Questions Asked on
February 15, 2009

chem
Arsenic acid (H3AsO4) is a triprotic acid with Ka1 = 5 103, Ka2 = 8 108, and Ka3 = 6 1010. Calculate [H+], [OH ], [H3AsO4], [H2AsO4], [HAsO42], and [AsO43] in a 0.20 M arsenic acid solution. i cant do this. i don't even know how to start.
asked by Cab 
Chemistry
Calculate the concentrations of all species present in a 0.33 M solution of ethylammonium chloride (C2H5NH3Cl). Okay so i tried doing HA = H + A ice table regular it doesnt work idk what Ka to use. b/c of the chloride. i have to find [C2H5NH2][H+][OH
asked by Spencer 
Physics
Light that is polarized along the vertical direction is incident on a sheet of polarizing material. Only 94% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. No light passes through the second sheet.
asked by Delli 
Physics
please check these answers for me When an object is moving with uniform circular motion, the centripetal acceleration of the object a. is circular b. is perpendicular to the plane of motion c. is zero d. is directed toward the center of motion D What is
asked by teamjakeward 
Chemistry
At 25°C, K = 0.090 for the following reaction:H2O(g) + Cl2O(g) 2 HOCl(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 1.2 g H2O and 1.6 g Cl2O are mixed in a 1.4 L flask. (b) 1.2 mol pure HOCl is placed
asked by Lindsey 
Physics
calculate the following, expressing the answer in scientific notation with the correct number of significan figures: (8.86 + 1.0 * 10^3) / 3.610 *10^3 2454.57?
asked by y912f 
chemistry
Potassium nitrate has a lattice energy of 163.8 kcal/mol and a heat of hydration of 155.5 kcal/mol. How much potassium nitrate has to dissolve in water to absorb 114 kj of heat?
asked by reese 
Chemistry
A sample of conc. nitric acid has a density of 1.41g/ml and contains 70% HNO3 by mass. What mass of HNO3 is present per L of solution? What is the molarity?
asked by Tree Frog 
Micro Economics
Resources are being used efficiently when 1. scarcity is not longer an issue 2. they are also used equitably 3. every opportunity to make people better off has been utilized 4. there are still gains from trade available
asked by Drake 
College: Chemistry
Hi there, I need help on my homework for chemistry and I do not understand the step on how to work this problem out. Please help me with this problem: On a Sunday morning while having your breakfast you determine that you need about 2.95X10^(5)J to heat
asked by Mai 
chemistry
Use Henry's law to determine the molar solubility of helium at a pressure of 1.5 atm and 25 degrees celsius . this is what I know... Sgas = kH x Pgas so then I plugged in... Sgas = 3.7 x 104 x 1.5 my answer was .055 and it is wrong. could someone please
asked by reese 
Chemistry
NEWW 0.10 M methylamine (CH3NH2) kb= 4.38e4 calc the percent ionization so i did the ICE table to find that x=6.62e3 (that was a typo the first time) and then i divided by .1 and then multiplied by 100. but i got the wrong answer whats did i do wrong?
asked by Spencer 
Chemistry
When 50.0mL of 0.100M NH3 (Kb=1.8x10^5) solution is mixed with 20.0mL of of 0.250M HCl solution, what is the pH after reaction? I solved the ka=5.56x10^10 and I solved the moles of each nHCl and nNH3 and both have 0.005 moles. What do I do after this?
asked by Kearstyn 
chem plzzz help
okay so im doing pre lab questions on reaction rates I have a chart labeled effects of varying concentration in reaction #1 flask A contains 7.50mL of .200 M KI , none of .20M KCI, 5.00 mL of .0050 M S2O3^2, 1 drop of starch. Flask B contains 7.5mL of
asked by Anna 
Statistics
1) A Motor Company has purchased steel parts from a supplier for several years and has found that 10% of the parts must be returned because they are defective. An order of 25 parts is received. What are the mean and standard deviation of the defective
asked by BEARHUG 
college: Chemistry
I need help on this homework problem and I do not understand how to work on it. Please help me with this problem. The photoelectric work function of a metal is the minimum energy needed to eject an electron by irradiating the metal with light. For calcium,
asked by Mai 
Chemistry
When 50.0mL of 0.100M NH3 (Kb=1.8x10^5) solution is mixed with 20.0mL of of 0.250M HCl solution, what is the pH after reaction? I solved the ka=5.56x10^10 and I solved the moles of each nHCl and nNH3 and both have 0.005 moles. What do I do after this?
