Mol
Quiz
•
Chemistry
•
9th Grade
•
Hard
Anna Mestres
Used 61+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Un mol equival a...
6,022·1023
una unitat de massa
el que pesen 6,022·1023 partícules
totes les opcions són correctes
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
La massa atòmica/molecular i la massa molar...
són el mateix
tenen el mateix valor per a una substància, però la primera es mesura en "u" i la segona en "grams"
la molar és sempre 6,022·1023
només existeix la segona, la primera no existeix
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sabent que la massa atòmica de l'hidrogen és 1 u, la del sofre 32 u i la de l'oxigen 16 u, la massa molecular del H2SO4 és...
98 u
98 g
6,022·1023
194 u
194 g
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sabent que la massa molecular del CO2 és de 44 u, podem dir:
La massa molar del CO2 és 44 g
La massa de 2 mols de CO2 és 88 g
La massa de 6,022·1023 molècules de CO2 és 44 g
Totes les opcions són correctes
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
En 5 mols d'aigua hi ha...
5 mols d'àtoms d'oxigen
5 mols d'àtoms d'hidrogen
5 mols d'àtoms
6,022·1023 àtoms
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
En 5 mols d'aigua hi ha...
3,011·1025 molècules d'aigua
3,011·1023 molècules d'aigua
6,022·1023 molècules d'aigua
3,011·1024 molècules d'aigua
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Si tenim 135 g d'aigua, aleshores tenim...
7,5 mols d'aigua
8,13·1025 mols d'aigua
2430 mols d'aigua
cap resposta és correcta
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