Archives

{“questions”:{“vba0c”:{“id”:”vba0c”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2013 \r\n\r\n \r\nConsiderando il numero di ossidazione dei reagenti coinvolti, quali delle seguenti reazioni sono ossidoriduzioni? \r\n 1) Cl2 + 2KBr \u279d 2KCl + Br22) 2Na + H2 …

{“questions”:{“dyaos”:{“id”:”dyaos”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2012\r\n\r\n \r\nSe in una reazione gli ioni Ag+ in soluzione si trasformano in atomi del metallo, ci\u00f2 significa che gli ioni Ag+:\r\n“,”desc”:””,”hint”:””,”answers”:{“yhsr2”:{“id”:”yhsr2″,”image”:””,”imageId”:””,”title”:”A) agiscono da ossidanti”,”isCorrect”:”1″},”6ybal”:{“id”:”6ybal”,”image”:””,”imageId”:””,”title”:”B) si ossidano”},”ma34d”:{“id”:”ma34d”,”image”:””,”imageId”:””,”title”:”C) perdono …

{“questions”:{“uvcif”:{“id”:”uvcif”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2011\r\n\r\n \r\nIn una reazione in cui PbCl2 si trasforma in PbCl4, si pu\u00f2 affermare che:\r\n“,”desc”:””,”hint”:””,”answers”:{“trkr7”:{“id”:”trkr7″,”image”:””,”imageId”:””,”title”:”A) il piombo si \u00e8 ridotto”},”9ew2h”:{“id”:”9ew2h”,”image”:””,”imageId”:””,”title”:”B) il piombo si \u00e8 ossidato”,”isCorrect”:”1″},”hypgf”:{“id”:”hypgf”,”image”:””,”imageId”:””,”title”:”C) entrambi gli elementi …

{“questions”:{“6c4u7”:{“id”:”6c4u7″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2009 \r\n\r\n \r\nUna reazione di ossidazione consiste nella:\r\n“,”desc”:””,”hint”:””,”answers”:{“j3gw3”:{“id”:”j3gw3″,”image”:””,”imageId”:””,”title”:”A) acquisizione di elettroni “},”pl5qc”:{“id”:”pl5qc”,”image”:””,”imageId”:””,”title”:”B) perdita di protoni”},”skqw6″:{“id”:”skqw6″,”image”:””,”imageId”:””,”title”:”C) perdita di neutroni”},”yoalz”:{“id”:”yoalz”,”image”:””,”imageId”:””,”title”:”D) perdita di elettroni”,”isCorrect”:”1″},”ekki8″:{“id”:”ekki8″,”image”:””,”imageId”:””,”title”:”E) acquisizione di protoni”}}}},”results”:{“u7xmh”:{“id”:”u7xmh”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Una ossidazione \u00e8 una …

{“questions”:{“6hqvq”:{“id”:”6hqvq”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2009\r\n\r\n \r\nData la reazione Zn + Cu2+ = Zn2+ + Cu \u00e8 corretto dire che:\r\n“,”desc”:””,”hint”:””,”answers”:{“vur3j”:{“id”:”vur3j”,”image”:””,”imageId”:””,”title”:”A) Cu2+ \u00e8 l\u2019agente ossidante”,”isCorrect”:”1″},”fzsoj”:{“id”:”fzsoj”,”image”:””,”imageId”:””,”title”:”B) Zn acquista elettroni”},”fzljs”:{“id”:”fzljs”,”image”:””,”imageId”:””,”title”:”C) Zn \u00e8 l\u2019agente ossidante”},”9xosb”:{“id”:”9xosb”,”image”:””,”imageId”:””,”title”:”D) Zn viene …

{“questions”:{“znbm1”:{“id”:”znbm1″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2009 \r\n\r\n \r\nUn agente ossidante \u00e8 una sostanza che:\r\n“,”desc”:””,”hint”:””,”answers”:{“9iuut”:{“id”:”9iuut”,”image”:””,”imageId”:””,”title”:”A) sviluppa ossigeno “},”rh1qw”:{“id”:”rh1qw”,”image”:””,”imageId”:””,”title”:”B) perde elettroni”},”kbxps”:{“id”:”kbxps”,”image”:””,”imageId”:””,”title”:”C) acquista elettroni”,”isCorrect”:”1″},”9dv3r”:{“id”:”9dv3r”,”image”:””,”imageId”:””,”title”:”D) origina un ossido”},”ogxv3″:{“id”:”ogxv3″,”image”:””,”imageId”:””,”title”:”E) acquista protoni”}}}},”results”:{“vl0dg”:{“id”:”vl0dg”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Una specie \u00e8 ossidante se permette ad …

{“questions”:{“riyc3”:{“id”:”riyc3″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2008 \r\n\r\n \r\nUna specie si dice riducente quando: \r\n“,”desc”:””,”hint”:””,”answers”:{“p8nkt”:{“id”:”p8nkt”,”image”:””,”imageId”:””,”title”:”A) acquista elettroni “},”qbs9u”:{“id”:”qbs9u”,”image”:””,”imageId”:””,”title”:”B) cede elettroni “,”isCorrect”:”1″},”eqsok”:{“id”:”eqsok”,”image”:””,”imageId”:””,”title”:”C) ossida un\u2019altra specie “},”1u8bv”:{“id”:”1u8bv”,”image”:””,”imageId”:””,”title”:”D) acquista ioni “},”yzl2o”:{“id”:”yzl2o”,”image”:””,”imageId”:””,”title”:”E) si trasforma in un metallo “}}}},”results”:{“ztcgb”:{“id”:”ztcgb”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” …

{“questions”:{“4pu5e”:{“id”:”4pu5e”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2008\r\n\r\n \r\nIl ferro allo stato elementare (Fe) ha numero di ossidazione uguale a: \r\n“,”desc”:””,”hint”:””,”answers”:{“e96fc”:{“id”:”e96fc”,”image”:””,”imageId”:””,”title”:”A) zero “,”isCorrect”:”1″},”7fnms”:{“id”:”7fnms”,”image”:””,”imageId”:””,”title”:”B) \u20123 “},”ooi05”:{“id”:”ooi05″,”image”:””,”imageId”:””,”title”:”C) \u20122 “},”qtpbv”:{“id”:”qtpbv”,”image”:””,”imageId”:””,”title”:”D) +2 “},”f9pjl”:{“id”:”f9pjl”,”image”:””,”imageId”:””,”title”:”E) +3 “}}}},”results”:{“z9eg7”:{“id”:”z9eg7″,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” In base alle regole …

{“questions”:{“60fda”:{“id”:”60fda”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2008\r\n\r\n \r\nIn una reazione chimica gli ioni Ag+ in soluzione si trasformano in atomi del metallo. Ci\u00f2 significa che gli ioni Ag+

{“questions”:{“z5nu0”:{“id”:”z5nu0″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2008\r\n\r\n \r\nIn una pila Daniel il ponte salino serve a \u2026\r\n“,”desc”:””,”hint”:””,”answers”:{“2y25b”:{“id”:”2y25b”,”image”:””,”imageId”:””,”title”:”A) garantire che le due soluzioni abbiano valori costanti di pressione”},”pq9zg”:{“id”:”pq9zg”,”image”:””,”imageId”:””,”title”:”B) garantire che le due soluzioni abbiano la …