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# 魔龍帝齊格益力多

• ### log problem solving

log(1/3)(log3(x))=1

Solve x

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1/3同3都係log下面

4 個解答數學8 年前
• ### Chemistry Homologous series

我想問:

Why does the solubility in water of carbon molecules(in all homologous series )decrease with increasing carbon atoms ?

1 個解答化學8 年前
• ### Microscopic world ii

我見過一條A-LEVEL QUESTION,as follow

Explain HI has higher boiling point than HBr

答案話:HI has greater number of eletrons,so the boiling point of HI is higher.

不過我本書冇講過,所以我用molecular size 解釋,is it ok?

2 個解答化學8 年前
• ### Maths question!

A teacher wants to divide a class of 18 students into 3 groups, each of 6 students, to do 3 different statistical projects.In how many ways can the students be grouped?

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點解唔使除3!?

3 個解答數學8 年前
• ### Maths question!

y is inversely proportional to x

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如果我地DRAW一幅y against(1/x)的graph,是會穿過(0,0)的.

但係如果substitute(0,0) into y=k/x 的時侯,就會變左0=1/0

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問題:

其實它是否穿過(0,0)?

1 個解答數學8 年前
• ### PHYSIC Questions!

Q1:

我想問呢幅FREE-BODY DIAGRAM（ｎｏ　ｆｒｉｃｔｉｏｎ）岩唔岩?

如果岩,它唔係應該掉下去?點解可以仲做CIRCULAR　ＭＯＴＩＯＮ?

PS:當R指向圓心

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Q2:

以上2個BALL都係IDENTICAL,我想問邊條STRING 的TENSION大D?

1 個解答其他 - 科學8 年前
• ### Inter-Conversion of carbon!

CH3CH2(CHCl)CH3----------->CH3-(C=O)-(C=O)-CH3

How can it convert?

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CH3CH2CH2OH------->CH3-(C=O)-CH3

CH3CH2CH2OH唔係primary alcohols?唔係應該做aldehyde?

1 個解答化學8 年前
• ### Combination problems X2!

In a parent-teacher association,there are 5 couples.A project team of 4 people is going to selected from the 5 couples.Find the numbers of way to form the team if:

a:the team consists of no couples

b:the team consists of exactly 1 couple

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有30個人,大家要互相握手.有幾多方法?

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Please explain clear in details in Chinese!

2 個解答數學8 年前
• ### Combination Problem!

Nancy has bought 10 different present.In how many way can she divide the presents into 5 groups of 2?

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A 5-card poker hand is selceted from a deck of 52 playing cards.How many different poker hands contain exactly one pair?

1 個解答數學8 年前
• ### F4 Phsyic Past Paper !(2)

2 個解答其他 - 科學8 年前
• ### F4 physic!(lens and force)

What is sharp image?

What is resultant force?

Explain them in Chinese or English.

Not Homework!

1 個解答其他 - 科學8 年前
• ### F4 Chem questioin

Which of the following methoods suitable for preparing a sample of lead sulphate?

呢D題目應該點做?

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Which of the following combination（ｓ） would show a rise in temperature and give a clear solution?

Ａ：Concentrated sulphuric acid + water

Ｂ：Dilute sulphuric acid +limewater

Ｃ：dilute NaOH + dilute sulphuric acid

唔係個個都會溫度上升?什麼是CLEAR　ＳＯＬＵＴＩＯＮ？

1 個解答化學9 年前
• ### F4 Maths question!

When a polynomial f(x) is divided by x-5,the remaider is 9.When it is divided by x+2,the remainder is -5.Find the remainder when f(x) divided by (x+2)(x-5)

1 個解答數學9 年前
• ### F4 physic!(Wave motion)

As follow:

2 個解答其他 - 科學9 年前
• ### F4 PHY.!

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2 個解答其他 - 科學9 年前
• ### F3 maths question!

求AB的slope,我唔知係2/50定係50/2..

4 個解答數學10 年前
• ### F3 Maths question!

左三角形ABC中,已知sin(A/2)=(sqrt5)/3

求sin((B+C)/2)的值

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Please construct a triangle if it is possible!

3 個解答數學10 年前
• ### F3 chem.!(Not homework)

How to draw the ionic bond formed by Calcium(2,8,8,2) and Chlorine(2,8,7)?

What is the chemical formula?

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How to draw the ionic bond formed by Lithium (2,1)and sulphur(2,8,5)?

What is the chemical formula?

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4 個解答化學10 年前

判斷以下句子是否判斷句.

燕雀安知鴻之志哉?

夫戰，勇氣也。

予謂花，花之隱逸者

1 個解答語言10 年前
• ### 文言文translation!!!!!(6)

子路問：「聞斯行諸？」子曰：「有父兄在，如之何其聞斯行之！」冉有問：「聞斯行諸？」子曰：「聞斯行之。」公西華曰：「由也問：『聞斯行諸？』子曰：『有父兄在。』求也問：『聞斯行諸？』子曰：『聞斯行之。』赤也惑，敢問。子曰：「求也退，故進之；由也兼人，故退之。」

What is 聞斯?

最好有全段翻譯!

1 個解答語言10 年前