Archives

{“questions”:{“x57q5”:{“id”:”x57q5″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2010\r\n\r\n \r\nIndicare l\u2019unica equazione bilanciata.\r\n“,”desc”:””,”hint”:””,”answers”:{“0e0q5”:{“id”:”0e0q5″,”image”:””,”imageId”:””,”title”:”A) N2 + 3H2 = 3 NH3“},”us8v5”:{“id”:”us8v5″,”image”:””,”imageId”:””,”title”:”B) 2 CaO = Ca + O2“},”ekxgf”:{“id”:”ekxgf”,”image”:””,”imageId”:””,”title”:”C) 3 KOH + 2 H3PO4 = K3PO4 + 3 H2O”},”szkts”:{“id”:”szkts”,”image”:””,”imageId”:””,”title”:”D) 2 …

{“questions”:{“lds9u”:{“id”:”lds9u”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2008\r\n\r\n \r\nIndicare quando la seguente reazione di ossido riduzione \u00e8 correttamente bilanciata: \r\nCu + HNO3 \u2192 Cu(NO3)2 + H2O + NO \r\n“,”desc”:””,”hint”:””,”answers”:{“hkuzg”:{“id”:”hkuzg”,”image”:””,”imageId”:””,”title”:”A) 3Cu + 4HNO3 \u2192 3Cu(NO3)2 + …

{“questions”:{“qkydn”:{“id”:”qkydn”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2007\r\n\r\n \r\nQuale delle seguenti reazioni \u00e8 CORRETTAMENTE bilanciata stechiometricamente?\r\n“,”desc”:””,”hint”:””,”answers”:{“fqc14”:{“id”:”fqc14″,”image”:””,”imageId”:””,”title”:”A) Na2SO3 + 2AgNO3 \u2192 Ag2SO3 + 2NaNO3“,”isCorrect”:”1″},”em76j”:{“id”:”em76j”,”image”:””,”imageId”:””,”title”:”B) Na2SO3 + AgNO3 \u2192 Ag2SO3 + NaNO3“},”73syj”:{“id”:”73syj”,”image”:””,”imageId”:””,”title”:”C) 2Na2SO3 + 2AgNO3 \u2192 Ag2SO3 …

{“questions”:{“2eou9”:{“id”:”2eou9″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2006\r\n\r\n \r\nIn una reazione bilanciata risultano uguali:\r\n“,”desc”:””,”hint”:””,”answers”:{“fatdb”:{“id”:”fatdb”,”image”:””,”imageId”:””,”title”:”A) gli indici dei reagenti e quelli dei prodotti “},”bcyxx”:{“id”:”bcyxx”,”image”:””,”imageId”:””,”title”:”B) gli atomi dei reagenti e quelli dei prodotti”},”s9qiq”:{“id”:”s9qiq”,”image”:””,”imageId”:””,”title”:”C) i numeri di ossidazione …

{“questions”:{“sls1n”:{“id”:”sls1n”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2006\r\n\r\n \r\nNella reazione (da bilanciare) : As2O3 + HCl \u2192 AsCl3 + H2O , i coefficienti stechiometrici\r\ndell\u2019equazione di reazione sono:\r\n“,”desc”:””,”hint”:””,”answers”:{“px2k9”:{“id”:”px2k9″,”image”:””,”imageId”:””,”title”:”A) 1-3 \u2192 2-3″},”x91wm”:{“id”:”x91wm”,”image”:””,”imageId”:””,”title”:”B) 1-2 \u2192 1-1″},”yx6b8″:{“id”:”yx6b8″,”image”:””,”imageId”:””,”title”:”C) 1-3 \u2192 …

