Quiz Rumus Molekul dan Rumus Empiris

Quiz
•
Chemistry
•
11th Grade
•
Medium
Kyra Zeta
Used 16+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 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
5 mins • 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
5 mins • 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
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu senyawa memiliki rumus empiris CH2. Jika massa molekul relatif senyawa tersebut 70, rumus molekulnya adalah ....
C2H4
C3H6
C4H8
C5H10
C6H12
5.
MULTIPLE CHOICE QUESTION
5 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
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu senyawa mempunyai rumus empiris (CHO2)n dengan massa rumus relatif 90 (Ar C = 12 ; H = 1 ; O = 16), maka molekul senyawa tersebut adalah
CHO2
C2H2O2
C2H2O4
C3H3O3
C6H12O6
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu senyawa organik (Mr = 80) mengandung 60% karbon, 5% Hidrogen dan sisanya Nitrogen. Rumus molekul senyawa tersebut adalah …. (Ar : C = 12 ; H = 1 ; N = 14)
C2H2N2
C2H4N2
C4H2N2
C3H2N4
C4H4N2
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