Wednesday

May 6, 2015

May 6, 2015

Number of results: 78,949

**HEY DRWLS!! I have a question**

You're a genius, so can you please help me with my advanced algebra question. I posted it down below!! Thanks:) Miley
*January 29, 2008 by Miley*

**math**

Posted by mota THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------- math - drwls 1000. ----------------------- explain please i want to understand this question :) this is my question i posted ...
*March 2, 2008 by mota*

**drwls & Damon - maths**

hey guys, i follow you up to the point of intergrating the final line. How would I intergrate [x^-2.e^-x] dx thx
*December 29, 2007 by xX_Supaman_Xx*

**calculus**

Jena. Stop it, or you will be banned. Using the chain rule, how do i solve this problem? g(x)=(sin3x)^3 g'(x)=?? 3sin(3x)^2 • 3 i think *w*w*w*.*a*s*k*.*c*o*m* hey i cant help but heres a hint just go 2 (go on the words w/ the stares around them )and ask the question *w*w*w*.*...
*February 21, 2007 by bobpursley*

**physics: drwls**

drwls for the question below, the answer seems to be wrong: The four tires of an automobile are inflated to a gauge pressure of 1.8 multiplied by 105 Pa. Each tire has an area of 0.025 m2 in contact with the ground. Determine the weight of the automobile. It asks for the ...
*July 22, 2008 by Elisa*

**chemistry**

Predict the precipitate that forms: HCl + AgNO3 --> ??? i dont know what the answer is but i think it is Cing04 AgCl. You need to learn the solubility rules. If you don't have a web site I can give you one. hey watz up can you help me with a question please? If you have a ...
*January 29, 2007 by key*

**math**

Posted by mota on Saturday, March 1, 2008 at 3:34am. THE MASS OF THE SUN IS ABOUT 10^27 METRIC TONS , OR 10^30 KILOGRAMS . HOW MANY KILOGRAMS ARE IN ONE METRIC TON ? ----------------------------- math - drwls 1000. ----------------------------- explain please i want to ...
*March 2, 2008 by mota*

**physical science**

How to learn to do the formulas for finding speed, distnace, and etc.?? *w*w*w*.*a*s*k*.*c*o*m* hey i cant help but heres a hint just go 2 (go on the words w/ the stares around them )and ask the question *w*w*w*.*a*s*k*.*c*o*m* hey i cant help but heres a hint just go 2 (go on...
*February 21, 2007 by Jake*

**Algebra 2**

Hey, I don't understand this question I have honestly done this question about a good 3 times but never seemed to get the right answer. Please Help!!! Solve each equation by factoring. Check your answers. 7x^2=21x
*November 13, 2014 by Taylor*

**Math**

Hey I have a question, what does is mean when a function is/not differentiable? thank you.
*February 1, 2010 by Anonymous*

**math help**

did anybody answer my question drwls answered your geometry question.
*October 3, 2006 by jessica =]*

**music yr 8- re- drwls**

thankyou drwls for your help on buddy holly
*September 22, 2008 by astra*

**re-drwls-geography**

thanks for your help i would have labelled my question geology but it is for geography sorry
*February 8, 2011 by polly*

**science**

Hey I have another question, what is the impact of the space pen to the society?? Thanks sooooooooo much if you can help
*October 22, 2008 by Aimee*

**Math**

I posted these 2 questions a couple of days ago and although the help I received would have been more appreciated if it didn't come with an underhanded comment, I did see where I made my mistake with the first question, however I would like to know with the second question, ...
*November 20, 2010 by Dania*

**agebra**

Hey, im a little confused with this question: 2^n x 4^(n+1) / 8^(n-2) I have to change all bases to 2 then simplify fully. Thanks everoyne.
*March 11, 2008 by jack*

**algebra**

Hey, im a little confused with this question: 2^n x 4^(n+1) / 8^(n-2) I have to change all bases to 2 then simplify fully. Thanks everoyne.
*March 12, 2008 by Jack*

**Planning**

Hey, I have another question from my assignment. 2.How do the course choices (both elective and required) that I make today lead to the fulfilment of this dream? My dream is to become a dental hygienist or a family physician one day, and along with that to be cashier. Im ...
*August 28, 2010 by Anonymous*

