
LATIHAN SOAL KADAR, RUMUS EMPIRIS, DAN RUMUS MOLEKUL

Quiz
•
Chemistry
•
10th Grade
•
Hard
Nugroho Putra
Used 167+ times
FREE Resource
10 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 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
3.
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
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Dalam 50 mL air terdapat 50 gram gula pasir, berapakah kadar gula pasir dalam air tersebut? massa jenis air =1 gram/ml
25 %
50 %
75 %
100 %
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Seorang peneliti menemukan suatu senyawa yang mengandung 6 gram unsur H, 320 gram unsur S dan 64 gram unsur O. Jika Ar H = 1, S = 32, O = 16, maka rumus molekul senyawa tersebut adalah ....
C3H5O
C6H10O2
CH32O16
C6H10O4
C2H5O
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Suatu bahan makanan terdiri dari 3 unsur yaitu unsur C, H, dan O. Bahan makanan ini memiliki komposisi 72 gram C, 10 gram H, dan 128 gram O. Maka rumus empiris bahan makanan tersebut adalah .... (Ar C = 12, H = 1, O = 16)
C6H10O8
C3H5O4
C8HO14
C4H6O12
C2H3O6
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Suatu larutan yang mengandung 45% glukosa mempunyai berat jenis 1,46 gram/cm3, dalam 50 ml larutan tersebut mengandung glukosa sebanyak ….
56,0 gram
32,85 gram
22,50 gram
15,41 gram
12,15 gram
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