Thursday

September 18, 2014

September 18, 2014

Total # Posts: 216

**science**

I don't think there is an answer for that????
*March 18, 2011*

**Algebra**

I'm needing help with this. Thanks An individual can be classified by gender as male, female, by hair color as black, blonde, brown, red, unknown, and by eye color as black, brown, green. A) How many different classifications are possible (for example, female, with unknown...
*February 1, 2011*

**geometry**

Given Isosceles trapezoid ABCD. AB = 3x - 4 and CD = x + 12. Find AB. Isosceles trapezoid A B C D is drawn. 2 8 16 20
*December 15, 2010*

**Algebra**

An operation is commutative if you can change the order of the numbers involved without changing the result. Addition and multiplication are both commutative. Subtraction is not commutative: 2 - 1 is not equal to 1 - 2. So my question is what’s the difference between 2 - ...
*December 12, 2010*

**physics**

Before a collision, a 28 kg object is moving at +13 m/s. Find the impulse
*December 11, 2010*

**6th grade**

if the ratio is 3:2 and length is 5 inches.what is the widith
*December 10, 2010*

**Math**

Three large barrels are transported on a railroad car by stacking the third one on top of the other two and using a tight metal band around all three to hold them together. If the outside diameter of each barrel is 3 feet, then what is the length of the metal band?
*November 22, 2010*

**Business Math**

A company purchased an air conditioning system for $10,200. Shipping charges on the system are $875. Setup costs were $1,250. The system is expected to last for 5yrs and has a residual value at $2000. If I use the straight-line method to calculate depreciation for this air ...
*November 2, 2010*

**english**

I would then choose... The airplane was wrecked by the wind.
*October 24, 2010*

**english**

4. Which of the following sentences contains “passive voice?” (Points : 1) The airplane was wrecked by the wind. The wind wrecked the airplane. The cat chased the mouse. The bird flew after the balloon. a, b, c
*October 24, 2010*

**calculus**

Using a graphing utility, graph and approximate the zeros and their multiplicity. A.x=0,multiplicity 2;x=7,multiplicity 3 B. x=0,multiplicity 2; x=7,multiplicity 1; x=-7, multiplicity 2 C. x=0,multiplicity 3;x=0,multiplicity 2 D.x=0,multiplicity 3;x=-7, multiplicity 2 E.x=0,...
*September 20, 2010*

**N/A**

I'm just needing a question to be ask: If you were head of health informaton management department at a hosptial later an FBI agent came to you with a search warrant and place it in your hand. And he ask to speak with you about the hopital's health records. How should ...
*May 20, 2010*

**Legal and Ethical Aspects of Health Information **

Describe the theories that could support a lawsuit under these circumstances: A surgeon performs elective surgery on a patient. The patient later complains to the surgeon about the pains resulting from the surgery. The surgeon dismisses his complaints an not credible and ...
*May 8, 2010*

**Biology**

A friend tells you that because he has just recovered from a cold, he now cannot get the flu. Is your friend right? Explain your answer.
*May 5, 2010*

**Biology**

In many cases, not all of Koch's postulates can be applied to determine the cause of a human disease. Explain why.
*May 4, 2010*

**Legal and Ethical Aspects of Health Information **

Write a 200 word paper on the three executive offices which most frequently affect the Health Information profession. What do they mean by three executive offices which most frequently affect the Health Information profession. I do not understand can you help me. Thank you
*April 25, 2010*

**chemistry**

at what temperature does 16.3 g of nitrogen gas have a pressure of 1.25 atm in a 25.0 - L tank?
*April 12, 2010*

**chemistry**

an air bubble is released at the bottom of a lake where the temperature is 4 celsius and the pressure is 3.40 atm. if the bubble was 10.0 ml to start, what well its volume be at the surface, where the water temperature is 12 celsius and the pressure is 103 kpa?
*April 12, 2010*

