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Latih Tubi JAR, JMR, JFR

Authored by Zulhilmi Zailani

Chemistry

10th Grade

Used 3+ times

Latih Tubi JAR, JMR, JFR
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8 questions

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1.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Magnesium secara semula jadi wujud dalam tiga isotop, iaitu 79% 24Mg, 10% 25Mg dan 11% 26Mg. Hitungkan jisim atom relatif magnesium.

25.01

24.32

0.2501

0.2432

2.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Diberi maklumat isotop bagi zink adalah seperti berikut:

Zn-65: 60%

Zn-66: 40%

Berapakah jisim atom relatif bagi zink, Zn?

65.6

0.656

65.4

0.654

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Kirakan JFR bagi NaHCO3.

[JAR: Na = 23, H = 1, C = 12, O =16]

98

76

52

84

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Diberi jisim formula relatif bagi plumbum ferum (III) bromida, FeBr3 ialah 296.

Hitung JAR bagi unsur bromin, Br.

[JAR: Fe = 56]

80

35.5

19

240

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Diberi jisim formula relatif bagi kalium nitrat, KNO3 ialah 101.

Cari JAR bagi unsur yang bergaris.

[JAR: K = 39, O = 16]

12

14

6

7

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Asid fosforik, H3PO4 mempunyai jisim molekul relatif sebanyak 98.

Berapakah JAR bagi unsur oksigen?

[JAR: H = 1, P = 31]

16

32

48

60

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Satu sebatian dengan formula X2SO4 mempunyai JFR 142.

Antara yang berikut yang manakah JAR bagi unsur X?

[JAR: S = 32, O = 16]

52

39

78

23

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