fooks

[匿名]

回覆: 3

2016-03-17 10:57 am

Expand cos4A?

[匿名]

回覆: 1

2016-03-17 10:57 am

3 + √x + 19 - √2x when x = 6?

[匿名]

回覆: 1

2016-03-17 10:31 am

Please help me with this question?

[匿名]

回覆: 3

2016-03-17 8:00 am

I m having a tough time balancing redox equations!?

[匿名]

回覆: 7

2016-03-17 9:15 am

what is loga a^x= x?

[匿名]

回覆: 6

2016-03-17 8:47 am

How to find derivate of this function y=3^(x^2-x+1) ?

[匿名]

回覆: 2

2016-03-17 8:54 am

A lift of mass 200kg moves upward with a uniform velocity of 4 m/s . if efficiency of motor is 70 then input power of motor is?

[匿名]

回覆: 1

2016-03-17 12:48 am

BALANCE CHEMICAL REACTION - HELP please!.... Pure alcohol, or ethanol...?

[匿名]

回覆: 1

2016-03-17 12:40 am

A 0.150 M solution of a weak base has a pH of 9.55. What is the base hydrolysis constant, Kb, for the weak base? Please Chemistry Question?

[匿名]

回覆: 1

2016-03-17 12:34 am

write a balanced equation for the reaction of ethylene glycol and oxygen to give oxalic acid and water?

[匿名]

回覆: 1

2016-03-08 1:17 pm

Chemistry help!?!?!?

[匿名]

回覆: 2

2016-03-05 3:03 am

為何氧化反應會失去電子 還原反應會得到電子?

[匿名]

回覆: 3

2016-02-16 12:19 am

１６８公分是幾英呎英吋?

[匿名]

回覆: 1

2016-02-14 7:42 am

急需解答! 國一上 數學?

[匿名]

回覆: 2

2016-02-15 9:47 am

請問這條數學題正確列式應該是如何？

[匿名]

回覆: 1

2016-02-12 3:40 pm

一條餘式定理綜合題?

[匿名]

回覆: 1

2016-02-11 12:39 pm

inequalities?

Kamk

回覆: 2

2016-02-02 1:31 pm

國中電學的電池問題?

[匿名]

回覆: 1

2016-01-30 10:51 am

我有一些不會的數學題目?

[匿名]

回覆: 1

2016-01-23 9:01 am

Find the integral of xcos5x with respect to x.?

[匿名]

回覆: 2

2016-01-11 5:09 am

A gas is 65.8 L at 129 kPa. What volume would the gas be at 76.2 kPa?

[匿名]

回覆: 1

2016-01-11 9:38 am

12. According to Brönsted-Lowry theory,which of the following substance is an acid only? (a) HS- (b) CH3COO- (c) NH4+ (d) HCO3-?

[匿名]

回覆: 1

2016-01-11 8:30 am

Stoichiometry Find Molarity/moles of reactants or products?

[匿名]

回覆: 1

2016-01-11 8:58 am

chemistry question?

[匿名]

回覆: 1

2016-01-08 5:48 pm

為了殺菌，我們希望調製濃度70％的酒精溶液，今有濃度90％的酒精溶液700公克，需加入多少公克的純水才能達到目的？

[匿名]

回覆: 2

2015-12-27 3:32 am

假設1公斤的鹽含有4359毫克的鈉，請問1.2克的鹽會含多少鈉應該如何計算。?

[匿名]

回覆: 2

2015-12-27 4:20 am

胃酸的 pH 值是2 ，與純水比較,它所含的氫離子數量是水的多少倍？ 我算很久一直算不出來， 請大家幫我解答 ， 謝謝！?

[匿名]

回覆: 1

2015-12-21 6:59 pm

鐵受熱升溫至1394℃時會由BCC結構變為FCC結構，此時其體積會膨脹?

[匿名]

回覆: 1

2015-12-16 10:37 am

請問有機化學中，一個分子為共軛結構代表什麼意思呢？謝謝！?

haha

回覆: 1

2015-12-01 1:41 pm

mathematical induction?

[匿名]

回覆: 1

2015-11-08 5:02 am

氫氧化鈉溶液加熱後，有什麼顏色殘留物?

[匿名]

回覆: 1

2015-11-02 2:21 pm

BF3和NH3裡面B←N的配位共價鍵是用哪種混成軌域鍵結的呢?

[匿名]

回覆: 1

2015-11-03 10:24 am

一九五九年十一月初五,新历幾月幾号?

[匿名]

回覆: 1

2015-10-26 4:29 pm

Math question?

[匿名]

回覆: 1

2015-10-09 5:39 pm

國三數學(相似和全等三角形)?

[匿名]

回覆: 1

2015-10-05 4:03 pm

砲彈自岸邊海平面上方高度80公尺,已初速50公尺/秒,仰角37度射出,恰好擊中正向岸邊以速率5公尺/秒行駛過來之敵艦,不計空氣阻力,g=10公尺/秒平方 Q1:砲彈飛行時間為幾秒? Q2:砲彈的水平射程為幾公尺? Q3:發砲時艦離岸邊距離為幾公尺? 求詳解拜託了!!?

[匿名]

回覆: 2

2015-09-23 9:41 pm

how to calculate?help me!!!please!!quick!!!?

[匿名]

回覆: 1

2015-09-21 4:45 am

In what atom/ion does a 3p electron experience the greatest effective nuclear charge?

[匿名]

回覆: 1

2015-09-14 4:59 pm

多項式A除以（X-2)(X-3)分別餘8、11，A除以（X-2)(X-3)商式（X-4),A除以（X-4)餘數?

[匿名]

回覆: 3

2015-09-10 6:05 pm

Evaluate the difference quotient for the given function. Simplify your answer. f(x) = −x3, f(a + h) − f(a)/h?

[匿名]

回覆: 3

2015-09-10 5:42 pm

Calculate the number of moles?

[匿名]

回覆: 2

2015-09-07 2:55 pm

13右圖為△ABC雨圓的重疊情形 https://www.flickr.com/photos/101292575@N06/21008009640/in/dateposted-public/?

[匿名]

回覆: 1

2015-09-07 2:58 pm

14兩圓相交於A B 兩點 https://www.flickr.com/photos/101292575@N06/21008009640/in/dateposted-public/?

[匿名]

回覆: 2

2015-08-31 8:22 pm

MATH MAP QUESTION?

[匿名]

回覆: 1

2015-08-31 8:23 pm

A solid cone has a lateral surface area of 100π square cm and a total surface area of 269π square cm. Find the base radius of the cone.?

[匿名]

回覆: 1

2015-08-31 8:20 pm

electrochemistry?

[匿名]

回覆: 5

2015-08-31 5:49 pm

What is the volume in cm3 of a wood block with a length, width, and height of 3.13cm, 2.12cm, 4.2cm, respectively?

[匿名]

回覆: 5

2015-08-31 5:49 pm

the bill for dinner was $35.90. you left $8.62 for the tip. what percentage of original bill was the tip?

[匿名]

回覆: 1

2015-08-31 5:28 pm

Help with algebra?

[匿名]

回覆: 4

2015-08-31 5:22 pm

A boy on the edge of a vertical cliff 20.0 m high throws a stone horizontally outwards with a speed of 8.00 m/s.?