Archives

{“questions”:{“l5ryb”:{“id”:”l5ryb”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\np.san 2008\r\n\r\n \r\nLa formula bruta C4H10 corrisponde a:\r\n“,”desc”:””,”hint”:””,”answers”:{“9ktor”:{“id”:”9ktor”,”image”:””,”imageId”:””,”title”:”A) un alcano”,”isCorrect”:”1″},”dhvds”:{“id”:”dhvds”,”image”:””,”imageId”:””,”title”:”B) un acido carbossilico”},”6p2bl”:{“id”:”6p2bl”,”image”:””,”imageId”:””,”title”:”C) un estere”},”mf4d4″:{“id”:”mf4d4″,”image”:””,”imageId”:””,”title”:”D) un chetone”},”cuykr”:{“id”:”cuykr”,”image”:””,”imageId”:””,”title”:”E) un\u2019aldeide”}}}},”results”:{“rm7li”:{“id”:”rm7li”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Per riconoscere la famiglia alla quale appartiene un idrocarburo (alcani, alcheni, …

{“questions”:{“pmfkj”:{“id”:”pmfkj”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\np.san 2006 \r\n\r\n \r\nUn alcano \u00e8 un composto organico:\r\n“,”desc”:””,”hint”:””,”answers”:{“p3pyu”:{“id”:”p3pyu”,”image”:””,”imageId”:””,”title”:”A) costituito da carbonio, ossigeno e idrogeno”},”fhvy9″:{“id”:”fhvy9″,”image”:””,”imageId”:””,”title”:”B) costituito solo da idrogeno e carbonio”,”isCorrect”:”1″},”axl11″:{“id”:”axl11″,”image”:””,”imageId”:””,”title”:”C) con propriet\u00e0 simili agli alcali”},”ir87o”:{“id”:”ir87o”,”image”:””,”imageId”:””,”title”:”D) del quale non …

{“questions”:{“ayamu”:{“id”:”ayamu”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2011\r\n\r\n \r\nCome si chiama il gruppo alchilico che ha formula \u2013CH2CH2CH3?\r\n“,”desc”:””,”hint”:””,”answers”:{“bs1mq”:{“id”:”bs1mq”,”image”:””,”imageId”:””,”title”:”A) Propino”},”t8myq”:{“id”:”t8myq”,”image”:””,”imageId”:””,”title”:”B) Pronano”},”04uxf”:{“id”:”04uxf”,”image”:””,”imageId”:””,”title”:”C) Propene”},”wwzfq”:{“id”:”wwzfq”,”image”:””,”imageId”:””,”title”:”D) Propanale”},”dw5pj”:{“id”:”dw5pj”,”image”:””,”imageId”:””,”title”:”E) Propile”,”isCorrect”:”1″}}}},”results”:{“tw7rd”:{“id”:”tw7rd”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Analizziamo la formula:\r\n \u2013CH2CH2CH3\r\n vediamo a sinistra un trattino che indica la …

{“questions”:{“6h8lo”:{“id”:”6h8lo”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2000\r\n\r\n \r\nUn atomo di carbonio viene definito secondario quando:\r\n“,”desc”:””,”hint”:””,”answers”:{“q8dte”:{“id”:”q8dte”,”image”:””,”imageId”:””,”title”:”A) \u00e8 il secondo della catena carboniosa”},”6wyuc”:{“id”:”6wyuc”,”image”:””,”imageId”:””,”title”:”B) \u00e8 ibridato sp2“},”qf79j”:{“id”:”qf79j”,”image”:””,”imageId”:””,”title”:”C) presenta due valenze invece di quattro”},”kax9s”:{“id”:”kax9s”,”image”:””,”imageId”:””,”title”:”D) \u00e8 legato ad altri …

{“questions”:{“j9ryn”:{“id”:”j9ryn”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2008\r\n\r\n \r\nChe cosa si verifica se nella catena di un idrocarburo saturo si sostituisce un atomo di idrogeno con un gruppo funzionale?“,”desc”:””,”hint”:””,”answers”:{“xhm0s”:{“id”:”xhm0s”,”image”:””,”imageId”:””,”title”:”A) Cambiano le propriet\u00e0 fisiche della sostanza, …

{“questions”:{“0vmcg”:{“id”:”0vmcg”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2006\r\n\r\n \r\nQual \u00e8 la formula generale degli alcani? (n=1,2,3,4…)\r\n“,”desc”:””,”hint”:””,”answers”:{“ismd8”:{“id”:”ismd8″,”image”:””,”imageId”:””,”title”:”A) CnH2n\u22122“},”5w26v”:{“id”:”5w26v”,”image”:””,”imageId”:””,”title”:”B) CnH2n“},”t0whw”:{“id”:”t0whw”,”image”:””,”imageId”:””,”title”:”C) CnH2n\u22126“},”k2vnf”:{“id”:”k2vnf”,”image”:””,”imageId”:””,”title”:”D) CnH2n+2“,”isCorrect”:”1″},”n815v”:{“id”:”n815v”,”image”:””,”imageId”:””,”title”:”E) CnH4n“}}}},”results”:{“wzm4j”:{“id”:”wzm4j”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” La formula generale della serie degli alcani \u00e8 CnH2n+2.\r\n Nella serie troviamo cos\u00ec:\r\nMetano CH4\r\nEtano …

{“questions”:{“sxjxw”:{“id”:”sxjxw”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1998\r\n\r\n \r\nSoltanto una delle seguenti affermazioni a proposito della molecola del metano \u00e8 ERRATA. Quale?\r\n“,”desc”:””,”hint”:””,”answers”:{“54s64”:{“id”:”54s64″,”image”:””,”imageId”:””,”title”:”A) l’atomo di C \u00e8 ibridato sp3“},”0ng78”:{“id”:”0ng78″,”image”:””,”imageId”:””,”title”:”B) gli angoli di legame sono di circa …

{“questions”:{“a9v6f”:{“id”:”a9v6f”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\np.san 2012\r\n\r\n \r\nL\u2019acido carbonico \u00e8 un acido debole e insieme allo ione bicarbonato costituisce un sistema tampone presente nel sangue umano. Cosa accade se il pH del sangue scende …

{“questions”:{“8i1xt”:{“id”:”8i1xt”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\np.san 2009\r\n\r\n \r\nLe soluzioni tampone servono a:\r\n“,”desc”:””,”hint”:””,”answers”:{“eh54h”:{“id”:”eh54h”,”image”:””,”imageId”:””,”title”:”A) modificare il pH di una soluzione”},”xpidq”:{“id”:”xpidq”,”image”:””,”imageId”:””,”title”:”B) acidificare una soluzione”},”tn48p”:{“id”:”tn48p”,”image”:””,”imageId”:””,”title”:”C) mantenere la neutralit\u00e0 di una soluzione”},”oh7xr”:{“id”:”oh7xr”,”image”:””,”imageId”:””,”title”:”D) limitare le variazioni di pH di una …

{“questions”:{“joeri”:{“id”:”joeri”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\np.san 2005\r\n\r\n \r\nChe cos\u2019\u00e8 una soluzione tampone?\r\n“,”desc”:””,”hint”:””,”answers”:{“n2b7x”:{“id”:”n2b7x”,”image”:””,”imageId”:””,”title”:”A) una soluzione che assorbe acqua”},”gk05w”:{“id”:”gk05w”,”image”:””,”imageId”:””,”title”:”B) una soluzione che mantiene inalterato il valore del pH per piccole aggiunte di acido o base”,”isCorrect”:”1″},”fnoay”:{“id”:”fnoay”,”image”:””,”imageId”:””,”title”:”C) una …