不用客氣

[匿名]

回覆: 2

2016-07-08 6:28 pm

Al + MnO2 --> Al2 O3+ Mn Balance this euation?

[匿名]

回覆: 1

2016-07-08 1:49 pm

You mix 7.6 g of calcium and 81.1 g of iodine to form calcium iodide. How many moles of calcium iodide will be produced?

[匿名]

回覆: 1

2016-07-08 4:00 pm

You mix 27.99 g of calcium and 70.6 g of iodine to form calcium iodide. How many moles of calcium iodide will be produced?

[匿名]

回覆: 3

2016-07-08 10:31 am

Plz help Inequality?

[匿名]

回覆: 1

2016-07-06 8:11 am

Find the rectangular coordinates for the point whose polar coordinates are given.?

[匿名]

回覆: 2

2016-07-06 4:13 am

Find the identical expression for: cos^4t-sin^4t/cos^2t?

[匿名]

回覆: 4

2016-07-05 3:25 pm

past paper question?

[匿名]

回覆: 2

2016-07-05 8:19 am

The volume of methane, ch4 at STP required to completely consume 3.50L of oxygen at STP?

Muhammad

回覆: 2

2016-07-04 6:31 pm

What is the difference between Alkylation and Acylation?

[匿名]

回覆: 2

2016-07-03 7:10 pm

What volume of 0.250 M H2SO4 is needed to react with 50.0 mL of 0.100 M NaOH?

[匿名]

回覆: 2

2016-07-03 4:54 pm

f(x)=x^3-5x^2+3x+1 find its critical points in the interval [0,1]?

[匿名]

回覆: 3

2016-07-03 4:13 pm

A ball is dropped from a top of a building. Describe the speed of the ball?

[匿名]

回覆: 2

2016-07-03 2:43 pm

Convert the ff: 15 km to cm 27.8 mg to Mg. 10 dm2 to mm2 350 ml to cm3?

[匿名]

回覆: 1

2016-07-03 12:22 pm

the decomposition of hydroden iodide has a rate constant of 0.00000000951M/s at 500K and 0.0000110 at 600K find Ea?

[匿名]

回覆: 4

2016-07-03 10:47 am

Quadratic equations? 3x^2-12×+(n-5)=0 equal roots find n?

[匿名]

回覆: 2

2016-06-30 7:55 pm

What is 8+6|6-4x|=20?

[匿名]

回覆: 2

2016-06-30 4:15 pm

First order kinetics problem?

[匿名]

回覆: 4

2016-06-30 11:56 am

If l:m =1 1/2 : 1 3/4 and m:n= 2 1/3 : 4 1/5. Find l:m:n. Pls help?

[匿名]

回覆: 5

2016-06-27 5:53 pm

Evaluate the expression for the given value of the variable(s). -x 2 - 4x; x = -3?

[匿名]

回覆: 5

2016-06-26 9:55 pm

the sum of four consecutive integers is 2016. what are the integers?

[匿名]

回覆: 1

2016-06-07 10:06 am

Http://i63.tinypic.com/332qdn8.jpg - Question 1２ why is the answer (D)..?

[匿名]

回覆: 1

2016-06-06 9:44 pm

Chem 20 Stoich Question- Urgent! Thank you!?

[匿名]

回覆: 2

2016-06-05 7:16 pm

Is Zinc Water Soluble?

[匿名]

回覆: 2

2016-05-31 8:24 am

http://i66.tinypic.com/2s966o5.jpg - Question 26 why is the answer (c)..?

[匿名]

回覆: 1

2016-05-30 8:28 am

The electronic structure of an element is 2,8,6. What does this mean?

[匿名]

回覆: 3

2016-05-30 8:21 am

find value of a3-27b3 if a-3b=-6 and ab=-10?

[匿名]

回覆: 2

2016-05-30 8:07 am

There is a question on my science study guide that i could not find the answer to. Can anyone help? Thanks in advance?

[匿名]

回覆: 3

2016-05-29 5:45 am

Is 10^5 in scientific notation? Why or why not?

[匿名]

回覆: 3

2016-05-27 4:26 pm

Is this math problem solved right?

[匿名]

回覆: 2

2016-05-25 4:24 pm

Calculate ?H for the following reaction of nitrous oxide with oxygen.?

[匿名]

回覆: 2

2016-05-25 4:25 pm

Ammonia (NH3) can be synthesized from nitrogen gas (N2) and hydrogen gas (H2) by the following reaction. N2(g) + 3 H2(g) → 2 NH3(g)?

[匿名]

回覆: 2

2016-05-25 4:27 pm

The total pressure exerted by a mixture of hydrogen, oxygen, and nitrogen gases is 2.1 atm.?

[匿名]

回覆: 1

2016-05-25 4:29 pm

Enter the net ionic equation, including phases, for the reaction of..?

[匿名]

回覆: 3

2016-05-25 4:20 pm

Chemistry Check My Answer!?

[匿名]

回覆: 1

2016-05-25 3:24 am

what is the number of kilograms of solvent in a 0.70 molal solution containing 5.0 g of solute molar mass os solute is 30 g?

[匿名]

回覆: 1

2016-05-24 5:59 pm

Chemistry Homework Help!?

[匿名]

回覆: 2

2016-05-23 12:33 pm

a / 1-r = 4a?

[匿名]

回覆: 1

2016-05-17 9:04 am

CHEM (Equilibrium) In water, the following equilibrium exists: H+(aq) + OH-(aq) <--> H2O(l) In pure water at 25 °C, the concentration of?

[匿名]

回覆: 1

2016-05-16 9:00 am

Why does silver nitrate degrade?

[匿名]

回覆: 4

2016-05-12 10:21 am

common denominator of 15 and 20?

[匿名]

回覆: 1

2016-05-11 6:09 pm

What is the pressure of the ideal gas n the volume is decreased to 4.0 L and the temperature is increased to 265 K?

[匿名]

回覆: 1

2016-05-11 5:09 pm

Find k so that 2/3 - k, k , 5/8 - k consecutive are three terms of an A.P?

[匿名]

回覆: 2

2016-05-11 10:46 am

Calculate the mass in grams of single gold atom....How?

[匿名]

回覆: 1

2016-05-09 10:30 pm

500 g of an unknown protein containing 3 cobalt atoms was analyzed for cobalt composition and was found to have 7.2 grams of cobalt.?

[匿名]

回覆: 3

2016-05-09 9:30 pm

I NEED CHEMISTRY HELP?

[匿名]

回覆: 1

2016-05-09 8:27 pm

How many moles of oxygen may be produced from the decomposition of 3.6 moles of potassium chlorate?

[匿名]

回覆: 1

2016-05-07 1:39 pm

can anyone explain the double indicator as simple as you can and with few details?

[匿名]

回覆: 1

2016-05-06 2:59 pm

how many liters of water vapor will be produced at 1.00 atm and 200 deg c by the complete combustion of 10.5 L of my methane gas?

[匿名]

回覆: 1

2016-05-06 4:06 am

± Electrolysis and Current?

[匿名]

回覆: 1

2016-05-06 4:10 am

± Electrolysis and Current?