
CHEM-01-Concentrazioni
Authored by Laura Tagnin
Chemistry
11th Grade
Used 5+ times

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14 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quanti millilitri di una soluzione 3,25 M di (NH4)2SO4(aq) devono essere usati, se sono necessari 8,60 g di questa sostanza per una reazione chimica?
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale delle seguenti soluzioni è più diluita?
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quale delle seguenti affermazioni è corretta?
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Un sale poco solubile, mescolandosi con l’acqua,
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una soluzione di glucosio viene preparata sciogliendo 15,2 g di glucosio, C6H12O6, in 250,0 g di acqua. Uno studente vuole preparare una soluzione di saccarosio (C12H22O11) con la stessa molalità. Quanti grammi di saccarosio dovrà aggiungere a 150,0 g di acqua? Motiva la risposta.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Una soluzione di nitrito di sodio viene preparata mescolando 3,25 g di NaNO2 con 12,0 g di acqua. La percentuale in massa di NaNO2 è pari a:
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Considera una soluzione 0,900 M di Al(NO3)2. Questa soluzione ha una concentrazione di ioni nitrato pari a:
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