**Read**

yes decripit means old, run down, dlapidated, etc...
*April 5, 2010*

**algebra**

child is now 3 years old - dad opens account with $10,000 it earns 4.5% annual intrest. a) construct formula (A(t)=Ao(a)^t) b) how much money will be in account when he is 10 years old c) if dad wants account to grow to 100,000 when he is 18 then what should original amount to be
*April 5, 2010*

**algebra **

a quanity increases by 6.50% every 3 months. by what percent does it increase.. one month?? one year??
*April 5, 2010*

**algebra**

exponential formula (y=c(a)^x) fill in blanks x y 0 ? 5 40 9 1200 15 ?
*April 5, 2010*

**algebra**

a given graph pases through points (18,25) and (19,100) a) compute delta x b) assume graph is linear and find slope c) assume its exponential and find growth factor
*April 5, 2010*

**Chem**

I know that is a diprotic acid and you do ICE and compare with each Ka value but I am not sure if I am setting it up the right way or doing the correct thing.
*April 1, 2010*

**Chem**

What is the PH of 0.0100M H2SO4?
*April 1, 2010*

**Chem**

so it would be Q<K so it would shift from left to right
*March 24, 2010*

**Chem**

Which direction will the following reaction in a 5.0 L flask proceed if Qp = 0.013? 2H2O(g) = 2H2(g) + O2(g) Kp = 1.6 x 10-5 Choose one answer. a. to the right because Q > Kp b. to the left because Q > Kp c. to the right because Q < Kp d. to the left because Q < Kp...
*March 24, 2010*

**Chem**

Kc=[HI]^2/[H2][I2] 54=(2x-0.3)^2/[X][X] THEN I GET: 54=4X-0.09/[X]^2 SO SQAURE ROOT IT THEN I GET 7.348*(x-x) =2X-0.3 7.4348X-7.348X=2X-0.3 tHEN i GET STUCK BECAUSE i DONT KNWO IF THE VARIABLES x-x is suppose to be here? because when I calculate my answers dont add up to any ...
*March 23, 2010*

**Chem**

Kc=[HI]^2/[H2][I2] 54=(2x-0.3)^2/[X][X] THEN I GET: 54=4X-0.09/[X]^2 SO SQAURE ROOT IT THEN I GET 7.348*(x-x) =2X-0.3 7.4348X-7.348X=2X-0.3 tHEN i GET STUCK BECAUSE i DONT KNWO IF THE VARIABLES x-x is suppose to be here? because when I calculate my answers dont add up to any ...
*March 23, 2010*

**Chem**

I have a question on this question would I forgo the sqaure root on this on because there is no sqaure except on the products side which is 2HI? I am lost because I set up ICE then got to: 54=(4X-0.09)^2/x*x Kc=[HI]^2/[x][x] At a particular temperature, Kc = 54 for the ...
*March 23, 2010*

**Chem**

I CALCULATED IT OUT TO Q = 1.80*10^3 SO IT WAS A RIGHT SHIFT FORWARD BC Q<K meaning that substances on left react to form substances on the left to reach eq... SO I GOT B as the answer IS THAT CORRECT????
*March 22, 2010*

**Chem**

A mixture is prepared with [CO] = 0.035, [Cl2] = 0.015, and [COCl2] = 0.95. It is known that Kc for the equilibrium is 1.2 x 10-3 at 400OC. Predict what will happen. Choose one answer. a. The reaction is at equilibrium so no net reaction occurs. b. The reaction occurs in the ...
*March 22, 2010*

**Chem**

At a particular temperature, Kc = 54 for the reaction H2(g) + I2 (g) <=> 2 HI(g). One mole of HI is placed in a 3.0-L container. What would be the equilibrium concentration of HI?
*March 22, 2010*

