莫耳與質量2
Quiz
•
Science
•
7th - 9th Grade
•
Hard
鄭之偉 鄭之偉
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
鋁的原子量是27,則下列敘述何者正確?
一個鋁原子的質量為27公克
一公克鋁中含有27個原子
鋁原子質量是碳原子質量的27/12倍
鋁原子質量是碳原子質量的12/27倍
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
同分子數的一氧化碳(CO)與二氧化碳( CO2 )在下列各項目中,何者比例為1:2?(原子量:C=12,O=16)
質量比
氧原子數比
碳原子數比
總原子數比
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
下列各物質中,何者所含的氧原子數為一莫耳?(原子量:H=1,C=12,O=16)
180克的C6H12O6
44克的CO2
36克的H2O
16克的O2
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某金屬氧化物之化學式可用V2On表示,n為一正整數。若已知每莫耳V2On之質量為182,則n為下列何者?(原子量:V=51,O=16)
8
5
4
3
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
1莫耳的氧氣(O2)與1莫耳的臭氧(O3)相比較,哪一個較重?
O2
O3
一樣多
不同氣體之間無法比較
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
CO2是二氧化碳的分子式,下列有關此式所表示的意義何者正確?
二氧化碳分子的組成可能是CO2、C2O4 、 C3O6
二氧化碳分子是由氧原子和碳原子以1:2的比例組成
1莫耳二氧化碳的體積等於1莫耳碳原子和2莫耳氧原子的體積總和
1莫耳二氧化碳的質量等於1莫耳碳原子和2莫耳氧原子的質量總和
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
某金屬M的原子量為27,O的原子量為16,已知其金屬氧化物中金屬M和氧的質量比為9:8,則下列何者為此金屬氧化物的化學式?
MO
MO2
M2O3
M3O2
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