fooks

[匿名]

回覆: 1

2016-06-09 5:39 pm

What is the balance equation of Ca (No3)-->CaO+No3+O2?

[匿名]

回覆: 1

2016-06-09 5:41 pm

Balance equation of Ca (No3)2-->CaO+No2+O2?

[匿名]

回覆: 1

2016-06-09 5:44 pm

PLS PLS PLS PLS PLS PLS PLS HELP - URGENT CHEM LAB ;/ - Moles and balancing equations?

[匿名]

回覆: 1

2016-06-09 4:56 pm

If compound VxOy is 67.98 percentage by mass V, what is its empirical formula? I got V51O24?

[匿名]

回覆: 4

2016-06-07 3:40 pm

integral of 2x/2+x-x^2dx?

[匿名]

回覆: 4

2016-06-07 4:12 pm

Let f(x)= x^2+5 and g(x)= x+5/x find (g of f) (-3)?

[匿名]

回覆: 1

2016-06-07 1:40 pm

<<急！！>>有兩個底面積相同的容器，一個是正方形，另一個是梯形，水面高度一樣，底部受到的液體壓力相同，可是正方形的水比較多啊！不是要算液柱重量嗎？老師說壓力會一樣是因為器壁的反作用力的關係，但這樣就不是液壓而是合力了吧？

[匿名]

回覆: 2

2016-06-07 2:39 pm

z=-2m+3mi-9i+4, m is a real number and i^2 = 1, find the value of m 1. z is a real number. 2. z is a purely imaginary number?

[匿名]

回覆: 2

2016-06-07 9:24 am

HF can form KHF2 but HCl cant why?

[匿名]

回覆: 3

2016-06-07 2:06 pm

what is the name of the compisition NaH2PO4?

[匿名]

回覆: 3

2016-06-07 1:23 pm

what is the name of the composition NaH2PO4(s)?

[匿名]

回覆: 3

2016-06-07 1:26 pm

Please help ASAP?

[匿名]

回覆: 1

2016-06-07 12:58 pm

Area and rate of pool under a leaking water pipe?

[匿名]

回覆: 1

2016-06-07 2:12 am

Chemistry Redox Question Help?

[匿名]

回覆: 1

2016-06-07 2:53 am

A sample of an ideal gas has a volume of 3.70 L at 12.80 °C and 1.80 atm. What is the volume of the gas at 23.00 °C and 0.996 atm? In L?

[匿名]

回覆: 1

2016-06-07 5:24 am

ELECTROCHEMISTRY HELP REQUIRED. Lost and confused.?

[匿名]

回覆: 2

2016-06-06 7:03 pm

mole fraction of nitrogen gas in compressed air is 0.78. If you have 1,000 molecules of compressed air, how many will be nitrogen molecules?

[匿名]

回覆: 1

2016-05-31 4:13 pm

Geometry Help?

[匿名]

回覆: 3

2016-05-31 5:08 pm

What is the equation of a line that passes through (2,-1) and (5,4). Write the equation in general form. Thanks!!!?

[匿名]

回覆: 1

2016-05-31 5:01 pm

evaluate sin(tan^-1 15/8)?

[匿名]

回覆: 4

2016-05-31 5:01 pm

2z^3-6z^2/z^2-3z?

[匿名]

回覆: 1

2016-05-31 3:08 pm

CHEM BALANCING EQUATION?

[匿名]

回覆: 1

2016-05-31 4:06 pm

Need Solution with steps for this Probability Question?

[匿名]

回覆: 1

2016-05-31 1:28 pm

Find the number of moles of the ions.?

[匿名]

回覆: 2

2016-05-31 2:16 pm

Pb(NO3)2 (aq) is combined with NaBr (aq). Is a precipitate formed? If so, what is formed?

[匿名]

回覆: 1

2016-05-31 12:56 pm

Help with chemistry homework please?

[匿名]

回覆: 1

2016-05-31 12:47 pm

please explain how ClO3- has a tetrahederal shape?

[匿名]

回覆: 4

2016-05-31 12:27 pm

if tan27=p with the aid of a diagram express sin 63 , cos(-126),cos18 in terms of p without a calculator.?

[匿名]

回覆: 1

2016-05-31 12:06 pm

2 mechanics questions?

[匿名]

回覆: 1

2016-05-31 11:59 am

Chemistry - Rate Law question?

[匿名]

回覆: 5

2016-05-31 11:55 am

Please help with this question. Thanks.?

[匿名]

回覆: 2

2016-05-31 10:44 am

In chemistry, what does the double line mean on a skeletal formula? [photo]?

[匿名]

回覆: 1

2016-05-31 10:18 am

http://i67.tinypic.com/6iek47.jpg - Question 30 why is the answer (a)..?

[匿名]

回覆: 1

2016-05-31 10:50 am

Chemistry Equilibrium question, please help!?

[匿名]

回覆: 1

2016-05-31 10:35 am

Chemistry question - Equilibrium?

[匿名]

回覆: 2

2016-05-31 8:57 am

Charlie's Law?

[匿名]

回覆: 2

2016-05-31 9:01 am

When 2x^2+(4-p)x-2p=0,x=-2 is a solution. Which is a factor of 2x^2+(4-p)x-2p a) 2x-p b)2x+p c)4-p d)x-2p Please show work. Thank you :)?

[匿名]

回覆: 1

2016-05-31 8:59 am

Help me with math pls, it's hard?

[匿名]

回覆: 3

2016-05-31 8:53 am

6) Solve for x: (1/5)^x = 5^x+6?

[匿名]

回覆: 2

2016-05-31 3:10 am

1)Use stoichiometry to determine the molarity of the acetic avid(vinegar). NaOH+(HC2H3O2)->H2O+NaC2H3O2 Volume of acid:ml:5.0?

[匿名]

回覆: 2

2016-05-31 3:43 am

calculate the total volume of all of the combined gases if they were mixed together into a new container(assume at stp): 1.20•10^25 atoms of?

[匿名]

回覆: 2

2016-05-31 3:50 am

Calculate the amount of heat that's released when 45 grams of nitrogen reacts to form NH3?

[匿名]

回覆: 1

2016-05-31 3:54 am

A Weak base is added to a 0.20M Concentration. The resulting solution has a [OH-] = 3.16x10^-6. What is the Kb and pH?

[匿名]

回覆: 1

2016-05-31 5:38 am

A Weak base is added to a 0.20M Concentration. The resulting solution has a [OH-] = 3.16x10^-6. What is the Kb and pH?

[匿名]

回覆: 1

2016-05-31 4:51 am

Determine the partial negative charge on the fluorine atom in a C−F bond. The bond length is 1.39 Å and the bond dipole moment is 1.60 D .?

[匿名]

回覆: 1

2016-05-31 5:09 am

On passing 0.1 Faraday of electricity through AlCl3 the amount of aluminium metal deposited on the cathode is (at mass of Al = 27)0.9 g how?

[匿名]

回覆: 1

2016-05-30 8:30 am

有一生物化石標本碳14比例是現今1/16請問其生存年代距今多久?

[匿名]

回覆: 2

2016-05-30 12:04 pm

F.1 Science 問題?

[匿名]

回覆: 2

2016-05-31 3:44 am

由 6 個男生，4 個女生中選出一個 5 人委員會，其中規定男女生至少各有二人，則有 種選法‧?

[匿名]

回覆: 2

2016-05-31 1:23 am

Chemistry question plz help!!?