
konsep mol
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Chemistry
•
University
•
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restina baringbing
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10 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Bila tetapan Avogadro = L dan massa molar gas amonia = Mr g/mol, maka dalam 10 mol gas amonia terdapat molekul sebanyak....
10
10 L
L/10Mr
10 Mr L
10 L/Mr
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika pada STP volum dari 4,25 gram gas sebesar 2,8 liter, maka massa molekul relatif gas tersebut adalah....
A. 26
B. 28
C. 30
D. 32
E. 34
26
28
30
32
34
3.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
5 mol gas N2 berada pada suhu 27°C pada tekanan 1,5 atm. Volume gas N2 tersebut adalah....
A. 22,40 liter
B. 24,80 liter
C. 41,00 liter
D. 56,20 liter
E. 82,00 liter
22,4 L
24,8 L
41 L
56,2 L
82 L
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
14 gram suatu pada STP (ooC,1atm ) mempunyai volume 11,2 L ,maka massa molekul relatif gas tersebut adalah....
14
24
28
32
44
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Gas propana (C3H8) terbakar menurut persamaan reaksi
C3H8 (g) + O2 (g) ------> CO2(g) + H2O(l) (belum setara)
Volume oksigen (T,P) yang diperlukan untuk membakar sempurna 2 liter propana ( T,P) adalah....
5 liter
10 L
15 L
30 L
35 L
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Di ketahui massa atom relatif (Ar) C = 12; O = 16 ; K = 39) , maka massa 2 mol K2CO3 adalah....
138 gram
200 gram
250 gram
276 gram
300 gram
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Volume 7,5 gram gas NO pada suhu 0°C dan tekanan 1 atmosfer adalah….(Ar N=14;O=16)
5,6 L
11,2 L
22,0 L
22,4 L
44,0 L
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