Archives

{“questions”:{“ifqrl”:{“id”:”ifqrl”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2016\r\n\r\n \r\nLa somma algebrica dei numeri di ossidazione degli atomi di NH4+ \u00e8:\r\n“,”desc”:””,”hint”:””,”answers”:{“6niec”:{“id”:”6niec”,”image”:””,”imageId”:””,”title”:”A) +1″,”isCorrect”:”1″},”5smtg”:{“id”:”5smtg”,”image”:””,”imageId”:””,”title”:”B) +4″},”plq0i”:{“id”:”plq0i”,”image”:””,”imageId”:””,”title”:”C) \u20134″},”ev2kc”:{“id”:”ev2kc”,”image”:””,”imageId”:””,”title”:”D) \u20131″},”t9ozv”:{“id”:”t9ozv”,”image”:””,”imageId”:””,”title”:”E) 0″}}}},”results”:{“9s6bl”:{“id”:”9s6bl”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nSi tratta dello ione ammonio NH4+.\r\n\r\n \r\nVale la regola:In uno …

{“questions”:{“x4u1x”:{“id”:”x4u1x”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2004 \r\n\r\n \r\nIl numero di ossidazione del C in H2CO3 \u00e8 :\r\n“,”desc”:””,”hint”:””,”answers”:{“omu8v”:{“id”:”omu8v”,”image”:””,”imageId”:””,”title”:”A) – 4″},”sb0p9″:{“id”:”sb0p9″,”image”:””,”imageId”:””,”title”:”B) + 4″,”isCorrect”:”1″},”vubcc”:{“id”:”vubcc”,”image”:””,”imageId”:””,”title”:”C) + 2″},”9b1h4″:{“id”:”9b1h4″,”image”:””,”imageId”:””,”title”:”D) + 6″},”5dlrk”:{“id”:”5dlrk”,”image”:””,”imageId”:””,”title”:”E) – 2″}}}},”results”:{“mbzq2”:{“id”:”mbzq2″,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nL ‘acido carbonico H2CO3 deriva dalla …

{“questions”:{“8pnpi”:{“id”:”8pnpi”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2018\r\n\r\n \r\nQuale tra le seguenti affermazioni NON \u00e8 corretta:\r\n“,”desc”:””,”hint”:””,”answers”:{“c03i2”:{“id”:”c03i2″,”image”:””,”imageId”:””,”title”:”A) lo ione cloruro ha sempre numero di ossidazione -1″},”lt0iw”:{“id”:”lt0iw”,”image”:””,”imageId”:””,”title”:”B) l\u2019ossigeno pu\u00f2 avere numero di ossidazione -1″},”wvl4u”:{“id”:”wvl4u”,”image”:””,”imageId”:””,”title”:”C) il fluoro ha …

{“questions”:{“8ei43”:{“id”:”8ei43″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2014 \r\n\r\n \r\nQual \u00e8 il numero di ossidazione del cromo nel composto Al2(CrO4)3 ?\r\n“,”desc”:””,”hint”:””,”answers”:{“ljw6r”:{“id”:”ljw6r”,”image”:””,”imageId”:””,”title”:”A) +6″,”isCorrect”:”1″},”23yfo”:{“id”:”23yfo”,”image”:””,”imageId”:””,”title”:”B) +2″},”lzxfi”:{“id”:”lzxfi”,”image”:””,”imageId”:””,”title”:”C) +4″},”3hsvl”:{“id”:”3hsvl”,”image”:””,”imageId”:””,”title”:”D) \u22124″},”07ear”:{“id”:”07ear”,”image”:””,”imageId”:””,”title”:”E) \u22126″}}}},”results”:{“mjjrg”:{“id”:”mjjrg”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nPer effettuare il calcolo si tiene presente la regola …

{“questions”:{“06qrf”:{“id”:”06qrf”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2013 \r\n\r\n \r\nQui di seguito vengono elencati alcuni composti del cloro:\r\nNaClO, HClO2, ClO2, ClF3, HClO3\r\nQuali numeri di ossidazione del cloro sono presenti in questi composti?\r\n“,”desc”:””,”hint”:””,”answers”:{“uqdqe”:{“id”:”uqdqe”,”image”:””,”imageId”:””,”title”:”A) +2, +3, +4, …

