Final test konsep mol & stoikiometri

Quiz
•
Chemistry
•
10th Grade
•
Hard
Laila B
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jika diketahui Ar S = 32, O = 16, massa dari 0,5 mol gas SO2 adalah...
96
64
48
32
24
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jumlah molekul dalam 0,5 mol NO2 adalah...
0,5 × 1023 molekul
1,5 × 1023 molekul
2,0 × 1023 molekul
3,0 × 1023 molekul
4,5 × 1023 molekul
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Jumlah molekul O2 yang terdapat dalam 5,6 liter (STP) adalah...
1,505 × 1023 molekul
12,04 × 1023 molekul
3,01 × 1023 molekul
18,06 × 1023 molekul
6,02 × 1023 molekul
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Volume dari 2,8 gram gas N2 (Ar N = 14) yang diukur pada 25°C dan 0,5 atm adalah...
4,89 liter
22,4 liter
24,44 liter
24,25 liter
30,0 liter
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Massa dari 4,48 liter gas X2 pada keadaan standar (STP) adalah 14,2 gram. Mr dari unsur X tersebut adalah...
35,5
71
105,5
142
213
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pada suhu 25℃ dan tekanan 1atm, sebanyak x mol gas O2 memiliki volume 10liter. Pada suhu dan tekanan yang sama, jumlah mol gas N2 dalam 20liter adalah...
x mol
2x mol
4x mol
6x mol
8x mol
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam 100gram senyawa terdapat 40% kalsium , 12% karbon , dan 48% oksigen. Jika Ar Ca = 40, C = 12, O = 16, maka rumus empiris senyawa tersebut adalah…
CaCO
CaCO2
CaCO3
Ca2CO3
CaC2O
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