{“questions”:{“dsh2u”:{“id”:”dsh2u”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 2006\r\n\r\n \r\nQuale delle seguenti reazioni \u00e8 CORRETTAMENTE bilanciata?\r\n“,”desc”:””,”hint”:””,”answers”:{“sr1h2”:{“id”:”sr1h2″,”image”:””,”imageId”:””,”title”:”A) KMnO4 + H2S + H2SO4 = K2SO4 + MnSO4 + S + H2O”},”w1wz3″:{“id”:”w1wz3″,”image”:””,”imageId”:””,”title”:”B) 2KMnO4 + 5H2S + 3H2SO4 = K2SO4 …

{“questions”:{“jq5be”:{“id”:”jq5be”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2005\r\n\r\n \r\nQuale delle seguenti reazioni \u00e8 correttamente bilanciata stechiometricamente?\r\n“,”desc”:””,”hint”:””,”answers”:{“ont34”:{“id”:”ont34″,”image”:””,”imageId”:””,”title”:”A) 2Al(OH)3 + 3H2SO4 \u2192 Al2(SO4)3 + 6H2O”,”isCorrect”:”1″},”2jqp9″:{“id”:”2jqp9″,”image”:””,”imageId”:””,”title”:”B) Al(OH)3 + 3H2SO4 \u2192 Al(SO4)3 + 6H2O”},”xgwis”:{“id”:”xgwis”,”image”:””,”imageId”:””,”title”:”C) 2Al(OH)3 + H2SO4 \u2192 Al2(SO4) …

{“questions”:{“og3da”:{“id”:”og3da”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2017 \r\n\r\n \r\nPer ottenere un sale si devono far reagire:\r\n“,”desc”:””,”hint”:””,”answers”:{“celrj”:{“id”:”celrj”,”image”:””,”imageId”:””,”title”:”A) un acido e un idrossido”,”isCorrect”:”1″},”hl603″:{“id”:”hl603″,”image”:””,”imageId”:””,”title”:”B) nessuna delle altre alternative \u00e8 corretta”},”9hib1″:{“id”:”9hib1″,”image”:””,”imageId”:””,”title”:”C) un idrossido e l’acqua”},”nzvt8″:{“id”:”nzvt8″,”image”:””,”imageId”:””,”title”:”D) un acido e …

{“questions”:{“ruy2t”:{“id”:”ruy2t”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2017 \r\n\r\n \r\nIl cesio \u00e8 il metallo alcalino pi\u00f9 elettropositivo, il fluoro l’alogeno pi\u00f9 elettronegativo.\r\nTra loro quindi:\r\n“,”desc”:””,”hint”:””,”answers”:{“fl0ns”:{“id”:”fl0ns”,”image”:””,”imageId”:””,”title”:”A) non posso formare legami”},”66pvk”:{“id”:”66pvk”,”image”:””,”imageId”:””,”title”:”B) formano legami covalenti”},”mn45u”:{“id”:”mn45u”,”image”:””,”imageId”:””,”title”:”C) formano legami ionici”,”isCorrect”:”1″},”20dt3″:{“id”:”20dt3″,”image”:””,”imageId”:””,”title”:”D) formano …

{“questions”:{“x780f”:{“id”:”x780f”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2015\r\n\r\n \r\nIl massimo numero di ossidazione del fosforo \u00e8:\r\n“,”desc”:””,”hint”:””,”answers”:{“6068y”:{“id”:”6068y”,”image”:””,”imageId”:””,”title”:”A) 5″,”isCorrect”:”1″},”mvv54″:{“id”:”mvv54″,”image”:””,”imageId”:””,”title”:”B) 3″},”0ff70″:{“id”:”0ff70″,”image”:””,”imageId”:””,”title”:”C) \u20132″},”at8ul”:{“id”:”at8ul”,”image”:””,”imageId”:””,”title”:”D) 2″},”3speo”:{“id”:”3speo”,”image”:””,”imageId”:””,”title”:”E) 4″}}}},”results”:{“fgiqk”:{“id”:”fgiqk”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” \r\nNon \u00e8 sempre facile ricordare tutti i numeri di ossidazione degli elementi chimici, anche …