all for at least even b...Halo Students,<BR/><BR/>Well Done to all for at least even bother to try it out and sharing with fellow students.<BR/><BR/>Yup. Answer is indeed C, x/14.<BR/><BR/>linwood-you can refer to the 2 answers given by robobooga and lijun. Do let me know if you need clarification on it. Stay positive and cheerful as you prepare...<BR/><BR/>=)Sean Chuahttps://www.blogger.com/profile/05205017026956955312noreply@blogger.comtag:blogger.com,1999:blog-3598104994262722367.post-24360556835082928972007-10-01T22:56:00.000-07:002007-10-01T22:56:00.000-07:00hmm i guess it's x/14 too. i thought its about mol...hmm i guess it's x/14 too. <BR/>i thought its about molar mass.<BR/><BR/>so what's the right answer actually ?????Yan Linwoodhttps://www.blogger.com/profile/15157336130636244066noreply@blogger.comtag:blogger.com,1999:blog-3598104994262722367.post-2661232912942672412007-10-01T09:01:00.000-07:002007-10-01T09:01:00.000-07:00No. of moles of H2 = 2/2 = 1molNo. of molecules of...No. of moles of H2 = 2/2 = 1mol<BR/>No. of molecules of H2 = (1)(6*10^23) = 6*10^23<BR/><BR/>let 6*10^23 = x<BR/><BR/>No. of moles of N2 = 2/28 = (1/14)mol<BR/>No. of molecules = (1/14)(6*10^23) = x/14<BR/><BR/>hence, answer is C.<BR/><BR/>is it right?lijun(:https://www.blogger.com/profile/14155170843141727089noreply@blogger.comtag:blogger.com,1999:blog-3598104994262722367.post-60954326554320632912007-10-01T06:19:00.000-07:002007-10-01T06:19:00.000-07:00hmm... i try...2g of hydrogen gas = 1 mol =x2g of ...hmm... i try...<BR/><BR/>2g of hydrogen gas = 1 mol =x<BR/><BR/>2g of nitrogen gas = 2g/28g =1/14 mol<BR/><BR/>therefore, if 1 mol is x, then 1/14 mol = x/14 # <BR/><BR/>correct?Nickhttps://www.blogger.com/profile/00345141547888042029noreply@blogger.comtag:blogger.com,1999:blog-3598104994262722367.post-36231546735161072252007-10-01T00:03:00.000-07:002007-10-01T00:03:00.000-07:00Well, i will try to answer this question.2g of hyd...Well, i will try to answer this question.<BR/><BR/>2g of hydrogen gas = 2H2 = 4 = x<BR/>2g of nitrogen gas = 2N2 = 2x14 = 28<BR/><BR/>28/4=7<BR/><BR/>since 4=x, therefore,<BR/>nitrogen gas is 7x.<BR/><BR/>well, i dont know whether i did correctly or not though. please correct me if i'm wrong. :DYan Linwoodhttps://www.blogger.com/profile/15157336130636244066noreply@blogger.comtag:blogger.com,1999:blog-3598104994262722367.post-22303906489908890822007-09-30T23:19:00.000-07:002007-09-30T23:19:00.000-07:00hello, who are you? you left me a comment yesterda...hello, who are you? you left me a comment yesterday. anyway, you have a good heart to make this blog :). it helps O level students a lot. especially me. haha.Yan Linwoodhttps://www.blogger.com/profile/15157336130636244066noreply@blogger.com