
Kadar Zat
Authored by halima arahman
Chemistry
10th Grade
Used 20+ times

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10 questions
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1.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Persen besi yang terdapat di dalam Fe2O3, jika diketahui Ar Fe =56, Ar O = 16 adalah....
50%
60%
70%
80%
90%
2.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Suatu senyawa dengan Mr= 30 mengandung 80% unsur karbon dan 20% unsur hidrogen, maka rumus molekul senyawa tersebut adalah.... Ar C = 12, Ar H = 1
CH3
C2H6
C3H8
C2H4
C3H6
3.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Massa oksigen di dalam senyawa oksida XO2 adalah 40%. Jika Ar O =16, maka Ar X adalah....
120
60
48
32
24
4.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Massa unsur besi yang terdapat di dalam 20 gram Fe2(SO4)3 adalah....(Ar Fe = 56, Ar S = 32, Ar O = 16)
5,6 gram
11,2 gram
2,24 gram
112 gram
22,4 gram
5.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Jika diketahui hemoglobin (Mr = 68.000) mengandung 0,33% massa besi, maka jumlah atom Fe (Ar Fe = 56) dalam molekul hemoglobin adalah....
3
4
5
6
7
6.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Volume alkohol dalam (mL) yang terlarut dalam 500 mL larutan alkohol yang memiliki kadar 30% adalah....
100 mL
150 mL
200 mL
250 mL
300 mL
7.
MULTIPLE SELECT QUESTION
2 mins • 1 pt
Kadar gas metana di udara maksimum hanya diperbolehkan sebesar 0,0002% volume. maka kadar gas metana yang dinyatakan dalam bpj (ppm) adalah....
2 bpj
4 bpj
20 bpj
40 bpj
200 bpj
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