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Authored by I Yudana
Chemistry
11th Grade

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18 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Jika massa atom relatif Ar : N = 14; H = 1 dan konstanta Avogadro = 6 × 1023, dalam 8 gram N2H4
ada atom nitrogen sebanyak...atom
3 × 1023
6 × 1022
1.2 × 1023
1.5 × 1023
3 x 1022
2.
MULTIPLE CHOICE QUESTION
30 sec • 5 pts
Berapa massa atom relatif dari atom O?
1
12
16
8
3.
MULTIPLE CHOICE QUESTION
2 mins • 10 pts
Berapa gram massa unsur oksigen dalam 11 gram karbon dioksida? (Ar C=12, O=16)
3 gram
11 gram
8 gram
4 gram
4.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Jika diketahui Ar C=12, H=1, dan O=16, berapa gram massa 0,5 mol CH3COOH?
60 gram
30 gram
6 gram
3 gram
5.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Berapa liter volume dari 3,5 gram larutan NH4OH (Ar N=14, O=16, H=1) bila diukur suhu 0oC pada tekanan 1 atm?
22,4 liter
2,24 liter
11,2 liter
1,12 liter
6.
MULTIPLE CHOICE QUESTION
3 mins • 10 pts
Hitunglah volume dari 3,2 gram gas O2 diukur pada suhu 27oC , 1 atm. (Ar O=16; R=0,082 L atm/mol K; T= ... + 273K)
2,46 liter
2,24 liter
4,92 liter
1,12 liter
7.
MULTIPLE CHOICE QUESTION
5 mins • 10 pts
Berikut ini yang mengandung jumlah molekul terkecil adalah ... (Ar O=16, N=14, C=12, H=1)
2 gram N2
2 gram CH4
4 gram O2
8 gram CO2
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