**English **

Hey, Yesterday I asked a question about "the" and Writeacher helped me a lot. But now I have a further question. I have a rule in my grammar book, which says, that Nationalities with the suffix -ese. -ch, -sh, -ss; goes with the. And wirteacher says that I can Also says "The ...
*December 17, 2012 by Minnie*

**earthquake engineering**

Hey everybody! I have a question I would like to share and ask you. We have a soil layer with medium gravel which has a depth of 38 m. We want to build a multi storey framed building safely with a fundamental period of 1.7 sec.Do you think it will be safe? Vs is given as 750 m...
*March 20, 2015 by lina*

**Reading Analogy**

Hey Everyone! I have a quick question! I'm doing this reading packet and you have to find out the relationship between the two words... Insect:termite would that be classification? or something else?
*April 14, 2009 by Hello!*

**For George**

At 11:37 and at 12:24 you posted the same question the earlier one was answered correctly by drwls by accepting your question the way you typed it. my solution is based on the assumption that your denominator was e^(t-7), an invalid assumption.
*September 11, 2008 by Reiny*

**Math(Geometry)**

To Lauren - Ms. Sue, Monday, September 28, 2009 at 10:24pm What post? What is your question? In addition, your "name" can not be HELP ME NOW!!!! No one appreciates being screamed at to help you now! Using all caps online is like screaming at us. To Lauren - HELP ME NOW!!!!, ...
*September 28, 2009 by Mr.Sonyericson*

**hey got a question here**

hey if dy/dx= -2 why is it wrong to say that y is alwats decreasing at a rate of -2? I dont really get it. It is better to say that y is always decreasing with a slope of -2 on a graph of y(x), or at a rate of -2 per change in x. Saying that a rate is a number does not say ...
*December 7, 2006 by David Lee*

**socials**

Question:Hey I posting for my brother Mohammad again, his computer not work I not know why. You please unblock any people so he access again. His question. What goals of the FLQ. Me him not know if list goal one by one. We only have to achieve Quebec independence by resorting...
*December 14, 2011 by Shreya*

**Algebra 2**

Hey, I have another question. this I just don't understand. I'm really starting to get very confused!!! PLEASE HELP!!!!! Solve each equation by factoring. Check your answers. 3x^2+45=24x
*November 13, 2014 by Taylor*

**math**

hey u there its kelsey kelsey. If you have a homework question, post it for help. We dont allow chat here, sorry.
*April 30, 2007 by amanda*

**math**

hey everyone, i have a question, by looking at a particular graph, how will you estimate the amount that is asked in a problem? (e.i. revenue, profit, stocks, etc) Do you just guess or something? thank you!
*February 10, 2011 by anonymous*

**math**

6a^2+4a+5+3a^2+7a-2 That is the same thing as 9a^2+11a+3, but what is the question? You have just written an algebraic expression, not an equation to be solved. assuming you are required to factorise the equation and the expression give by drwls it factorises to (9a+3)(a+1) ...
*January 26, 2007 by chucke*

**sciencie**

hey i have a question what are the two requirements of mater and can matter exist at 0 kelvin yes, matter exists at 0 K, it's just really cold.
*March 25, 2007 by josh*

**physics**

Good job "Drwls", your answer to my bowling ball question worked. Way to go!
*March 17, 2010 by norm*

**Physics check**

A speeder traveling at 41 m/s passes a motorcycle policeman at rest at the side of the road. The policeman accelerates at 3.3 m/s2. To the nearest tenth of a second how long does it take the policeman to catch the speeder? Im sorry I am new to physics this is my first year and...
*July 13, 2010 by Me*

**physics-bobpursley/drwls please check**

bobpursley/ drwls please help me with my post on Sunday, April 15 at 10:16pm and 10:19pm. Thanks!
*April 16, 2007 by Mary*

**Math**

if x is an even number, what is the quotient of the next greater even number divided by the next greater odd number? i have no idea where to even start with this problem. i would really appriciate some help. Thanks! What can make me studdy harder? hey tabby you put your ...
*February 25, 2007 by Marie*

**Math**

What is the value of y if x = -3? y = 1 = 2(x-5) Plug in -3 for x, in the equation for y, and see what you get. I think you copied the problem wrong. Is the first = sign supposed to be a + or - sign? If not, you have already stated that y = 1. That cannot be true when x = -3. ...
*June 29, 2007 by Ruby*

