八下1-2隨堂測驗

Quiz
•
Chemistry
•
8th Grade
•
Hard
鄭 閔澤
Used 8+ times
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知碳的原子量為12,則下列敘述何者正確?
1個碳原子的質量為12公克
12個碳原子的質量為1公克
1莫耳碳原子的質量為12公克
12公克的碳中含有2莫耳碳原子
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
一莫耳大約有多少個粒子數?
3×1022
6×1022
3×1023
6×1023
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知碳的原子量為12,則12公克的碳含有X個碳原子,而2莫耳碳原子的質量是Y公克,請問X與Y應為下列何者?
X= 6×1023,Y=24
X= 6×1024,Y=12
X= 24,Y= 6×1022
X= 12,Y= 6×1023
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知二氧化碳的化學式是CO2,一氧化碳的化學式是CO,試計算1個二氧化碳分子與1個一氧化碳分子的質量比?(原子量:C=12,O=16)
3 : 8
7 : 9
9 : 11
11 : 7
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
已知水的化學式是H2O,則36公克的水中含氫與氧各多少公克?(原子量:H=1,O=16)
氫2公克,氧34公克
氫4公克,氧32公克
氫6公克,氧30公克
氫8公克,氧28公克
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
在0.5莫耳的葡萄糖(C6H12O6)中,含有多少個氫原子?
3×1023個
6×1023個
3.6×1024個
7.2×1024個
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
某物質氧化物的分子式為AO2,若此化合物9×1023個分子的質量是69公克,則A可能為下列何種原子?(原子量:C=12,N=14,S=32,P=31)
C
N
S
P
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