# re-apchem post

4,949 results

### apchem

what is the density of vinegar? thanks

### apchem PLease Answer

What is the equation for HOCl dissolves in HOH? I don't get it...

### apchem

can someone explain the synthesis reaction from ethane to acetylene?

### Apchem

What are the initial conditions on the ICE table for the common-ion effect?

### APChem

Hi Does red cabbage contain one or many anthocyanins & how do you know? this really helps--thank you!

### APChem

does anyone know a good website i could look at so i could answer this question: ? Explain how indicators work using a chemical reaction as part of your explanation. Any websites? please? thank you!!

### Math

A farmer builds a straight fence that's 49 ft. He puts a post every 7ft. How many post does he need. A post is at the beginning and end How can you show the relationships in the problem Solve and explain your reasoning 8 post. I cans draw a picture

### Math 117

Explain how to divide a polynomial by a binomial using an example. (Please refer to the post “How to post equations” in the Main Forum to post your response with correct equations/expressions showing.) Make sure you post the explanation as well as the example.

### Kristin, Physical Science

Just post your question. When you post under someone else's post, it's apt to be missed. Sra

### Biology

I think my questions were skipped over ignore this post if this is not so... h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 7 0 5 2 8 h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 6 9 0 4 4 please post ...

### physics

A mass with an initial combined potential energy and kinetic energy of 10,000 joules is dropped onto a fence post to drive it into the ground. The post is driven 0.25 meters into the ground before it comes to rest with the mass sitting on top of the post. How much work was ...

### physics

One end of a post weighing 400 N and with height h rests on a rough horizontal surface with Ks=0.30. The upper end is held by a rope fastened to the surface and making an angle of 36.9^\circ with the post. A horizontal force F_vec is exerted on the post as shown. (Figure 1) ...

### English

1. Can I ask you to wash the dishes? 2. May I ask you to wash the dishes? 3. Might I ask you to wash the dishes? --------------------- What is the difference between #1 and #2? Do you use #3? ================================ 4. Where can I find the post office? 5. Where is the...

### socials

I try to post and see if work. It happen to me like this that one day I be able to post the other day not. That so weird. Thanks for help with my assignments days ago ms. sue. I ask my sister to post them for me my computer not work for Jiskha. If this be able to post I be so ...

### APChem

Hi! Thank you for your help... A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 66.2 mL of KOH is ______M. (The answer is supposed to be 1.00X10^-7) How do I set this problem up? I realize that it is a ...

### Physics......

A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest point over the lower ...

### Physics

A ball on a 6.5 m long string swings down and wraps around a post that is 4.0 m below the post the string is attached to. If the ball is released level with the post to which it is attached, what will be the velocity of the ball when it is at its highest point over the lower ...

### math

An electric post was broken by a strong typhoon.It formed a right triangle with the ground.If a broken part makes an angle of 25 degrees with the other part,and the topmost part of the post which is post which is on the ground is 40 ft from the base,how tall was the post?

### To Debela Duguma

Your question tucked at the end of another post was probably lost. Post the complete question as a new post if you would like help.

### English - ms. sue

ms. sue my sister make account on here and i post site where i put my questions but my post not post.

### Geometry

I have two post that meet the ground perpendicular and the ground is level. One post is 40 feet high, the other is 25 feet high. If I draw a hypotenuse from the top of one post to the base of the other post and another hypotenuse from the top of the other post to the base of ...

### APCHEm urgent!!!!!!

Hi thank you so much!!!! What is a net ionic equation for the reaction of H+ with Cu(NH3)4 ^2+ ALSO what is the net ionic equation for the reaction of H+ with Hg2Cl2 Does the H+ addition increase, decrease, or has no impact on the solubility of the salt.?

### ed tech HELP PLS

why is it important to take responsibility for your online publications? a. What you post can hurt or slander others*** b. people will know who the author is c. your parents need to see what you post d. what you post is important for your grade

### apchem

A 15.0g sample of liquid ethanol, C2H5OH, absorbs 5.13x10^3 J of heat at its normal boiling point, 78.0C. The molar enthalpy of vaporization of ethanol is 39.3kJ/mol. (a) What volume of ethanol vapor is produced? The voume is measured at 78.0C and 1.00atm pressure. (b) What ...

### math

twelve posts stand equidistant along the stadium. starting at the first post, a runner reaches the eight post in 8 seconds. if he runs at a constant rate, how many seconds are needed to reach the twelfth post?