asked by Kearstyn 
Chemistry
i need help. Calculate the pH of a 0.24 M CoCl3 solution. The Ka value for Co(H2O)63+ is 1.0 105. how do u do these with like the Cl there?
asked by Lindsey 
physics
how do i do this A force of 230 N applied on a hydraulic lift raises an automobile weighing 6500 N. If the applied force is exerted on a 7.0 m^2 piston, what is the area of the piston beneath the automobile? a. 2.0 * 10^2 m^2 b. 4.0 m^2 c. 0.25 m^2 d.
asked by y912f 
Chemistry
Aluminum cookware is reffered ti as "anodized aluminum". The anodizing process puts a layer of aluminum oxide on the aluminum, protecting it from corrosion. Consider the reaction of 10.00 grams of aluminum with 10.00 grams of oxygen to form aluminum oxide.
asked by Stacey 
Spanish
¿Qué piensas? 1. ¿A ti te gusta pasar un rato con los amigos? Sí, me gusta pasar un rato con los amigos. 2. ¿Qué te gusta hacer en el día de activadades con amigos? Me gusta alquilar un DVD. 3. ¿Qué otras actividades te gustan? Tambien me gusta
asked by Larry 
college chemistry
I am having a problem with this problem from my homework. I need some help on this problem. Microwave ovens work by irradiating food with microwave radiation, which is absorbed and converted into heat. Assume radiation with wavelength=15.0cm is used and
asked by shylo 
Physics
i'm really lost here. please show me how to solve this A 0.10 kg piece of copper at an initial temperature of 94 degrees C is dropped into 0.20 kg of water contained in a 0.28 kg aluminum calorimeter. The water and calorimeter are initially at 15 degrees
asked by teamjakeward 
geometry
graph the following 2 graphs  y=2x+3 and y=2x4. a)state the intersections on the y axis and the x axis. b)what is the vertical and horizontal difference between the two graphs? PLEASE help i don't understand? I know how to graph the eqautions but not too
asked by caitlyn maroon 
physics
please tell me if these are correct A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0 deg above the horizontal. What is the magnitude of her horizontal displacement? (Assume no air resistance and that Ay= g = 9.81
asked by y912f 
Writing
I'm writing a story about a girl who loves a boy that barely notices her and her best friend is trying to set them up even though he is in love with her as well. I don't know if i should make the girl fall in love with her crush or her best friend....it's
asked by Sage 
year 8 Geography
In Geography i am learning about the River Tees.for my homework i need to do a project. The questions i need to answer are: Q 1 ) How does the river tees effect the landscape on it`s journey from the source to the mouth? Q 2 )What process takes place in a
asked by Amy 
history
How and why did Europeans perceive the peoples and resources of the New World? How and why did Native Americans perceive the peoples and resources of the Old World?
asked by tracy 
AP Chem
A 0.23 M sodium chlorobenzoate (NaC7H4ClO2) solution has a pH of 8.68. Calculate the pH of a 0.23 M chlorobenzoic acid (HC7H4ClO2) solution
asked by Jake 
Quick Spanish
1. ¿Cómo es Felipe? 2. ¿Son los chicos buenos amigos? ¿Por qué? 3. ¿Cómo son los amigos de tu clase? Please help me translate these questions. Muchas Gracias.
asked by Larry 
physics
I'm confused as how to find the current for a circuit with both parallel and series resistors? R1 = 2 Ù R2 = 5 Ù R3 = 11 Ù R4 = 10 Ù V = 7 V R2 and R4 are parallel, then these are in series with R3, then this whole system is in parallel with R1. I need
asked by c 
chemistry
The pH of a 1.00 103 M solution of pyrrolidine is 10.82. Calculate Kb. i keep getting anumber that is ^ (positive) and that's way to big....
asked by Jennifer 
physics
If sigma(t)^2 denotes the standard deviation in the quantity t^2, show that sigma(t)^2=2tsigma(t) I don't even know where to begin... help plzz
asked by Anna 
English
I am doing my essay on drugs use among teens I need someone one to look at my thesis here is my out line. and i need a introduction and conclusion. Thesis: in today society drug use among teenagers is becoming more crucial for society. Outline for Drug use
asked by Gertrude Sanders 
Algebra 2
I need some help with my radical equations. I would really appreciate some aassistance.