{“questions”:{“xejpt”:{“id”:”xejpt”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2011 \r\n\r\n \r\nIl numero di ossidazione dell\u2019ossigeno nella molecola O2 \u00e8:\r\n“,”desc”:””,”hint”:””,”answers”:{“5rwvs”:{“id”:”5rwvs”,”image”:””,”imageId”:””,”title”:”A) +2 “},”e5yby”:{“id”:”e5yby”,”image”:””,”imageId”:””,”title”:”B) \u20132″},”c3nnp”:{“id”:”c3nnp”,”image”:””,”imageId”:””,”title”:”C) 0″,”isCorrect”:”1″},”jad6i”:{“id”:”jad6i”,”image”:””,”imageId”:””,”title”:”D) \u20134″},”wtdch”:{“id”:”wtdch”,”image”:””,”imageId”:””,”title”:”E) +6″}}}},”results”:{“rfml2”:{“id”:”rfml2″,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nLa prima regola relativa ai numeri di ossidazione riguarda le sostanze …

{“questions”:{“wjnrr”:{“id”:”wjnrr”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2010\r\n\r\n \r\nIndicare il numero di ossidazione del cromo nel dicromato di potassio (K2Cr2O7).\r\n“,”desc”:””,”hint”:””,”answers”:{“a07zp”:{“id”:”a07zp”,”image”:””,”imageId”:””,”title”:”A) -6 “},”5onhi”:{“id”:”5onhi”,”image”:””,”imageId”:””,”title”:”B) +6″,”isCorrect”:”1″},”os27y”:{“id”:”os27y”,”image”:””,”imageId”:””,”title”:”C) -5″},”p6yds”:{“id”:”p6yds”,”image”:””,”imageId”:””,”title”:”D) +5″},”6eswf”:{“id”:”6eswf”,”image”:””,”imageId”:””,”title”:”E) +3″}}}},”results”:{“1y310”:{“id”:”1y310″,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nPer effettuare il calcolo si tiene presente la regola …

{“questions”:{“uxb54”:{“id”:”uxb54″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2007 \r\n\r\n \r\nIn quale dei seguenti composti il carbonio presenta un numero di ossidazione negativo?\r\n“,”desc”:””,”hint”:””,”answers”:{“j9k4l”:{“id”:”j9k4l”,”image”:””,”imageId”:””,”title”:”A) C2H6“,”isCorrect”:”1″},”tqwvv”:{“id”:”tqwvv”,”image”:””,”imageId”:””,”title”:”B) C6H12O6“},”2009g”:{“id”:”2009g”,”image”:””,”imageId”:””,”title”:”C) CCl4“},”tnzlx”:{“id”:”tnzlx”,”image”:””,”imageId”:””,”title”:”D) CHCl3“},”4kyv0”:{“id”:”4kyv0″,”image”:””,”imageId”:””,”title”:”E) CO”}}}},”results”:{“qeeh2”:{“id”:”qeeh2″,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nCalcoliamo il numero di ossidazione di tutti i …

{“questions”:{“cu9ik”:{“id”:”cu9ik”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2006 \r\n\r\n \r\nA cosa corrisponde il numero di ossidazione di un elemento?\r\n“,”desc”:””,”hint”:””,”answers”:{“yfgdn”:{“id”:”yfgdn”,”image”:””,”imageId”:””,”title”:”A) Al valore di elettronegativit\u00e0 dell\u2019elemento”},”hf4q2″:{“id”:”hf4q2″,”image”:””,”imageId”:””,”title”:”B) Al numero di protoni presenti nel nucleo dell\u2019elemento”},”1a4jd”:{“id”:”1a4jd”,”image”:””,”imageId”:””,”title”:”C) Al numero complessivo …

{“questions”:{“98kw0”:{“id”:”98kw0″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2007 \r\n\r\n \r\nIndicare il composto in cui l’atomo di cloro ha numero di ossidazione maggiore:\r\n“,”desc”:””,”hint”:””,”answers”:{“x67uk”:{“id”:”x67uk”,”image”:””,”imageId”:””,”title”:”A) HClO2“},”tngxr”:{“id”:”tngxr”,”image”:””,”imageId”:””,”title”:”B) HCl”},”cm4h7″:{“id”:”cm4h7″,”image”:””,”imageId”:””,”title”:”C) NaCl”},”d1nr6″:{“id”:”d1nr6″,”image”:””,”imageId”:””,”title”:”D) CCl4“},”8vzen”:{“id”:”8vzen”,”image”:””,”imageId”:””,”title”:”E) HClO4“,”isCorrect”:”1″}}}},”results”:{“n2xes”:{“id”:”n2xes”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nIl cloro Cl possiede solamente diversi numeri di …