
La quantità di sostanza (parte 1)
Quiz
•
Chemistry
•
6th - 10th Grade
•
Medium
Prova 01
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14 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
Una unità di massa atomica corrisponde a
1,66•10-27g
1,66•10-27kg
6,022•10-23g
6,022•10-23kg
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
L’Unità di massa atomica è
la dodicesima parte del C-12
la massa del C-12
la somma dei protoni e neutroni
la somma dei protoni ed elettroni
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
MA, la massa atomica relativa di un elemento
è detta anche massa atomica, o peso atomico
corrisponde con la massa assoluta
è data dal rapporto tra la massa assoluta ed il peso atomico
È detta anche massa molecolare
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
la massa atomica è la massa
assoluta rispetto all'atomo di C-12
relativa rispetto alla dodicesima parte di C-12
relativa rispetto all'atomo di C-12
di un atomo di un elemento
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Per massa atomica relativa si intende la massa di un atomo
espressa in grammi
espressa in mg
calcolata in rapporto a quella di un altro atomo preso come riferimento
misurata con la bilancia
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Calcola la massa molecolare di SO2
80 uma
48 uma
32 uma
64 uma
7.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
la massa molare di H2 è
1,008
4,032
2,016
2,16
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