1. 莫耳的氫氣(H₂)與1莫耳的臭氧(O₃),何者所含的原子數較多?

國二下理化Chap1-2 化學反應的微觀世界 2025 0123

Quiz
•
Chemistry
•
8th Grade
•
Hard
Sone Wang
FREE Resource
20 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
H₂
O₃
一樣多
不同氣體之間無法比較
2.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
已知氫氧化鈣(Ca(OH)₂)的分子量為74,且原子量H=1、O=16,則鈣(Ca)元素的原子量為多少?
17
40
57
74
3.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
原子量並非原子的實際質量,而是各原子間質量的比較數值,既然是比較的結果,就必須有標準。
試問現在使用比較原子量的標準是什麼?
碳−12的原子量為12
氫−1的原子量為1
氧−16的原子量為16
氮−14的原子量為14
4.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
取相同數目的甲原子與碳原子做質量的比較,結果質量比為4:3;試問甲的原子量應該為何?
9
12
16
24
5.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
若甲對碳原子(C-12)的質量比為2:1,則甲的原子量為何?
6
12
24
48
6.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列有關莫耳的敘述何者錯誤?
莫耳是計算數量的單位
計算分子個數可以莫耳為單位
1莫耳等於6×10^23個粒子
計算水果蜜桃個數以莫耳作單位比較適當。
7.
MULTIPLE CHOICE QUESTION
1 min • 5 pts
下列各分子的分子量中,何者錯誤? (N=14,Ca=40,K=39,Na=23) (A)NH₃=17 (B)NaHCO₃=101 (C)NaOH=40 (D)KNO₃=101。
NH₃=17
NaHCO₃=101
NaOH=40
KNO₃=101
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