### math

Three points P, Q and R are on a level ground. Q is 240m from P on a bearing of 230°. R is 120m to the east of P. (a) Using a scale of 1cm to represent 40m, draw a diagram to show the positions of P, Q and R in the space provided below. (b) Determine : (i) the distance of R ...

### Art (Forgot to post this in my last post)

Sorry, forgot to post this in my last post When using a green screen for filming, the 3D element would be _______ A) the green screen B) The actor or actress**** C) The specialized software D) The image on the green screen It would be B though, right??

### to Hussam

Please click on Post a New Question when you need to post a question. When you post in response to another question, it gets lost. =)

### English proposal

I am going to post my proposal here so can someone please edit it? When I post it can you quickly copy and paste into a document and delete my post from here so it won't be public?

### Calculus

At a certain point on the beach, a post sticks out of the sand, its top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation d=40+60cos(pi/6(t-2)) where t is the ...

### math

a post is driven into the ground. the first strike drives the post 30 inches into the ground. the next strike drives the post 27 inches into the ground. assume these distances form a geometric sequence, what is the total distance the post is driven into the ground after 8 ...

### math

a post is driven into the ground. the first strike drives the post 30 inches into the ground. the next strike drives the post 27 inches into the ground. assume these distances form a geometric sequence, what is the total distance the post is driven into the ground after 8 ...

### APChem

Hi I tried to understand this but I don't know why the answer is B: Which one of the following pairs cannot be mixed together to form a buffer solution: A) NaC2H3O2, HCl B)RbOH, HBr C) NH3, NH4Cl D) H3PO4, KH2PO4 E) KOH, HF The answer is B but could you explain why? I know its...

### APChem

Is this true or false?:A buffer can be destroyed by adding too much strong acid. I thought that a buffer can be destroyed by adding too much weak acid, but I'm not sure...

### To Ani - re Afrikaans post

I have deleted your post because you included your email address in it. That is not a safe thing to do online. Please remember NOT to post any personal information. Please also remember to ask a specific question. No one will be able to help you if you don't let us know ...

### Math-calculus

At a certain point on the beach, a post sticks out of the sand, it's top being 76 cm above the beach. The depth of the water at the post varies sinusoidally with time due to the motion of the tides. The depth d is modeled by the equation d=40+60cos(PI/2(t-2)) where t is the ...

### trigonometry

A guy wire from the top of a telephone post touches the ground at a point 7 meters from the foot of the post. If the wire and the post make an angle of 56°40', find the length of the guy wire.

### College Physics

A 50 kg skater moving at 5 m/s over frictionless ice grabs a rope stretched out 10m from a post and perpendicular to her path. She then moves in circles, spiraling inward as the rope wraps around the post. How fast is she moving when she is 2 meters from the post?

### physics

Tetherball is a game played by kids. The equipment consists of a volleyball on a string, with the other end of the string tied to the top of a post. Kids hit the ball back and forth around the post. Consider a volleyball of total mass 200 g attached to the top of a post by a 2...

### physics

A fence post is 52.0 m from where you are standing, in a direction 37.0 degree north of east. A second fence post is due south from you. What is the distance of the second post from you. If the distance between the two posts is 80.0 m?

### physics

A fence post is 52.0 m from where you are standing, in a direction 37.0 degree north of east. A second fence post is due south from you. What is the distance of the second post from you, if the distance between the two posts is 80.0 m?

### Physics

A fence post is 50.0 m from where you are standing, in s direction of 37.0 degree north of east. A second fence post is due south from you. What is the distance of the second post from you,if the distance between the two posts is 80.0?

### To Ian

I've removed your post because you put your email address in it. That's not a good or safe thing to do online. If you wish to re-post your question, that's fine. Just don't include any personal information, such as your full name, email address, etc., if you don't want your ...

### english

i need help with my english....BUT i can't post it for some reason ...it says that i can't post a link, but i didn't even post a link

### How to post links

How do you post links on here? I tried to post one, but it didn't let me.

### Buddha Story....

May I post a Buddhist Koan (parable or riddle) that I wrote myself and get a critique of it? I already showed it to some of my Buddhist friends at the Pao Fa Temple and they really liked it. No. It is not homework, and we do homework help, and do that pretty well. We do not do...

### French for Suzana

I just spent an hour trying to post things for you, using "Post a New Question." I think because it didn't have MY name as "First Name" it didn't post! No way can I do that all over. Here is Equipe 1 and 2 online but Oxford University Press has nothing on Equipe 3 or 4. (...

