
Mr dan Rumus Mol
Quiz
•
Chemistry
•
1st Grade
•
Practice Problem
•
Medium
Avi Irma Budyastuti
Used 3+ times
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25 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Sebanyak 8 gram unsur X tepat bereaksi dengan 12 gram oksigen membentuk XO3. Jika Ar O =16, maka Ar X adalah ....
8
16
18
24
32
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Jika Ar Ca=40, O=16, C=12, Mr senyawa CaCO3 adalah ....
60
75
100
115
130
3.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Senyawa kalium perklorat memiliki Mr = ....
(Ar K=39; Ca=40; Cl=35,5; O=16; C=12)
81,5
98,5
110,5
125,5
138,5
4.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Senyawa garam inggris, MgSO4.XH2O mempunyai Mr = ....
(Ar Mg=24; S=32; O=16; dan H=1)
128x
138x
120 + 18x
120 + 36x
120x + 18
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Di antara senyawa di bawah ini yang mempunyai massa molekul relatif (Mr) terbesar adalah ....
(Ar C=12; N=14; H=1; O=16; S=32)
CO(NH2)2
CH3COOH
SO3
(NH4)2SO4
C2H5COOC3H7
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Suatu senyawa mempunyai rumus molekul L2(SO4)3. Jika Ar S=32; O=16 dan Mr L2(SO4)3 = 400, maka Ar L adalah ....
23
56
76
100
112
7.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Massa molekul relatif (Mr) dari senyawa (XH3XOO)2Ca adalah 158. Jika Ar Ca=40; O=16; H=1; maka Ar X adalah ....
6
12
18
24
30
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