
Rumus Empiris dan Rumus Molekul
Quiz
•
Chemistry
•
10th Grade
•
Hard

Noerhayati Catur
Used 5+ times
FREE Resource
21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Pirimidin tersusun dari 60% karbon, 5% hidrogen, dan sisanya nitrogen (Ar H=1, C=12, N=14). Jika massa molekul relatif pirimidin adalah 80 maka rumus molekulnya adalah ....
C2H2N
C4H4N2
C5H6N
C6H6N3
C3H2N4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
suatu senyawa tersusun dari 1,2 gram kalsium; 0,62 gram fosfor; dan 1,28 gram oksigen (Ar O =16; P=31; Ca=40) rumus empiris senyawa tersebut adalah ....
Ca3PO3
Ca2P2O8
Ca2P2O5
Ca3P2O8
Ca4P2O8
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suatu senyawa dengan Mr=80 mengandung 40% massa unsur X (Ar=32) dan sisanya unsur Y (Ar= 16) . rumus molekul senyawa tersebut adalah
XY
XY2
XY3
X2Y
X2Y3
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Senyawa karbon mengandung 40% karbon, 53,33% oksigen dan sisanya hidrogen.jika mr senyawa tersebut 180 maka rumus molekul senyawa tersebut adalah
C6H12O6
C3H4O2
C3H5O2
C3H6O2
C6H8O6
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Di dalam 15,2 gram senyawa oksida kromium terdapat 10,4 gram kromium. jika Ar Cr =52 dan O=16, maka rumus empiris oksida kromium adalah ...
CrO
CrO2
Cr2O
Cr2O3
Cr3O4
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Suatu senyawa memiliki rumus empiris CH2. Jika massa molekul relatif senyawa tersebut 70, rumus molekulnya adalah ....
C2H4
C3H6
C4H8
C5H10
C6H12
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Di antara kelompok senyawa berikut yang merupakan rumus empiris adalah
P2O5 dan CH2O
P4O10 dan C4H8
(COOH)2 dan C5H6
C6H12O6 dan C2H6O
C3H8 dan C6H14
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