fooks

[匿名]

回覆: 2

2016-06-22 4:44 pm

Prepare 2.50 M solution of sodium chloride. You only have 0.325 moles of sodium chloride, and must use it all, how many mL must you prepare?

[匿名]

回覆: 2

2016-06-22 3:36 pm

Chemistry - Chemical Bonds Question?

[匿名]

回覆: 1

2016-06-22 3:49 pm

How many ways can a football team schedule 3 games with 3 teams if they are all available on any of 5 possible dates?

[匿名]

回覆: 1

2016-06-22 3:53 pm

What are the first three of an arithmetic sequence whose last term is 1 if the comon diffirence is 5. Tere are 14 terms in the sequence?

[匿名]

回覆: 1

2016-06-22 3:03 pm

Find the volume of the solid generated by revolving the region x=y^2+1 and the line x=3 about the line x=3 (use horizontal slicing)?

[匿名]

回覆: 2

2016-06-22 10:40 am

Probability?

[匿名]

回覆: 3

2016-06-22 10:25 am

Maths question!?

[匿名]

回覆: 1

2016-06-22 10:07 am

how to find percentage of oxygen by weight in HCOOH?

[匿名]

回覆: 2

2016-06-22 9:56 am

Mathematics - Integration?

[匿名]

回覆: 3

2016-06-22 9:55 am

How to solve N+15=35-N?

[匿名]

回覆: 2

2016-06-22 9:51 am

Consider the following reaction 1)A+BX gives AX+B 2)B+CY gives BY+C Arrange A,B,C in increasing order of their reactivity?

[匿名]

回覆: 1

2016-06-22 9:24 am

Electrolysis to calculate atomic mass- PLEASE HELP?

[匿名]

回覆: 2

2016-06-22 8:58 am

Suppose you wanted to make a metal tank to hold copper sulfate solution. Which would be the best metal to use? Why?

[匿名]

回覆: 1

2016-06-22 7:57 am

What is the valency of h2so4?

[匿名]

回覆: 1

2016-06-22 8:02 am

what do you expect would happen if you put a piece of sodium in hydrochloric acid? explain why.?

[匿名]

回覆: 3

2016-06-22 8:37 am

what does ----> mean when someone writes an equation on (in?) yahoo answers please? Very confused....... 5* to top answer!!!XXX?

[匿名]

回覆: 1

2016-06-22 8:05 am

predict what would occur if the following were placed in water?

[匿名]

回覆: 3

2016-06-22 8:07 am

Does rate of a reaction change if reaction equation is multiplied by a number and if it does change then why?

[匿名]

回覆: 2

2016-06-22 3:39 am

A 125mL sample of dry air at 230C is cooled to 100C at constant pressure. What volume will dry air occupy at 100C?

[匿名]

回覆: 1

2016-06-22 4:55 am

Chemistry Help!?

[匿名]

回覆: 1

2016-06-22 6:34 am

Iron scientific name?

[匿名]

回覆: 1

2016-06-22 6:26 am

the following reaction is exothermic. 2Na(s)+Cl2(g)=2NaCl(s) A) what is the sign of delta H for this reactantion?

[匿名]

回覆: 4

2016-06-22 6:01 am

Determine a point on the curve x=cos^3θ,y=sin^3θ,0<=θ<=pi/2 where the tangent is parallel to the curve joining (a,0) and (0,a)?

[匿名]

回覆: 1

2016-06-22 6:02 am

studying for a physics test, how do you do this problem?

Joanne

回覆: 4

2016-06-22 5:20 am

A ball is kicked off a pier & lands in the sea. h(t)=2/7(t+3)(7-t) h=height, t = secs. When does the ball land in the sea?

[匿名]

回覆: 1

2016-06-22 5:29 am

if we make a buffer by mixing 0.030 mol hcl with 0.050 mol ch3coo-(aq) in 2.00L, what is the pH?

[匿名]

回覆: 1

2016-06-21 6:17 pm

What was its initial temperature?

[匿名]

回覆: 1

2016-06-21 6:19 pm

Identify the substance that has formula mass of 133.5 amu a. MgCI2 b. S2CI2 c. BCI3 d. AICI?

[匿名]

回覆: 2

2016-06-21 6:09 pm

Chemistry KCLO3 Question?

[匿名]

回覆: 4

2016-06-21 6:04 pm

Please help. Thanks.?

[匿名]

回覆: 2

2016-06-21 5:46 pm

Solve the following trigonometric equation where 0° <= x <= 360°. 6cosxsin^2x + cos^2x - 5cosx = 0?

[匿名]

回覆: 1

2016-06-21 5:09 pm

The water in the two beakers is mixed. What is the final water temperature?

[匿名]

回覆: 1

2016-06-21 5:23 pm

Help me with this chemistry question.?

[匿名]

回覆: 2

2016-06-21 5:09 pm

734mL of a 1.13M calcium sulfate solution is diluted with 2.56L of water. What is the new concentration in molarity?

[匿名]

回覆: 2

2016-06-21 4:52 pm

prove that :?

[匿名]

回覆: 1

2016-06-21 4:50 pm

Ionization reaction for nitric acid???!!!?

[匿名]

回覆: 1

2016-06-21 4:56 pm

What is the ionization reaction for nitric acid !! PLEASE HELP?

[匿名]

回覆: 10

2016-06-21 4:51 pm

What is the mass of 1.00 liter of nitrogen at STP?

[匿名]

回覆: 1

2016-06-21 4:45 pm

x grams of iron(III) hydroxide (106.9 g/mol) will precipitate if excess iron(III) nitrate is added to 0.850 L of 1.26 M sodium hydroxide?

[匿名]

回覆: 1

2016-06-21 4:12 pm

http://i65.tinypic.com/xqdkjs.jpg - Question 23 why is the answer (c)..?

[匿名]

回覆: 4

2016-06-21 3:58 pm

3/10 minis 1/4?

[匿名]

回覆: 2

2016-06-21 3:57 pm

Calculate the heat involved?

[匿名]

回覆: 7

2016-06-21 3:45 pm

how many atoms are in 0.68 moles of strontium?

[匿名]

回覆: 1

2016-06-21 3:29 pm

http://i68.tinypic.com/alg188.jpg - Question 19 why is the answer (c)..?

[匿名]

回覆: 4

2016-06-21 3:37 pm

please help please. find the derivative 1)dy/dx if y(x)= square root x^2+9?

[匿名]

回覆: 1

2016-06-21 2:56 pm

Chemistry Help?

[匿名]

回覆: 1

2016-06-21 2:59 pm

Hypobromite is used to purify contaminated water. What is the formula for hypobromite?

[匿名]

回覆: 2

2016-06-21 2:55 pm

If x is the sum of the odd numbers from 1 to 100 and y is the sum of the even numbers from 1 to 100, which is greater, x or y? By how many?

[匿名]

回覆: 3

2016-06-21 2:52 pm

can somebody prove (1 - E^(-2/x))/(1 - E^(-1/x)) equals to E^(-1/x)+1 where E is exponential?

[匿名]

回覆: 4

2016-06-21 2:47 pm

What number multiplied by itself is equal to the product of 8 and 98?