asked by George 
physics
write down the uncertainty in the volume of the cylinder (3.36*10^2) write down the minimum uncertainty with which the volume of the cylinder can be determined (1.79*10^2) it says to compare these values and discuss briefly. I figured out how to find
asked by Anna 
Physicis
Given: Two teams of children are wellmatched, and they pull on the rope with exactly the same force. They have placed a 65n weight at the center of the rope. The teams first pull with 750n of force each, then in an heroic effort to straighten the rope,
asked by Joshua 
Chemistry
How is polonium210 used in antistatic products? Why is its presence in commercial products (eg. antistatic hair brushes) a concern?
asked by Amanda 
10th grade physical science
you are doing a six day tour ofthe coast of south africa. you fly from jhb to cape town in cape town you join a luxury bus tour which takes you via george along the gardens route to p.e then further along the coast to east london ending in durban from
asked by keneilwe 
math
solve the following two equations algebraically. 4x+3y=12 4xy=4 give the coordinates of intersection.
asked by tyler smith 
Posting
I keep trying to post a question about chemistry and the site keeps telling me that there is an error because I am trying to put in a link to a website. This is not true! I tried to contact the website, and put in my question there. Can someone from this
asked by Sadie 
Micro Economics
Economists believe that resources should be used as efficiently as possible to 1. achieve society's goals 2. eliminate scarcity 3. reduce inequity 4. do all of the above
asked by Bigboy2 
math
solve each equation for 0=/
asked by sh 
civics (history)
Miranda v. Arizona case how is the 14th amendment implicated in this case? how did the court go beyond its usual practice in coming to a decision?
asked by coco 
Physics
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.600m^3 and the tension in the cord is 840N . What is the mass of the sphere? And Calculate the buoyant force
asked by Amanda 
Child Care
Disciline refers to behaviors that are A. expected. B. selfregulated. C. harsh D. punitive. my answer is B. CAN YOU TELL ME IF I AM CORRECT
asked by Cindy 
Science/chemistry
Could you please check these answers I don't understand #4 could you give me a link or you can try to help me. Thanks: 1. Identify what all organic compounds have in common, and list the four principal classes of organic compounds. Answer: Cabohydrates,
asked by Gabby 
physics
A hollow plastic sphere is held below the surface of a freshwater lake by a cord anchored to the bottom of the lake. The sphere has a volume of 0.600m^3 and the tension in the cord is 840N . What is the mass of the sphere? is this how i would find the
asked by Amanda 
Chemistry
We are currently studying significant digits/figures. I was asked to add 150 ml with 76.9 ml, plus 209 ml plus 0.036 ml. The book says the answer is 440, but I got 435. (the complete answer, without applying the significant digits rule is 435.936) How did
asked by Coralie 
college math
is the integral of 1/x^2, 2x ln of the absolute value of x^2?
asked by Laura 
accounting
1) StraightLine Method 2) DecliningBalance Method 3) DoubleDecliningBalance Method 4) SumoftheYear's digits Method What are the main characteristics of each method and in what situation would you use each of these methods?
asked by China 
AED
I need help bad with the following Use at least three sources—other than the text for this course—to support your plan. Construct either a 1,050 to 1,400word paper or a 15 to 20slide Microsoft® PowerPoint® presentation (with presenter’s notes),
asked by troyer0269 
french
J'adore = i love J'aime = i like ????????????? Je n'aime pas = I don't like Je déteste = I hate what is a neutral opinion?
asked by valerie 
English
Can someone Please heip me with my Punctuation and make sure this process paragraph makes senes. Thank you! You can learn how to tie a necktie following these steps. To get started, you will need to select a necktie of your choice and stand in front of a
asked by Angie 
math
Solve by elimination method. 0.3x – 0.2y = 4 0.5x + 0.5y = 85/19
asked by Anonymous 
History
Are these true or false: 1. Thoreau argued that the legitimacy of democratic laws demanded obedience and represented a higher law than one's indiviudual philosophies or ethics False? 2. The wave of national uncertainy and secularism in the early 19th
asked by Anna 
careers
Is it true majoring in history is a nontraditional field for women?
