andrew

[匿名]

回覆: 1

2016-02-21 7:34 am

阿將七個邊長5公分的正方體積木組成一個立體十字造型的多面體求體積和表面積?

[匿名]

回覆: 2

2016-02-21 7:40 am

阿將七個邊長5公分的正方體積木組成一個立體十字造型的多面體求體積和表面積?

[匿名]

回覆: 2

2016-02-21 7:49 am

急！！已知華氏溫度度數等於5分之9＊攝氏溫度度數+32度，則在什麼溫度下攝氏溫度等於華氏溫度?

[匿名]

回覆: 3

2016-02-21 4:54 am

how to solve x+7 sq -4 =0 algebraically?

[匿名]

回覆: 1

2016-02-21 4:41 am

does double or triple bonds affect the polarity of molecules even though the structure is symmetrical?,like the case of co32-?

[匿名]

回覆: 2

2016-02-21 4:13 am

Why does CHBr3 and C10H22 have higher boiling points than water?

[匿名]

回覆: 3

2016-02-21 4:21 am

find the distance between (-5,4) and (5,4)?

[匿名]

回覆: 2

2016-02-21 1:19 am

若logx/2*log3/x=logx/6有兩個相異實根,則此兩根之積為?

[匿名]

回覆: 1

2016-02-20 7:40 pm

Im doing a Acid-Base titration lab and i have .3374g of acid and 18.50ml of NaOH, and it is asking for the Volume of NaOH/g acid.?

[匿名]

回覆: 6

2016-02-20 7:53 pm

Probability question?

[匿名]

回覆: 3

2016-02-20 3:22 pm

平衡化學反應式: ─NaHCO3+─H2SO4→─Na2SO4+─CO2+─H2O 這題怎麼平衡?

[匿名]

回覆: 1

2016-02-20 3:32 pm

下列濃度均為0.1M 體績均為500ml的水溶液,請問哪一杯水溶液中所含的粒子總數目最多? (A)葡萄糖(C6H12O6) (B)硫酸(H2SO4) (C)氫氧化鈉(NaOH) (D)醋酸(CH3COOH)?

[匿名]

回覆: 2

2016-02-20 5:55 pm

解二元一次聯立方程式?

[匿名]

回覆: 1

2016-02-20 3:19 pm

aldol condensation?

[匿名]

回覆: 2

2016-02-20 3:33 pm

Find the equation of the tangent to x² + y²=100 which passes through the point (6,8)?

[匿名]

回覆: 1

2016-02-20 11:39 am

解涉及方位的二維空間應用題?

[匿名]

回覆: 1

2016-02-20 2:37 pm

in extraction of lead oxide using carbon what is the reducing agent? lead oxide+ carbon ------> lead +carbon monoxide?

[匿名]

回覆: 1

2016-02-20 1:41 pm

A ball of 9.3 grams is suspended from a string. What is the size of the tension force in the string?

[匿名]

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2016-02-20 1:33 pm

[[Correct Answer---->10 points?]]?

[匿名]

回覆: 3

2016-02-20 1:38 pm

Using the distributive property of multiplication over addition to factor. ab+ac=a(b+c) 47 X 99 + 47?

[匿名]

回覆: 4

2016-02-20 12:43 pm

Solve the quadratic equation x^2-10+34=0?

[匿名]

回覆: 4

2016-02-20 1:24 pm

x/2 + y/3 = 2 , x + 2y = 8 Whats the Value of X and Y ?

[匿名]

回覆: 3

2016-02-20 1:03 pm

C10H22 -> C5H10 + C3H8 + ?

[匿名]

回覆: 2

2016-02-20 8:49 am

If the angle of elevation of the sun is 11º20’, how long is the shadow on the level ground of a man who is 5.5 ft tall?

[匿名]

回覆: 5

2016-02-20 8:56 am

What is the length of the side of a square whose diagonal is equal to 18cm?

[匿名]

回覆: 1

2016-02-20 8:37 am

The mass of oxalic acid dihydrate is 1.4918g. Funneled into a 250ml flask and filled with water. What is the Concentration of oxalic acid.?

[匿名]

回覆: 1

2016-02-20 7:13 am

How many kilojoules of heat were absorbed?

[匿名]

回覆: 1

2016-02-20 7:16 am

Calculate the heat change in calories for freezing 55 g of water at 0 ∘C.?

[匿名]

回覆: 1

2016-02-20 7:18 am

Calculate the heat change in joules for freezing 235 g of water at 0 ∘C.?

[匿名]

回覆: 3

2016-02-20 6:03 am

A small rock is thrown vertically upward with a speed of 29.0 m/s from the edge of the roof of a 27.0-m-tall building.?

[匿名]

回覆: 1

2016-02-20 6:06 am

The Hydrogen Atom -- Bohr Model?

[匿名]

回覆: 1

2016-02-20 5:39 am

A 7450 kg rocket blasts off vertically from the launch pad with a constant upward?

[匿名]

回覆: 1

2016-02-20 5:18 am

Chemistry Question?

[匿名]

回覆: 4

2016-02-20 5:12 am

Which equation(s) shows a proportional relationship between x and y?

[匿名]

回覆: 1

2016-02-19 10:50 pm

Can someone help me with a chem question?

[匿名]

回覆: 1

2016-02-19 11:06 pm

Please Help chemistry question?

[匿名]

回覆: 1

2016-02-19 11:11 pm

How do I find the concentration of the HCOOH solution?

[匿名]

回覆: 1

2016-02-19 10:26 pm

math question help (10 points)?

[匿名]

回覆: 1

2016-02-19 10:36 pm

PHYSICS HELP?

[匿名]

回覆: 1

2016-02-19 10:13 pm

Chemistry help?

[匿名]

回覆: 1

2016-02-19 10:00 pm

Write the net ionic equation for the precipitation of copper(II) sulfide from aqueous solution:?

[匿名]

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2016-02-19 10:15 pm

balance _AgNO3+_BaCl2-->_AgCl+Ba(NO3)2.?

[匿名]

回覆: 3

2016-02-19 10:14 pm

35/[3^2+(9-7)-2^2]+30-3?

[匿名]

回覆: 2

2016-02-19 10:07 pm

what is the molar mass of a gas if 1.00g of the gas has a volume of 255mL at STP?

[匿名]

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2016-02-19 10:01 pm

Consider the reaction when aqueous solutions of lead(II) acetate and zinc chloride are combined. The net ionic equation for this reaction is?

[匿名]

回覆: 8

2016-02-19 10:00 pm

What is 0 divided by 0?

[匿名]

回覆: 2

2016-02-19 9:47 pm

Find the equation of the tangent line to the graph of the function at the given value of x. f(x) =x^2+5x at x=4 please I need step by step?

[匿名]

回覆: 9

2016-02-19 9:45 pm

What is 58 : 42 in fraction.?

[匿名]

回覆: 2

2016-02-19 9:21 pm

pKa question?

[匿名]

回覆: 2

2016-02-19 8:58 pm

SF6 Question. Just curious?