IPA 10 S1 HAL 053
Quiz
•
Social Studies
•
9th - 12th Grade
•
Practice Problem
•
Hard
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5 questions
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1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 0,555 gram sampel magnesium dibakar dalam 1,315 gram gas oksigen untuk menghasilkan magnesium oksida. Setelah reaksi terjadi, diperoleh massa oksigen yang tidak bereaksi sebanyak 1,015 gram. Berapakah massa magnesium oksida yang terbentuk?
1,25 gram
0,45 gram
0,855 gram
0,765 gram
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Berapa gram air (H2 O) yang dihasilkan dari reaksi pembakaran 4 gram H2 dengan O2 ? (Ar H = 1; O = 16)
36 gram
27 gram
15 gram
30 gram
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Sebanyak 6,4 gram gas metana dibakar sempurna dengan 32 gram gas oksigen. Berapakah jumlah molekul CO2 yang dihasilkan dari reaksi pembakaran tersebut? (Ar C = 12; H = 1; O =16)
6,4 ×10²⁵ molekul
6,64 ×10⁻²⁵ molekul
6,62 ×10⁻⁷ molekul
4,66 ×10⁹ molekul
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Satu molekul air (H2 O) terdapat 6,022 × 1023 molekul H2 O. Ada berapa atom dalam 1 mol air tersebut?
1,8060 × 10⁹atom
1,86 × 10⁷ atom
1,86 × 10⁻²⁴ atom
1,806 × 10²⁴ atom
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Pada suhu dan tekanan yang sama sebanyak 2 L gas nitrogen (N₂) tepat bereaksi dengan gas H₂ membentuk gas NH₃ (amonia). Berapa volume gas NH₃ yang dihasilkan?
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