**Chem**

H2 + I2 = 2HI I 1.0/5.0 1.0/5.0 0 C -x -x 2x E 0.2-x 0.2-x 2x 54= [HI]^2/[H2]*[I] 54=2x^2/(0.2-x)(0.2-x) need to solve for x then would I take square root of both sides to get rid of the squares? Then I get stuck at 7.348= 4x/0.2-x I dont know where else to go from here and ...
*March 22, 2010*

**Chem**

At a particular temperature, Kc = 54 for the reaction If 1.0 mole of H2 and 1.0 mole of I2 are placed in a 5.0 L container, what would be the equilibrium concentration of HI?
*March 22, 2010*

**chemistry**

The molarity of urea in a solution prepared by dissolving 16 g of urea (MW 60.0g/mol) in 39 g of H2O is ______M. The density of the solution is 1.3 g/ml.
*March 9, 2010*

**chemistry**

A solution is prepared by dissolving 15.0 g of NH3 in 250.g of water. The density of the resulting solution is 0.974 g/ml. The mole fraction of NH3 in the solution is?
*March 5, 2010*

**math**

if given ..,. y=4x^-4 if x triples what happens to y?
*February 22, 2010*

**math**

if given y=6x^4 if x doubles what happens tp y?
*February 22, 2010*

**college**

its a "hookes law" spring when its stretched
*February 22, 2010*

**6th grade**

why did the romans add volcanos to the fire that vulcan (roman god) can control
*February 18, 2010*

**chemistry **

A colloid is the dividing line between solutions and heterogenous mixtures. What is the exact particle size of a colloid compared to the exact particle size of a solution. A. over 1000nm compared to 0.1-1nm B. 1-1000nm compared to 0.01-1nm C. 0.10-1nm compared to 1-1000nm D. ...
*February 13, 2010*

**Chemistry**

Which of the solutions has the greatest osmotic pressure? Choose one answer. a. 10.0 g glucose in 1.00 L at 298 K b. 10.0 g glucose in 1.00 L at 303 K c. 10.0 g glucose in 0.500 L at 298 K d. 5.0 g glucose in 1.00 L at 298 K
*February 11, 2010*

**Chemistry**

I got it its 950 g
*February 10, 2010*

**Chemistry**

how would I find the mass of something from the molality..... How many grams of water should be added to 25.0 g of NaCl to produce a 0.450 m solution?
*February 10, 2010*

**chemistry **

How many grams of water should be added to 25.0 g of NaCl to produce a 0.450 m solution?
*February 10, 2010*

**Chemistry**

A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution? Choose one answer. a. 56.1 b. 43.9 c. 37.0 d. 58.8 When we calculated yesterday the answer was not B. 43.9....I got it wrong and dont know why if the math was correct and I followed ...
*February 10, 2010*

**Chemistry**

3.10g/ml *1mole Br/79.0g =0.039 mol/ml 0.039mol/ml * 2.00ml =0.0784 mol 1.05 g/ml * 1mol/60g = 0.0175 mol/ml * 125 ml =2.18 mole I dont know where I am going wrong becaus ethe answers are not same????????
*February 10, 2010*

**Chemistry**

What is the molality of a solution prepared by dissolving 2.00 mL of bromine (d = 3.103 g/mL) in 125 mL acelic acid, HC2H3O2 (d = 1.05 g/mL) Choose one answer. a. 0.301 b. 0.335 c. 0.296 d. 0.593
*February 10, 2010*

**chemistry **

I thought it was b. solid dissolves in the solution because in dynamic equil I thought that the excess ionic solute pass thru the solution continuously as htdrated ions are deposited on surface of solute So the solid I though would dissolve in solution and add to solution.
*February 10, 2010*

**chemistry **

Which of the following is not true in a dynamic equillibrium describing a saturated solution? Choose one answer. a. solid crystalizes from solution b. solid dissolves in the solution c. concentration of dissolved solute remain constant d. rate of dissolving is double the rate ...
*February 10, 2010*

**Chemistry**

Calculate the molality of methanol in a solution prepared by dissolving 75.0 mL of methanol, CH3OH (d = 0.791 g/mL), in 150 g of ethanol, C2H5OH.
*February 10, 2010*