asked by Rosalyn 
ecology
Why do organisms with the widest limits of tolerance, for most factors, will be the widest distributed?
asked by ecology 
math/ cal
how do you integrate sin (x^2) dx?
asked by Laura 
Physics
How can you prove that acceleration due to gravity is the same in a resting and moving frame?
asked by Christina AAAA 
Social Studies (Mrs. Sue I redid the 4 paragraphs)
I need someone to check this over thanks. I'm in 9th grade could you please give me a letter grade thanks City Goes Hungry Supporting this article will be very difficult because St. Louisans aren't getting any money from the state lawmakers. But on the
asked by Valentine's Sweetheart 
Chem
Another confusing significant digit problem. I added 36.6 and 2.4, and divided the result by 4.803. The book says the answer is 7.91, but I don'[t see how that could be, since the lowest number of significant digits in the problem is two (2.4). I think the
asked by Coralie 
math/3rd grade
For every 100 cars that enter the entersection from A, 30 cars head towards B, 40 cars head toward C, and 30 cars head towards D. If 60 cars enter the entersection from A, how many head toward B? Explain, thanks
asked by Carol 
Chemistry
2. Calculate the volume for the following object If you know that the object has a mass of 24 grams and the density is 12 g/ml. I tried to get rid of the 24 by multiplying it on both sides, and dividing on both sides, but neither worked. What will then?
asked by Ben 
Biology
Where and how are tree seedlings raised?
asked by Rachel 
Algebra
d) Suppose you want to add a sprinkler system, and the location of one section of the sprinkler line can be described by the equation y= 1/2x 4; this is what I got 4+y= 1/2x4+4; y=4 and 1/2x + 1/2 making x=0 (0,4) is this correct?
asked by A. W. 
science
When the roller coaster is at the top of the loop, why doesn’t the person fall off the roller coaster? What forces are acting on the person when the roller coaster is going round the loop? Is it gravitational force and normal force?
asked by jessie 
algebra
[x+2] [x+2] [x+3] [+p/3] [x3] [x+3] [x+9] [3x+xy2xy][x+2y] [2x5y][3x2xy+7y] [2xy][x+y] [0.590.3b][0.25ab+0.5b]
asked by keneilwe 
Marcoeconomics
According to the formula, Bond price= y/r so bond price has a inverse relationship with interest rate.i.e. interest rate increases, bond price decreases. But why does it contradict with this demandsupply anysis: r(interest rate increases)> returns from
asked by David 
Physics
please check these for me Which of the following is not a fluid? a. carbon dioxide b. hydrogen c. seawater d. wood D Which of the following statements is not correct? a. a fluid flows b. a fluid has a definite shape c. molecules fo a fluid are free to move
asked by teamjakeward 
Algebra
my question is:Suppose you want to add a sprinkler system, and the location of one section of the sprinkler system le can be described by the equation: y= 1/2x 4, this is what I got 4+y= 1/2x  4 +4, 4y= 1/2x 1/2x; y=4 and x=0 making the answer (0,4).
asked by A. W. 
finances
E X E R C I S E S Exercise 11.1 The child and family government benefits seminar was such a success that Advocates for Children will conduct a second seminar in an adjoining community. The executive director decides that this second seminar will attempt to
asked by monique solano 
English
What characters in Lord of the Flies had physical defects? I couldn't think of any, unless you can't being nearsited (Piggy) as a physical defect, or obesity.
asked by Rosalyn 
World History 201
I have a homework assignment due tomorrow consisting of true/false questions. Would someone please review my answers and see if I am correct. Thanks. 1. Although women in ancient India were not priests, they were often chosen to teach the importance of the
asked by Amy 
To: Wendy  college
I've removed your post about a complex business scenario because it presents no idea about how you'd like us to help you. Please repost with your ideas on the solutions and specify specifically where you need our assistance.
asked by Ms. Sue 
Statistics
Using the below information calculate the conditional probability of C given each of the age groups, or P(C/D), P (C/E), etc. Compare these probabilities and speculate as to which age groups seem more likely than others to have been (according to the legal
asked by Stuart 
govt.
