
กลางภาคเคมี2 ม.4
Authored by Tharinee Santalad
Chemistry
10th Grade
Used 33+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Na2 CO3 มีมวลโมเลกุลเท่าใด (มวลอะตอม Na = 23, C = 12, O = 16)
46
51
106
181
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
สารในข้อใดต่อไปนี้เป็นอะตอม
CO
NaO
Cl
K2O
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
สารในข้อใดต่อไปนี้เป็นโมเลกุล
NaO
Co
Ca
Ne
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
CO2 1 โมเลกุล มีมวลกี่กรัม (มวลอะตอม C= 12, O = 16)
28
44
28 × 1.66 × 10-24
44 × 1.66 × 10-24
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
จงหามวลโมเลกุลของ Pb (NO3)2 (มวลอะตอม Pb = 207, O = 16, N = 14)
207
221
331
342
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
มวลโมเลกุลของ H2O มีค่าเท่าใด (มวลอะตอมH=1, O=16)
18
32
18×1.66×10-24 กรัม
32×1.66×10 -24 กรัม
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
จงหามวลโมเลกุลของ CoSO4 . 7H2O (มวลอะตอม O= 16, S = 32, H = 1, Co = 59)
155
173
281
365
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