**Chemistry**

What is the mass percentage of 55.0 g of KCl in 125 g of water?
*February 10, 2010*

**Chemistry**

still not making sense because answers are a. 30.0 b. 35.3 c. 15.0 d. 28.9
*February 10, 2010*

**Chemistry**

200. g of a solvent is available, how many grams of a solute should be weighed out to make a 15.0% solution by mass?
*February 10, 2010*

**chemistry **

Calculate the molarity of a solution containing 40.0 g glucose (C6H12O6) in enough ethanol (C2H5OH) to make 40.0 mL of solution.
*February 10, 2010*

**chemistry **

A 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, C6H6. The freezing point of the solution is 4.53 oC. Calculate the molar mass of the substance. The normal freezing point for benzene is 5.53 oC and Kf is 5.12 oC/m.
*February 9, 2010*

**chemistry**

A 0.750 g sample of an unknown substance is dissolved in 20.0 g of benzene, C6H6. The freezing point of the solution is 4.53 oC. Calculate the molar mass of the substance. The normal freezing point for benzene is 5.53 oC and Kf is 5.12 oC/m.
*February 9, 2010*

**Chemistry**

From the following: 1) pure water 2) 0.01 m solution of table sugar (C12H22O11) 3) 0.01 m solution of NaCl 4) 0.01 m solution of CaCl2 Choose the one with the largest van't Hoff factor and hence the lowest freezing point.
*February 9, 2010*

**CHM**

From the following: 1) pure water 2) 0.01 m solution of table sugar (C12H22O11) 3) 0.01 m solution of NaCl 4) 0.01 m solution of CaCl2 Choose the one with the largest van't Hoff factor and hence the lowest freezing point.
*February 9, 2010*

**chemistry **

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution
*February 9, 2010*

**Chemistry**

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution
*February 9, 2010*

**Chemistry**

Thanks so much I just found this site and it is helping me more than ever...
*February 9, 2010*

**Chemistry**

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution?
*February 9, 2010*

**chemistry**

thanks it was correct!
*February 9, 2010*

**chemistry**

A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution?
*February 9, 2010*

**economics**

According to the “guns and butter” example, if a country decides to spend more on military goods, which of the following will happen?
*January 11, 2010*

**economics**

the calculation of GDP would include?
*January 11, 2010*

**Health Information Technology**

Thank You Writeacher
*December 12, 2009*

**Health Information Technology**

I need help with this problem I can not figure this out I had came up with five different answers and I really would like to get the correct answer. Memorial Hospital currently has 1,850 linear filing inches used. It is projected that over the next 5 to 8 years an additional ...
*December 12, 2009*

**ecology**

what is the type of ecological relationship that can involve either memebers of the same or different species and in which both participants are harmed?
*December 9, 2009*

**Economics**

Which of the following is NOT a reason for unequal income distribution? education location discrimination size of family I want to say location, but I'm not 100% sure
*September 20, 2009*

**math**

-2.378 is it a rational or irrational
*September 2, 2009*

**math**

Thanks MathMate, boy looks like i was way off. thanks for the help cc
*August 22, 2009*

**math**

how many rectangles are there on a chess board? i've tried twice and got 168 is this right? my friend said i'm way short. any help would be much appreciated. thank you
*August 22, 2009*

**SCI 275**

Atmospheric Issues
*July 22, 2009*

**SCI 275**

The Population Size explain the four factors that produce changes in population size. Which factors are affecting the population size in the video? What do you predict will happen to the nutria population ater all the land is depleted of the nutrias' food resource?
*July 13, 2009*

**Algebra 1: 8th Grade**

Thats funny...im in 7th grade and im in algebra 1...anyway...why do u need help with this??? its simple exponents and division...
*April 28, 2009*