How does the great penitentiary rivalry continue to shape and influence american thinking about the prison systems purpose?
asked by lisa 
English
Which one of these sentences uses pronoun correctly? a. Please give Paul and I your undiv ided attention. b. Jacob and me are going to set a meet ing date. c. Carol told Sylvia and he the good news. d. Send the package to Tanya and him.
asked by Tony 
physics
write down the uncertainty in the volume of the cylinder that you calculated in part 4 of the error analysis (i got 3.36*10^2). Also write down the minimum uncertainty with which the volume of the cylinder can be determined. Compare these two values and
asked by Anna 
physics/measurements
how do you compute the uncertainty in the volume of a block?
asked by Anna 
Chemistry
Consider 57.5 mL of a solution of weak acid HA (Ka = 1.00 106), which has a pH of 3.800. What volume of water must be added to make the pH = 6.000?
asked by Brian 
Math
Jerome estimate that the total number of people for the past 2 years visiting the aquarium is 900,000. Gina estimated it to be 870,000. Write a number sentence to show how Jerome found his estimate.
asked by Elecia 
Physics
Calculate the acceleration of a Porsche when he goes from 0 miles/hr to 40 miles/hr in 5.6 seconds. (should I convert 40 miles per hour to miles/second?)
asked by Tammy 
English
I'm trying to come up with a title for my essay and it can't be more than four words? The topic was "war as a social disease". Everything that I come up with is longer than four words? Any ideas on how I can go about this. I hate when their is a limit of
asked by Michele 
Child Care
In order to learn to respect others and devlop healthy relationships, children need to A confront people with different idesa. B. develop strong selfesteem. C. be told what to think. D. learn to gain control over other children. I pick the letter B.
asked by Brenna 
Algebra
How do I write an equivalent expression using radical expressions for this: (a^2b^2)^1/9
asked by Amy 
Quick Spanish
¿Qué peiensas? 1. ¿Tienes pelo castaño? 2. ¿Cómo son tus amigos? Not quite sure what these questions would translate to. Please help.
asked by Larry 
French
Bad thing happened, you may remember my other post about what does La Route du Rhum mean but anyway... I was at the library and got all this information but my time ran out and the computer logged off so I wasn't able to same it. I know wherei got most of
asked by Micheal 
Jiskha in General
Are some of the people on this site teachers? How do they have time to answer our questions? Don't they have to grade papers and such? I'm just curious and grateful that some people are willing to always be on here.
asked by Ben 
government
How a bill becomes a law?
asked by Stacey 
Healthcare
I need some help with find information on what are the implications for patients? What types of reform efforts are being implemented to improve caregiver’s socialization skills? The socializations process of caregivers. Will those reforms efforts be
asked by Nikia walker 
college algebra
Translate to an algebraic expression; the product of 48% and some number; use y to represent some number.
asked by stephen 
theory
I need theories on aptitude...please help me.......
asked by klarmaesen 
To: Carol  economics
I've removed your post about researching nurses salaries. You've given us no idea how much of this complex assignment you've done nor how you'd like us to help you. Please repost when you can supply that information.
asked by Ms. Sue 
math
solve for 0=/
asked by sh 
Writing/ Research
In Katz ( Katz vs Olmstead), why did Douglas write a concurring opinion? what is the basis of his opinion? Do you agree or disagree with the opinion and why?
asked by Ian 
math
A machine is either working (state 1) or not workind (state 2). If it is working one day the probability that it will be broken the next day is 0.1. If it is not working one day the probability that it will be working the next day is 0.8. Let Tn be the
asked by Sally 
10th grade physical science
you are doing a six day tour ofthe coast of south africa. you fly from jhb to cape town in cape town you join a luxury bus tour which takes you via george along the gardens route to p.e then further along the coast to east london ending in durban from
asked by keneilwe 
statistics
The following contingency table of frequencies is based on a five year study of fire fatalities in Maryland. For purposes of clarity, columns and rows are identified by the letters AC and DG respectively. Blood Alcohol Level of Victim Age A B C 0.00%
asked by Stuart 
Math
I need help with this partial fraction problem. Find the indefinite integral of (5x^3+5x^25)/(x^4+X^3). I got 5(log(x+1)+(1/x)(1/(2x^2)).
