

Stoikiometri 1
Flashcard
•
Chemistry
•
10th Grade
•
Practice Problem
•
Hard
YULIATI YULIATI
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15 questions
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1.
FLASHCARD QUESTION
Front
Sejumlah 3,2 gram gas CH4 dibakar dengan 16 gram O2 sesuai reaksi: CH4(g) + 2 O2(g) → CO2(g) + 2 H2O(l) Jika Ar C = 12, H = 1, dan O = 16, maka massa CO2 yang terbentuk adalah … .
Back
8,8 gram
2.
FLASHCARD QUESTION
Front
Pada reaksi 27 gram kalsium dengan 5,6 gram nitrogen dihasilkan kalsium nitrida menurut persamaan reaksi: 3 Ca(S) + N2 → Ca3N2(S). Massa kalsium nitrida yang dihasilkan …. (Ar Ca = 40, N = 14)
Back
29,6 gram
3.
FLASHCARD QUESTION
Front
Sebanyak 2,62 gram hidrat dari kalsium sulfat dipanaskan sampai semua air kristalnya menguap sesuai persamaan reaksi; CaSO4.H2O(s)→CaSO4(s) + x H2O(g) Jika massa padatan kalsium sulfat yang terbentuk adalah 1,36 gram, rumus senyawa hidrat tersebut adalah .... Options: CaSO4. 3H2O, CaSO4. 4H2O, CaSO4. 5H2O, CaSO4. 6H2O, CaSO4. 7H2O
Back
CaSO4. 7H2O
4.
FLASHCARD QUESTION
Front
Volume gas H2 yang terbentuk dari 4 gram Mg dan 10 mL larutan HCl 2M dalam keadaan standar adalah ....
Back
0,224 L
5.
FLASHCARD QUESTION
Front
Serbuk besi sebanyak 28 gram (Ar Fe = 56) direaksikan dengan 20 gram belerang (Ar S = 32) sesuai persamaan reaksi kimia: Fe(s) + S(s) → FeS(s), Zat yang tersisa sesudah reaksi berakhir adalah …. Options: 4 gr S, 6 gr S, 8 gr Fe, 10 gr Fe, 14 gr Fe
Back
4 gr S
6.
FLASHCARD QUESTION
Front
Volume 78 gram gas C2H4 jika pada kondisi suhu dan tekanan yang sama 5 L gas C3H8 memiliki masa 176 gram adalah .... (Ar C2H4 adalah 26 dan C3H8 adalah 44)
Back
3,75 liter
7.
FLASHCARD QUESTION
Front
Sebanyak 10 gram padatan kalium klorat dipanaskan dalam wadah tertutup, sehingga terjadi reaksi sesuai persamaan : 2 KClO3(s) → 2 KCl(s)+ 3 O2(g) Massa zat yang dihasilkan adalah ....
Back
sama dengan 10 gram
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