22-23 S5 下學期 考試跟進 pre-test

22-23 S5 下學期 考試跟進 pre-test

9th - 12th Grade

25 Qs

quiz-placeholder

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22-23 S5 下學期 考試跟進 pre-test

22-23 S5 下學期 考試跟進 pre-test

Assessment

Quiz

Chemistry

9th - 12th Grade

Practice Problem

Medium

Created by

Hoi Lam

Used 1+ times

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25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

32.0 g的甲烷分子的摩爾數是多少?

(相對原子質量:H = 1.0,C = 12.0)

0.5 mol

1 mol

1.5 mol

2 mol

2.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

在Na2SO4 中,Na 的質量百分比是多少?

(相對原子質量:O = 16.0,Na = 23.0,S = 32.1)

16.2%

22.6%

32.4%

46.0%

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

0.769 mol

2.5 mol

32.5 mol

65 mol

4.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

0.3 mol

0.511 mol

1.0 mol

1.2 mol

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

在200.0 cm3 的2.00 mol dm–3 Na2CO3 溶液中,Na2CO3 的摩爾數是多少?

0.40 mol

400 mol

10 mol

0.01 mol

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

把鋅加入檸檬汁時,有甚麼氣體釋出?

二氧化碳

沒有氣體釋出

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

把碳酸氫鈉加進稀硫酸時,有甚麼氣體釋出?

二氧化碳

沒有氣體釋出

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