### APChem

"The osmotic pressure of a saturated solution of strontium sulfate at 25C is 21 torr. What is the solubility product of this salt at 25C (Hint: calculate molarity from the colligative properties eqn of osmotic pressure and use it in the equilibrium expression" I converted torr...

### calculus

A person 150cm tall is walking away from a lamp post at the rate of 15 meter per minute. when the man is 2.5m from the lamp post, his shadow is 3m long. Find the rate at which the length of the shadow is increasing when he is 7m from the lamp post.

### Re Literary post with questions

Your post has been removed. 1. Choose a more appropriate screen name. Further posts with that name will be removed. 2. Once you write up YOUR THOUGHTS, please re-post with a suitable screen name, and someone here will be happy to comment.

### trigonometry

Solution of problem: An electric post was broken by a strong typhoon .it rmed a right triangle with the ground.If a broken part makes an angle of 25 degrees with other part and the topmost part of the post which on the ground is 40 feet from the base ,how tall was the post?

### about this site please read

im trying to post something but it says I cant because youre not allowed to post internet addresses but I don't have any in my post please help. You likely have a www in the text. nope read it over and over .is that the only thing it could be because I really need to post this...

### Math-reasoning

A farmer wants to build a straight fence with a post every 7 feet. Each end has a post. For a fence that is 49 feet long, how many posts will the farmer need? Describe the quantities given Tell how you can show the relationships in the problem Solve and explain your reasoning ...

### HEALTH

What does PTSD stand for? A. Post-traumatic stress disorder B. Post-traumatic stressor disorder C. Post-traumatic sensation disorder D. None of the above A?

### Algebra

At the time of George W.Bush's presidency, there have been 43 presidents of the United States. Draw a Venn diagram showing the following facts about where each served before assuming the presidency. How many presidents served as vice-president and in the Senate, but did not ...

### math

At the time of George W.Bush's presidency, there have been 43 presidents of the United States. Draw a Venn diagram showing the following facts about where each served before assuming the presidency. How many presidents served as vice-president and in the Senate, but did not ...

### Algebra

At the time of George W.Bush's presidency, there have been 43 presidents of the United States. Draw a Venn diagram showing the following facts about where each served before assuming the presidency. How many presidents served as vice-president and in the Senate, but did not ...

### Math

The National Park Service is building a 16-mile hiking trail.They will post a sign every 1/8 mile along the trail, including one at the end.There will not be a post at the beginning of the trail.How many signs will they post along the trail?...

### math

shadow of a goal post is 6m longer when the elevation of the sun is 30° then when it is 60° calculate the hight of the post?

### english

i want to post a story of mine can anyone tell me any website where i can post one.....plz say

### Problem

I was wondering why after you post a lot of questions it wont let u post any more plz help.

### To Jane

I look for but did not find the post on pH of CO2 equilibrated with H2O. If you will post that again perhaps I can help.

### To Minnie

I've deleted your earlier post and its thread. Post your next question whenever you're ready.

### Calculusss heeelp plzzz

A rocket is being tracked from a radar post that is 10 km from the launch pad.the rocket arises vertically at a height of 17.32 km and then turns at an angle of 30 degrees fron the vertical directly away from the radar post .it then travels at the constant speed of 12000 km/...

### physics

Tetherball is a game played by kids. The equipment consists of a volleyball on a string, with the other end of the string tied to the top of a post. Kids hit the ball back and forth around the post. Consider a volleyball of total mass 200 g attached to the top of a post by a 2...

### quick ?

I just emailed the site to post my spanish question that it wont let me post. What happens now?

### Problem Posting

trying to post a question, but it says I'm not allowed to post internet addresses--but I'm not. any ideas on this?

### Inquiry

Is there an easy to retrieve the response to a post? Any ideas Do I have to scroll through till I find my "post"?

### Help!

I was wondering if someone could show me how to post links on this website. It gives me an error when I try to post a link in my reply.

### Math

Which rule matches the function graphed below? I cant post sites and I need to post my graph. 1.y = –2x (MY ANSWER) 2.y = 2x 3.y = x – 4 4.y= x + 4

### Physics

A motorcycle is travelling at a constant acceleration in a straight line. When it passes by the first lamp post, it is travelling at 10ms-1. When is passes by the next lamp post which is 200m from the first lamp post, the motor cycle is travelling at 16 ms-1. What is the ...