**ATTN: DRWLS RE: PHYSICS**

pete and john play a game of tug f war on a frictionless icy curface. pete weighs 539 N and john weights 392 N. during the course of the game, john accelerates toward pete at a rate of 3 m/s^2 a)what's the magnitude of the force that peter exerts on john? b)what's the ...
*January 23, 2010 by samir*

**physics **

DRWLS: PLEASE SEE ADDITIONAL INFO AT THE BOTTOM its the second part of the question that I don't understand: according the graph shown, the net force acting on an object varies wth the object's displacement. Calculate the work down by the force on the object at the various ...
*January 30, 2010 by Sarah N H*

**Math**

Hey I forgot how to do this certain question: 2(3x-8)+7=x+3-4x
*September 6, 2007 by Allison*

**chemistry**

Hey, I was just struggling with a question that I need to figure out to help me with my next lab, so if any of you guys could help me that would be greatly appreciated. Question: write a balanced equation for the reaction between H2O2 and acidified MnO4-
*March 4, 2013 by alex*

**Algebra-drwls please check!**

Posted by Megan on Tuesday, October 12, 2010 at 3:44pm. I have a question if someone could help, please explain it. Given b = -1 and h = -1, what is the equation of the graph if the parent function is y = sqrt (x) Answers: a.y = sqrt(x-1) b.y = sqrt (-x+1) c.y = - sqrt (-x-1) ...
*October 12, 2010 by Megan*

**One for drwls**

Thank you for answering my question. Can you steer me to making a quadratic from 1/4(x+3)^2-4 Then I can get the intercepts. Thanks Just multiply it out to put it in the standard form, ax^2 + b^2 + c (1/4)(x+3)^2-4 = (1/4)(x^2 + 6x + 9) -4 = (1/4)x^2 + (3/2)x - 7/4 You're a ...
*March 21, 2007 by charlie*

**Physics**

Hey can someone help me out? I only have 1 attempt left on this question and do not understand it at all!!! A 3.5 kg balloon is filled with helium ( density = 0.179 kg/m^3). If the balloon is a sphere with a radius of 5.2m , what is the maximum weight it can lift?
*December 3, 2009 by Tommy*

**very complicated maths**

Hey guys, need some help with a question ive been stuck on for a looooooong time! The question is: Given that (x+4) is a factor of the expression 3x^3+x^2+px+24, find the constant value of p. Hence factorise and solve the equation 3x^3+x^2+px+24=0 Any ideas??????
*November 21, 2012 by Nikki Clark*

**History**

Hey, I have an essay question: Compare and contrast the views of Thomas Jefferson and Alexander Hamilton on the Constitution, National Bank, and Foreign Affairs. I have already researched this topic but I don't think I have enough sources. If you know of any sites that could ...
*January 8, 2007 by Kinda needs help*

**English**

Hey, Any ideas on how to make your own fairytale? I've already started but all i have is a couple of random paragraphss. I wasnted to make it instead of a happily ever after the hero leaves the heroin, but i want them to both have a strong love. And I don't have any love ...
*March 20, 2010 by Me*

**algebra**

thanks drwls i have the correct answer thanks again :)
*May 6, 2010 by kiddo*

**Inverse of log function**

Find the inverse of f(x) = log(2+x) - 4 the base is "a" Call f(x) y y = loga(2+x) -4 y+4 = loga(2+x) a^(y+4) = 2 + x x = a^(y+4) - 2 drwls, you have merely solved the equation for x. The question was to find the "inverse", so the actual answer should be y = a^(x+4) - 2
*March 1, 2007 by Jen*

**DRWLS,MATH,ALGEBRA**

Drawls, How did you get 2h. and then the 2a/h from.Can you help me understand it when you get a chance. Directions: Solve each literal equation for the indicated variable. A=1/2h(B+b) (For b) Area of a trapezoid For Further Reading math,algebra - drwls, Monday, December 18, ...
*December 18, 2006 by jasmine20*

**physics - last question**

Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...
*January 16, 2010 by Sarah N H*

**english**

Hey everybody:) Question:How can I as a future teacher help my students to practice how to use language?
*December 7, 2008 by jane*

**Math (pre-calculus)**

Hey! I have a domain and range question! I don't remember how to get these, can you help? How do you calculate the domain and range of these? What's the domain and range of each? a. f(x)= 1/x=3 b. g(x)= [square root of] (x+6) c. h(x)= x^3+2x+5 Thanks for help!:)
*November 2, 2008 by Angellove*

