Try Out PSTS Ganjil Kimia Kelas XI 2024-2025
Quiz
•
Chemistry
•
11th Grade
•
Practice Problem
•
Hard
Ali Sugandi
Used 2+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
1. Bila massa atom relative Fe = 56, S = 32, O = 16, maka massa rumus relative Fe2(SO4)3 adalah…..
1. Bila massa atom relative Fe = 56, S = 32, O = 16, maka massa rumus relative Fe2(SO4)3 adalah…..
104
152
192
248
400
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2. Jumlah partikel gas X2 sebanyak 6,02 . 1022 dan massanya 1,6 gram, maka massa molar gas X2 adalah…..
2. Jumlah partikel gas X2 sebanyak 6,02 . 1022 dan massanya 1,6 gram, maka massa molar gas X2 adalah…..
1,6 gram/mol
8 gram/mol
16 gram/mol
32 gram/mol
64 gram/mol
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
3. Berapakah jumlah mol dari 40 gram karat besi yang mempunyai rumus Fe2O3 (jika Ar Fe = 56, O = 16)…
3. Berapakah jumlah mol dari 40 gram karat besi yang mempunyai rumus Fe2O3 (jika Ar Fe = 56, O = 16)…
0,02 mol
0,25 mol
2,5 mol
0,2 mol
2,0 mol
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
4. Reaksi antara kalsium sebanyak 80 gram dengan 64 gram oksigen sesuai dengan persamaan reaksi berikut :
2Ca (s) + O2 (g) ---> 2 CaO (s)
4. Reaksi antara kalsium sebanyak 80 gram dengan 64 gram oksigen sesuai dengan persamaan reaksi berikut :
2Ca (s) + O2 (g) ---> 2 CaO (s)
Maka massa CaO (s) yang dihasilkan sebanyak …. gram
144 gram
104 gram
96 gram
84 gram
112 gram
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
5. Asam ascorbates merupakan senyawa kimia yang disebut vitamin C, memiliki sifat antioksidan dengan rumus kimia C6H8O6.
(Ar H = 1, C = 12, O = 16). Kadar unsur karbon dalam asam askorbat adalah….
5. Asam ascorbates merupakan senyawa kimia yang disebut vitamin C, memiliki sifat antioksidan dengan rumus kimia C6H8O6.
(Ar H = 1, C = 12, O = 16). Kadar unsur karbon dalam asam askorbat adalah….
87%
73%
58%
41%
4%
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
6. Diketahui persamaan reaksi: C(s) + 2H2(g) → CH4(g)
6. Diketahui persamaan reaksi: C(s) + 2H2(g) → CH4(g)
Jika volum H2 yang direaksikan 2,24 L pada keadaan STP,
maka jumlah partikel gas CH4 yang dihasilkan adalah…( 6,02 × 1023)
3,01 × 1021 molekul
6,01 × 1021 molekul
3,01 × 1022 molekul
6,02 × 1022 molekul
6,02 × 1023 molekul
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
7. Selama aktivitas fisik, asam laktat dibentuk di jaringan otot dan menimbulkan rasa nyeri. Analisis unsur menunjukkan bahwa 40,0% C, 6,71% H dan 53,3% O. Jika diketahui bahwa berat molekul senyawa yang terbentuk 90, maka rumus molekulnya adalah…
7. Selama aktivitas fisik, asam laktat dibentuk di jaringan otot dan menimbulkan rasa nyeri. Analisis unsur menunjukkan bahwa 40,0% C, 6,71% H dan 53,3% O. Jika diketahui bahwa berat molekul senyawa yang terbentuk 90, maka rumus molekulnya adalah…
CH2O
C3H6O3
C5H14O
CH2O2
C2H2O
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