RUMUS KIMIA

Quiz
•
Chemistry
•
10th Grade
•
Medium
rini deliana
Used 3+ times
FREE Resource
5 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam praktikum, sekelompok siswa membakar secara sempurna 46 gram senyawa karbon yang terdiri atas unsur C, H, dan O. Pembakaran tersebut menghasilkan 88 gram CO2 dan 54 gram uap air (Ar H = 1; C = 12; O = 16). Rumus empiris senyawa yang dibakar adalah ….
CH2O
CH3O
C2H6O
C2H6O2
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu oksida nitrogen mengandung oksigen sebanyak 36,37% massa, maka rumus molekul senyawa tersebut adalah ….
NO
N2O3
NO3
N2O
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Dalam suatu percobaan di laboratorium, 10 liter (T,P) nitrogen monoksida direaksikan dengan 5 liter (T,P) gas oksigen menghasilkan 5 liter (T,P) suatu oksida nitrogen. Rumus oksida nitrogen tersebut adalah ….
N2O5
N2O4
N2O3
NO2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Senyawa X terdiri dari 87,42% massa N dan sisanya massa H. Jika massa molekul relatif senyawa X sebesar 32, rumus empiris dan rumus molekul senyawa X? (Ar N = 14; H = 1)
NH2 dan N2H4
NH3 dan NH2
NH dan NH2
NH3 dan N2H4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu senyawa organik tersusun dari 40% karbon; 6,6% hidrogen dan sisanya oksigen. Rumus empiris senyawa tersebut adalah ….
CHO
CH2O
C2H4O2
C2HO
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