
Stechiometria - podsumowanie
Authored by Agata Piotrowska
Chemistry
10th Grade
9 Questions
Used 8+ times

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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Reakcja przebiega wg równania 2Al + 3S = Al2S3 . Jeśli do reakcji zużyto 13,5 g Al, to ile g siarczku glinu (Al2S3) otrzymano?
37,5 g
75g
150g
47,5g
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Mol to jednostka:
liczności materii
gęstości materii
masy materii
masy molowej
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Oblicz, jaką objętość zajmuje w warunkach normalnych 3,5 mola siarkowodoru.
78,4 dm3
22,4 dm3
44,8 dm3
2,24 dm3
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Oblicz, jaką liczbę moli w warunkach normalnych stanowi 1 dm3 pary wodnej.
2 mol
1 mol
0,6 mol
0,045 mol
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Ustal stosunek masowy pierwiastków chemicznych w związku chemicznym o wzorze sumarycznym NO.
7 : 8
14 : 16
28 : 32
1 : 2
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Ustal wzór empiryczny związku chemicznego o podanym składzie procentowym: 70,91% potasu i 29,09% tlenu.
KO
KO2
K2O3
K2O
7.
REORDER QUESTION
2 mins • 1 pt
Uszereguj substancje według ich malejącej masy wyrażonej w gramach:
2 mole atomów helu
0,5 mola cząsteczek wody
0,1 mola węglanu wapnia
0,5 mola cząsteczek wodoru
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