**Physics**

Thanks. This is what I thought but again the answer in my book was incorrect. So frustrating.
*April 1, 2009*

**Physics**

If the co-efficient of static friction for a 5 kg rubber block is 0.3 how much more force is required to lift the block than to start it sliding? I worked out force to get it sliding is 14.7 N (5*9.8*.3) but not sure about the upward force to lift it.
*April 1, 2009*

**Physics**

Yes, that's my answer too. Incorrect answers at the back of the book drive me crazy! thanks for confirming!
*March 31, 2009*

**Physics**

The co-efficient for static friction for a 5 kg box on a floor is .72. How much force if required to start the box sliding? I worked it as follows: Force of friction=Force normal * co-effic. of friction which is .72*5*9.8=35.28 but answer in back of my book says this is wrong...
*March 31, 2009*

**Algebra**

since you need to solve the system of equations by substitution, solve the first equation for x by subtracting 4y from both sides. You will get x = -5 - 4y. Next substitute this expression into the x of the 2nd equation to get 3(-5 - 4y)- 8y =45 Now use the distributive ...
*February 27, 2009*

**math**

how do you write 2 3/8 as a percentage/
*December 16, 2008*

**Math**

00001, 00011, 00101, ?, 01001 1,3,5,?,9 ? = 00111 This is Binary code converted to decimals
*December 16, 2008*

**FRENCH**

How does one translate "that will be fun" into French? Thank you!
*November 15, 2008*

**history**

US West, Era of Andrew Jackson
*November 11, 2008*

**history**

why did the aristocracy of the West have greater faith in the common man?
*November 11, 2008*

**philosophy**

is the world dominated by money?
*October 20, 2008*

**Math**

-10<-2+8<22
*September 2, 2008*

**sose**

why does farming take alot of water?
*May 22, 2008*

**SCIENCE**

I NEED A HYPOTHESIS A LANDOWNER COULD TEST TO PROVIDE EVIDENCE TO HELP DECIDE WHAT ACTIONS COULD BE TAKEN TO REDUCE EROSION ON A STEEP HILLSIDE?
*April 1, 2008*

**pigskin geography**

well said.
*September 19, 2007*

**8th grade technology**

what are good sites to study for technology final exams? This site may help you. http://www.homewood.k12.al.us/middleschool/staff/whip/8thgradeproftests.htm However, your best preparation is go study your text and your notes and any handouts your teacher has given you.
*June 10, 2007*

**science**

oky i have to make a tornadod simulator but what can i make it out of http://www.facethewind.com/tornsim/tornsim.html has some good suggstions
*March 23, 2007*

**chem.**

if gas is $4.20 a liter, how much will it cost to fill a 14-gallon tank? conversion factor: $4.20L 1.06qt 1gal ______x________x______ 1 1L 4qt i have no clue how to set it up. i'm confused. <font color=blue>nevermind about the problem. good night.</font> You ...
*January 18, 2007*

**random**

what kind of website is this? what is jiskha? Jiskha is the name given to the site by the man who runs the show here. His name is Leo. This is a help site with the emphasis on help. We try to help students do their homework. But we like to see what the student can do, then we ...
*January 18, 2007*

**chemistry**

question: "If gas is $1.20 per gallon, how much would it cost to fill a 50-liter tank?" using conversion factor. 1 L = 1.056 quarts. 4 quarts = 1 gallon. Convert 50 L to gallons and multiply by 1.20/gallon. Let me know if this is sufficient. I think I got it. Thanks.
*January 18, 2007*

**Help!**

I don't know What United States did for genocide of darfur. Please tell me about it too. I know some site, so please give me some comment of that answer.
*January 2, 2007*

**Help**

Tell me how AU, DLF, JEM, SLA, SLM, SPLA and UNSC assist the victims of Genocide of Darfur. Simply answer is fine. So please someone teach me how they were helped geonocide of Darfur. I already got some site. So I just make sure how they did.
*January 2, 2007*

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