asked by Sandra 
CALCULUS
show that f(x) = x^21 (x is greater than and equal to 0) and g(x) = root(x1) (x is greater than and equal to 1) are inverse functions. when i try f(g(x)) = x and g(f(x)) = x to show that the two functions are inverses it doesn't work because i am not
asked by joey 
physics
can anyone show me how to do this? A container of gas is at a pressure of 3.7 * 10^5 Pa. how much work is done by the gas if its volume expands by 1.6 m^3? thanks
asked by y912f 
English Literature
How does J.B Priestly encourage the audience to agree with the Inspector’s view that “We are members of one body” as apposed to Mr. Birling’s view that “a man has to make his own way”?
asked by Edna 
grammar
The antecedent in the following sentence is students: Students in online classes have to be organized to keep up with their assignments.
asked by tabby 
math
how do you subtract 101 1/2
asked by mike 
Cultural Diversity
What are the current changes in U.S. policies concerning the treatment of Muslim and Arabic Americans?
asked by Joy 
Cultural Diversity
"According to current research and news reports, what are some of the changes the U.S. has make to policies concerning the treatment of Muslim and Arabic members of society?" Axia College Week 5 syllabus ETH125 I have checked on Google and only finding
asked by Joy 
Cultural Diversity
Thank you Ms.Sue, That's what I thought since I have checked online and come up with nothing new either.
asked by Joy 
Statistics
Using the information presented calculate the following probabilities: Blood Alcohol Level of Victim A B C Age 0.00% 0.010.09% 0.10% D 019 142 7 6 155 E 2039 47 8 41 96 F 4059 29 8 77 114 G 60 over 47 7 35 89 Total 265 30 159 454 A) P(A or D) B) P(B or
asked by Stuart 
government
what is the economic stimulus package and what implications would it have on peopleof this country?
asked by jerson 
college math
how do you integrate (cos^2 x)^4
asked by Laura 
MathFunctions
How would you solve the following equation when x= 6 x=y^25y
asked by Sabrina 
Algebra II
How do I evaluate log base 8 of 4?
asked by Jacob 
gov
are many people happy with the stimulus package
asked by jerson 
math
how do you integrate 30x^2/((x2)(x+3)(x5)) using partial fraction decomposition
asked by Lauren 
math
how do you integrate dx/(x^2*(x^2+4)^1/2)?
asked by Lauren 
History 4th grade
who was Polk?
asked by Lawren 
English Ms. Sue
How does will power not change the orignial conflict "war as a social disease versus nonconformity".
asked by Michele 
9th Grade English
Is this the correct abbreviation for instructor (instr)
asked by Carly 
math
how do you integrate (3x+1)/(x1)x^2 dx?
asked by Laura 
Child Care
One suggested way to foster both prosocial behavior and selfesteem is the use of A. reasoning B. timeout C. verbal aggression D. role modeling I pick the letter A.
asked by Brenna 
Algebra
Solve using the addition principle: 2x+9>x+14, x+99> 14  9, x>5 is this right?
asked by A. W. 
college math
how do you integrate ln(x^2+1)dx?
asked by Laura 
Cultural Diversity
What are current United States changes to policies concerning the treatment of Muslim and Arabic members of society?
asked by Joy 
college math
how should I integrate 1/(x^2 +1)^5
asked by Ann 
gov
is it hopeful that we will come out of this recession
asked by jerson 
finance
How would the following errors affect the account balances and the basic accounting equation, Assets = Liabilities + Owners' Equity? How do the misstatements affect income? o The purchase of a truck is recorded as an expense instead of an asset. o A cash
asked by mary 
Healthcare
I need some help with a list of caregivers perpectives on health.
asked by Nikia walker 
animal biology
What is meant when a cnidarian colony is described as polymorphic? What does it mean when an organism is described as colonial?
asked by Anonymous 
Science
ionic compounds for the following: calcium chloride calcium oxide sodium oxide sodium carbonate aluminium carbonate calcium sulfate sodium nitrate sodium sulfate aluminium oxide aluminium hydroxide
asked by Alpana 
biology
Why are coral reefs generally limited in distribution to shallow marine waters?
asked by Kate 
Political Science
Can you suggest good topic/s for my concept paper in PoliScie? Help me please. Thanks!
asked by Phoenix 
Math
i know the formuula for density is d=m/v. is the formula for mass then m=dv? what about the formula for volume? is that v=m/d?
asked by Lonzy 
Science
As a person moves away from the equator to the poles, his weight increases. Why?
asked by janice 
ENGLISH
What does it mean to vary the sentence pattern within a written work?
asked by NICK