Archives

{“questions”:{“ene1e”:{“id”:”ene1e”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2010\r\n\r\n \r\nChe quantit\u00e0 di acqua si forma dall\u2019ossidazione di 22,4 litri di metano (considerati a 0 \u00b0C e 1 atm)?\r\n“,”desc”:””,”hint”:””,”answers”:{“09sjd”:{“id”:”09sjd”,”image”:””,”imageId”:””,”title”:”A) 22,4 kg “},”678h9”:{“id”:”678h9″,”image”:””,”imageId”:””,”title”:”B) 18 g”},”hdaa7″:{“id”:”hdaa7″,”image”:””,”imageId”:””,”title”:”C) 36 kg”},”icsgs”:{“id”:”icsgs”,”image”:””,”imageId”:””,”title”:”D) 36 …

{“questions”:{“x358l”:{“id”:”x358l”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 2000 \r\n\r\n \r\nSe si fanno reagire otto moli di H2 con quattro moli di O2, le moli di acqua che si formano sono al massimo:\r\n“,”desc”:””,”hint”:””,”answers”:{“b7yyr”:{“id”:”b7yyr”,”image”:””,”imageId”:””,”title”:”A) 12″},”1fgnm”:{“id”:”1fgnm”,”image”:””,”imageId”:””,”title”:”B) 4″},”r356f”:{“id”:”r356f”,”image”:””,”imageId”:””,”title”:”C) 8″,”isCorrect”:”1″},”vm38b”:{“id”:”vm38b”,”image”:””,”imageId”:””,”title”:”D) …

{“questions”:{“cm7v0”:{“id”:”cm7v0″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nMedicina 1999 \r\n\r\n \r\nLa reazione del propano C3H8 con ossigeno O2 (combustione) avviene con formazione di\r\nCO2 e H2O; per bruciare una mole di propano, le moli di ossigeno necessarie …

{“questions”:{“aboj0”:{“id”:”aboj0″,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nOdontoiatria 1997\r\n\r\n \r\nQuante moli di CO2 si formano nella combustione completa di tre moli di CH4?\r\n“,”desc”:””,”hint”:””,”answers”:{“8ykz9”:{“id”:”8ykz9″,”image”:””,”imageId”:””,”title”:”A) 1″},”ce001″:{“id”:”ce001″,”image”:””,”imageId”:””,”title”:”B) 1,5″},”qzo3q”:{“id”:”qzo3q”,”image”:””,”imageId”:””,”title”:”C) 2″},”wj40x”:{“id”:”wj40x”,”image”:””,”imageId”:””,”title”:”D) 3″,”isCorrect”:”1″},”gnuvh”:{“id”:”gnuvh”,”image”:””,”imageId”:””,”title”:”E) Nessuna, perche’ il metano non brucia”}}}},”results”:{“ejbkt”:{“id”:”ejbkt”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” Dobbiamo scrivere la …

{“questions”:{“8amgx”:{“id”:”8amgx”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2010\r\n\r\n \r\nUna mole di idrogeno (H2 gas) reagisce con una mole di cloro (Cl2 gas) per formare acido cloridrico (HCl gas). Che volume di HCl (in litri) si …

{“questions”:{“mlxdd”:{“id”:”mlxdd”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2014 \r\n\r\n \r\nPer decomposizione termica del nitrato di sodio si ottengono sia nitrito di sodio solido sia ossigeno molecolare gassoso: \r\n\r\nNaNO3 \u2192 NaNO2 + O2. \r\n\r\nIndividuare la reazione …

{“questions”:{“xk4qp”:{“id”:”xk4qp”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2012 \r\n\r\n \r\nQuali sono gli esatti coefficienti da utilizzare per bilanciare la seguente reazione redox:\r\nK2Cr2O7 + SO2 + H2SO4 = Cr2(SO4)3 + K2SO4 + H2O?\r\n“,”desc”:””,”hint”:””,”answers”:{“qfdt0”:{“id”:”qfdt0″,”image”:””,”imageId”:””,”title”:”A) 1, 3, 1, …

{“questions”:{“le04l”:{“id”:”le04l”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2004 \r\n\r\n \r\nSe reagiscono 2 moli di acido cloridrico con 1 mole di idrossido di bario,\r\nquante moli di cloruro di bario si formano\r\n“,”desc”:””,”hint”:””,”answers”:{“lgphz”:{“id”:”lgphz”,”image”:””,”imageId”:””,”title”:”A) 2″},”fie1j”:{“id”:”fie1j”,”image”:””,”imageId”:””,”title”:”B) 1″,”isCorrect”:”1″},”af9zj”:{“id”:”af9zj”,”image”:””,”imageId”:””,”title”:”C) 0,5″},”wiwr3″:{“id”:”wiwr3″,”image”:””,”imageId”:””,”title”:”D) 3″},”n6ld4″:{“id”:”n6ld4″,”image”:””,”imageId”:””,”title”:”E) 6″}}}},”results”:{“mcm3o”:{“id”:”mcm3o”,”title”:””,”image”:””,”imageId”:””,”min”:”0″,”max”:”1″,”desc”:” …

{“questions”:{“j22xe”:{“id”:”j22xe”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nProf.san 2004\r\n\r\n \r\nI coefficienti stechiometrici della reazione Ca(OH)2 +H3PO4 \u21d2 Ca3(PO4)2+H2O\r\nsono:\r\n“,”desc”:””,”hint”:””,”answers”:{“7zpn6”:{“id”:”7zpn6″,”image”:””,”imageId”:””,”title”:”A) 2 + 3 = 2 + 6″},”tsxkl”:{“id”:”tsxkl”,”image”:””,”imageId”:””,”title”:”B) 3 + 2 = 4 + 12″},”x7e5e”:{“id”:”x7e5e”,”image”:””,”imageId”:””,”title”:”C) 2 + 3 = …

{“questions”:{“5uvtl”:{“id”:”5uvtl”,”mediaType”:”image”,”answerType”:”text”,”imageCredit”:””,”image”:””,”imageId”:””,”video”:””,”imagePlaceholder”:””,”imagePlaceholderId”:””,”title”:” \r\nVeterinaria 2018\r\n\r\n \r\nQuali sono i valori da attribuire ai coefficienti a, b, c per bilanciare correttamente la seguente reazione chimica ?\r\n\r\n \r\naNH3 + bO2 \u2192 cNO + 6H2O \r\n“,”desc”:””,”hint”:””,”answers”:{“d63z8”:{“id”:”d63z8″,”image”:””,”imageId”:””,”title”:”A) …