**To: drwls**

Can you please have a moment to look at my other science post which you helped me on, thanks
*February 8, 2010 by Sara*

**URGENT! Last calculus question!**

Hey! So, I was wondering if someone could answer this. I am mad studying for my exam and I still have a few questions left that I just don't have time to answer, and the assignment is due tomorrow. Thanks and here is the question: Use calculus and algebraic methods to do a ...
*July 29, 2008 by Derek*

**physics**

Hey thanks for the help: I have another question: A swimmer is capable of swimming 0.30 m/s in still water. (a) If she aims her body directly across a 75 m-wide river whose current is 0.55 m/s, how far downstream (from a point opposite her starting point) will she land? (b) ...
*October 6, 2008 by H.Pales*

**physics - another question**

Sam is sitting in her fishing boat watching a trout swim below the surface. She guesses the apparent depth of the trout at 2.0m. She estimates that her eyes are about 1.0 m above the water's surface, and that the angle at which she's observing the trout is 45 degrees. b) ...
*January 16, 2010 by Sarah N H*

**Physics to drwls question to answer given earlier**

A 0.700-kg ball is on the end of a rope that is 0.90 m in length. The ball and rope are attached to a pole and the entire apparatus, including the pole, rotates about the pole's symmetry axis. The rope makes an angle of 70.0° with respect to the vertical as shown. What is the ...
*February 17, 2012 by Angelina*

**inverse function question**

Hey, I'm having trouble fully understanding absolute value graphs and I've been asked find the largest value of a so that f^-1 exists for the function: f: (-efinity,a) --> R where f(x)= logel2x-1l *note: i have used 'l' to represent the straight line indicating the it is an...
*November 8, 2007 by elle*

**drwls + Ms Sue geog yr 8**

thanks so much to both of you for finding the websites they have helped alot.:)
*March 13, 2009 by misha*

**Chemistry**

Hey, can you help me on this question: Question: A 2.3 kg iron object is placed in an oxygenated tank of 1.00 mol/L hydrochloric acid. What volume of hydrochloric acid would react to completely consume the iron object? My question: when I seperate the H and Cl, and make the ...
*July 17, 2006 by Dave*

**chemistry**

Hey, can someone explain this question to me? Can we consider air as an ideal gas law? If not, why? If so, under what condition?
*October 3, 2008 by Mel*

**Science **

hey there can someone please help me answer the question - Explain the advantages and disadvantages of DNA mutating Thankyou
*September 21, 2009 by Jason *

**physics**

What can we conclude from the attractive nature of the force between a positively charged rod and an object? 1. The object has no net charge. 2. Cannot be determined. 3. The object does not have an appreciable negative charge. 4. The object does not have an appreciable ...
*February 20, 2010 by Anonymous*

**business- opinion question**

Hey. I don't really have an opinion on this, so just seeing what everyone else thinks. Do you think the United States should trade with China or other countries with a poor human rights record? Thanks!!! I'm ok with using economic policies as a tool to achieve international ...
*September 20, 2006 by Anonymous*

**science**

The speed of light in a prticular ype of glass is 1.68x10^8 m/s. What is the index of refraction of the glass? I don't understand if how to solve this problem. Do you put an index of refraction of glass that you know or are you solveing for glass that you don't know? index=...
*November 27, 2006 by Zuri*

**computers **

Hey mathmate is it posible to make the computer read my powerpoint presentation and thanks again for answering my other question
*September 26, 2009 by Nathan*

**physics**

i posted this question before however i did not understand drwls explanation. anybody else want to try ? Sam tosses a ball horizontally off a footbridge at 3.1 m/s. How much time passes after he releases it until its speed doubles?
*December 21, 2010 by tj*

**Economics.**

I need help with these question! What are three main goals sought by policymakers in the economy? Also, I have to write an essay on ways the government can effect the economy. Which is the way that provides the most impact on the economy and why. ^I need sources of information...
*April 30, 2007 by Kasey*

**english**

Hey Guys! It's confused english here! I was wondering if you could answer this question. In this sentence - what would rubbish be used as? A noun, verb, or adjective? Sue Ellen was talking rubbish when she told people about the story. Please answer this question! Thank you!
*January 28, 2009 by confused english*