### QUESTION FOR ALL!!

Where is Ms. Sue??? I haven't seen her post any answers for a while now. She's such a help!! Does anyone know where she is? Post any comments. ~aShLeY

### to Dr Jane

Please don't post incorrect answers to students questions. If you're the least bit unsure, don't post anything at all.

### Art

Writeacher, could you please check this sentence? Thank you. 1) He dropped me off at the post office. How would you rephrase it? He let me get (out of the car) at the post office. He made me get off the bus at the post office. within the end of the week is not the same as by/...

### CRT 205 - Anonymous

Your post was removed. Once you write up YOUR THOUGHTS, please re-post, and someone here will be happy to comment.

### English -- ann

Your post has been removed. Once you write up YOUR THOUGHTS, please re-post, and someone here will be happy to comment.

### for Stephanie re HIS/115

Your post has been removed. Once you write up YOUR THOUGHTS, please re-post, and someone here will be happy to comment.

### dr.bob222

when you get a small little chance can you check my math in last message i posted. thank you. I read the post earlier but didn't post a response because I was confused by the c in the formula.

### geography

he kind of economy that was created in Pittsburgh is called a. post-industrial. c. post-modern. b. commodity-based. d. twenty-first century.

### To: Linda mogale

I deleted your post because you included a phone number. Please do not post personally identifiable information on Jiskha, You should do what YOU want to do for a career.

### Math

please help with this question .Name two planes that intersect in UV in the figure to the right. I have a diagram to post as well is their a way to post it here ?

### To Bob DD

Because of your terribly rude and uncalled-for remarks directed at one of our tutors, your ugly post was removed. Please do not post here again.

### to Mary - re "Math (basic statistics) ..."

Your post has been removed. Once you write up YOUR THOUGHTS, please re-post, and someone here will be happy to comment.

### Chemistry+last post

can someone reply to my last post?

### To pamela smalls re adult education

Your post has been removed. Once you write up what YOU THINK the answers are, please re-post, and someone here will be happy to comment.

### To Bridgett

Your post has been removed. Jiskha is NOT the place to post ads for anything, no matter how noble you may believe they are. Please use another forum for such communications.

### Jiskha

I can't find my last spanish post from yesterday... Also, the search box now doesn't take me to my most recent post if I type in "mysterychicken" like it used to; why not? Thanks -MC

### Physics

Car A passes a light post moving at 25m/s and continues at this speed. Two seconds later, another car passes the light post moving at 40m/s. Assuming no acceleration of either car. a)How much time will it take for the second car to catch up with the first car? b)How far from ...

### Geometry

I HAVE A QUESTION. When I post a question and there is now response to it does it means that my answer to my questions are correct? I post two questions yeaterday and received no response .Today I post the same two questions and still got no response. They are math questions ...

### Physics

On a flat golf course, a golf ball lies 12m from the base of a lamp post. A golfer hits the ball with a club, giving the golf ball an initial velocity of 18 m/s. At 2.9 seconds, after being hit, the golf ball strikes the top of the lamp post. How high (m) is the lamp post?

### Physics

A series of pulses, each of amplitude 0.190 m, are sent down a string that is attached to a post at one end. The pulses are reflected at the post and travel back along the string without loss of amplitude. (a) What is the displacement at a point on the string where two pulses ...

### IT210

Why do you think the requirements analysis process is so difficult? Describe two things you can do to overcome these difficulties. Post a Hello World pseudocode or coding example in your post.

### sat

A fence consist of sections built in a row. the figure above shows the first two sections of the fence. each section is identical and consists of two horizontal boards between consecutive vertical posts. each post cost $ 8 and each board coat $6. If the total cost of the ...

### calc

a man 6 feet tall is walking away from a lamp post at the rate of 60 feet per minute. when the person is 6 feet from the lamp post, his shadow is 12 feet long. find the rate at which the length of his shadow is increasing when he is 145 feet from the lamp post

### To Jiskha Teachers ~

Please reply my science post I really want to know if Im correct because I just post and you ignore it. PLEASE check it. Thank You! :)

### math

A girl 1.6 m tall, stands 3.6 m from a lamp post at night. Her shadow from the light is 0.9m long. How high is the lamp post?

### calculus

A lamp post 3m high is 6m from a wall. A 2m man tall is walking directly from the post toward at 2.5m/s. How fast is his 1.5 from the wall

### Last chemistry post

Can someone please reply to my previous post about chemistry preferable DrBob since he was helping me on it, but anyone is fine.

### Spanish, posted Sept. 14

Please go back to your original post for additional information. Please also post a name! Sra