**Science**

Hey I need the answer by tommorrow so can you plzzzzzzz help? Well my question is... Is the space pen still around in the markets?? Thank you soooooooooooooooooooo much if you can help. :)
*October 22, 2008 by Aimee*

**reading/math**

Hey Mrs.sue, can you answer this question:How does the author establish the setting in the first chapters of the watsons go to Birmingham?
*May 18, 2013 by Austin*

**bobpursley, drwls. ms. sue Writeacher**

When a second post is made to a question, the most recent is now at the bottom. Do any of you prefer the way it was, or do you like this better? I prefer to have the answers shown in the order they were posted. The second answer may clarify or add information to the first post...
*June 16, 2005 by Lance*

**One for Drwls (calc)**

Sorry, you're so quick, I took one of your answers for another question! Finally, Therefore, given my scenario, I could use the integral to calculate the area under the curve described by the derivative? Charlie.
*September 15, 2007 by charlie*

**Physics**

0.75 mol of argon gas is admitted to an evacuated 40 cm^{3} container at 40 C. The gas then undergoes an isochoric heating to a temperature of 500 C. Before I forgot to write the question...so the question is What is the final pressure of the gas? * physics - drwls, Friday, ...
*December 12, 2009 by Ana*

**US History**

I'm doing a song about Italian Immigration from the 1800's for a project nd I'm kind of stuck. Can someone help me out? What I have is this: Hey fratello, wish me luck Hey sorella, I’m awestruck Hey there Nonno, I’m earning bucks In the land of bountiful America With a job~, ...
*November 24, 2010 by Alex*

**US History**

I'm doing a song about Italian Immigration from the 1800's for a project nd I'm kind of stuck. Can someone help me out? What I have is this: Hey fratello, wish me luck Hey sorella, I’m awestruck Hey there Nonno, I’m earning bucks In the land of bountiful America With a job~, ...
*November 28, 2010 by Alex*

**Chemistry**

drwls, if you are there, I got an answer of 42.5 Kelvin, so then that means it is a negative number if converted to degrees Celsius? Question: The heat capacity of a bomb calorimeter is 87.5 kJ/K (this value is for the total heat capacity including that of the water jacket ...
*December 12, 2007 by Anne*

**physics: BOB or DRWLS follow up question**

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?
*November 21, 2007 by beckii*

**Physics**

A vertical spring with a spring constant of 450 N/m is mounted on the floor. From directly above the spring, which is unstrained, a 0.30 kg block is dropped from rest. It collides with and sticks to the spring, which is compressed by 3.0 cm in bringing the block to a momentary...
*April 6, 2007 by Mary*

**For DrBob**

Hey DrBob, I posted an answer to you question on my lab report just to let you know what the y= and r^2 is
*November 17, 2007 by Suzy*

**Easy maths question**

Hey How do I convert 1224.78m squared into mm squared?
*May 8, 2011 by Tina*

**Maths**

Hey :) I'm sitting my maths non-calculator GCSE tomorrow and am currently revising. I'm doing a practise paper and am currently stuck on this question: Express A in terms of w. 3w + 20 A -------- = -------- 200 A + 12 -- What does the question mean? -- Can you explain to me ...
*May 17, 2009 by Sarah*

**english**

Hey, as you know I'm German, but I love this clappping game (Hanky Panky). Down by the banks of the Hanky Panky Where the bullfrogs jump from bank to banky Where the eeps, ops, sodapops Hey Mr. Lilypad and went kerplop Is there any meaning? I am not able to translate it..
*May 13, 2013 by Minnie*

**You tell me:-)**

Hey, this is a simple question my teacher asked us all students today infront of the class and no one got it right. I'd like to know what the importance of sustainability is?
*July 7, 2010 by Rebecca*

**Science - reproduction**

Hey. Well ummm I have a very awkward question. You see, Me and my best friend were just thinking about what it would be like to be a snake. Then we talked about it. And talked and talked. And eventually we started talking about snake doing... Umm... You know what... And we ...
*April 15, 2013 by AngelWolfAssassin*

**Maths**

Can pls someone explain me this ? Thank you The Browns’ gross monthly income is $2900. They have 12 remaining payments of $410 on a new car. What maximum monthly payment does the bank’s loan officer feel that the Browns can afford? For Further Reading Maths - drwls, Wednesday...
*March 19, 2008 by Mike*

**Science....**

Look at my previous post.... Can anyone please answer my science question??? well what's the question? http://www.sinauer.com/cooper/4e/chapter10.html Well, did u look at my previous post??? Hey Lance!! Thanx sooo much!! I got the problem right! I owe u one! Hey Lance!! Thanx ...
*February 22, 2007 by jk1115*

**chemistry 12**

hey i was wondering, i have this question: Sketch a pH curve for the titration of 40.00mL of 0.100 M hydrazine, H2NNH2, having a K of 3.0x10^-6 by 0.100 M HCIO4 i know you can t sketch but could you tell me what to do with the "K of 3.0x10^-6" i could sketch the curve without ...
*July 17, 2012 by dan*

**History**

Hey, I need to Stretch this Question into about Half a Page, Now .. , Any answers on this Question, To either help me get my Report done, Or someone to actually do it for me would be appreciated. Q. The Twenty first century, Will never see the Rise of an Evil dictator such as ...
*August 3, 2008 by Anonymous*

**Site not working correctly/Physics**

I posted a question a couple of days ago which was answered by DRWLS - thank you. Unfortunately I am unable to read the guidance provided as the typing is obscured by the adverts down the right hand side of the page. Look forward to replies. Thanks Mike
*December 7, 2011 by Mike*

**Physics**

Two 0.09g pith balls are suspended from the same point by threads 40cm long. (Pith is a light insulating material once used to make helmets worn in tropical climates.) When the balls are given equal charges, they come to rest 19 cm apart What is the magnitude of the charge on ...
*January 25, 2010 by Lanise*

**government **

hey i need help in this question Is there ever a time where american citizens disagreed with the way the government is handling things in the past?
*October 3, 2011 by sara *

**BRAINMATH**

Hey, there is a challenge question online. So I decided to ask how to do it. If 2 is subtracted from twice a number, the result is 50. Thennn, What is the number? Thanks, Regards, BrainFreeze
*October 24, 2014 by brain MATH*

**science**

Chemistry Hey guys, i have a question about how to figure out how much mass of a compound i need to find 130ppm here is the question. What mass of Fe(NH4)2(SO4)2*6H2O is required to prepare 2.25 L of a 130 ppm iron solution? Now i know that ppm is (mg of desired compound)/(kg ...
*November 16, 2013 by John*

**urgent**

hey you guys I post a question like five hours ago and I would like to know if there is at least a website in were I could get help or something Post your question again. That way it'll get to the top of the list. That's what I always do. Your original post listed several ...
*February 4, 2007 by desperate*

**bio+ please check!!!**

The following statement describes, in random order, events during the transmission of a nerve impulse. Use them to answer the next \g question(s). Event 1: Positive ions flow into the neuron. Event 2: The resting potential of the cell membrane is restored. Event 3: The cell ...
*February 21, 2007 by Anonymous*

**MaTH Question**

Write an equation for the problem & solve. There are 500 cm of trim to frame a banner. The banner is 22cm wide. How long can it be? Thanks you so much 500 x 22 = 11000 ( this gives you area) Then multiply 11000 by 2 because there are 2 sides of length. hey...i had a similar ...
*November 24, 2006 by Aubrey*

**Algebra**

Hey, I was wondering if anyone could possibly restate a math question for me? Here it is : Decribe the pattern relating values of those variables and the way that the relationship is shown in the table and the graph.
*August 23, 2012 by EmilyMay*

**Chemistry ppm**

Hey guys, i have a question about how to figure out how much mass of a compound i need to find 130ppm here is the question. What mass of Fe(NH4)2(SO4)2*6H2O is required to prepare 2.25 L of a 130 ppm iron solution? Now i know that ppm is (mg of desired compoun)/(kg of solvent ...
*November 16, 2013 by John*

**DRWLS**

cAN YOU LOOK AT THE PREVIOUS POST. i am completely lost towards that equation...how do i even solve it because then i would have to cross multiply or cancel and that will give me zero.
*February 25, 2007 by jas20*

**Physics Drwls**

I was wanting help with my physics post and since no one replied I thought there wasn't a physics tutor on Jiskha, but came back on today cause I really need to get a hang of my physics stuff and luckily seen you Drwls. A bike rider approachea a hill with a speed of 8.5m/s. ...
*November 22, 2011 by Fizzylicous*