Friday
September 19, 2014

Posts by christine


Total # Posts: 430

government
who solves the disputes over issues in congress? the correspondence committe, the committee of conference, or the core committee.
February 5, 2009

Science
What are ten scientific facts found in Jurassic park? Include page numbers for reference.
January 9, 2009

business
what are the consequences if payroll information is not entered precisely?
December 8, 2008

uite rate
unit rate of 250 miles in 4hrs
December 4, 2008

s.s
Did the Constitution resolve the weaknesses in the Articles of Confederation?
December 4, 2008

s.s
What was the debate between North and South over counting slave populations?
December 4, 2008

college chemistry
How much heat is needed to melt 50.0g of ice at 0 degree celcius and then heat the water to 25 degree celcius?
November 2, 2008

physics!
vf2=v02+2ax then solve for vf the vf would then be used as v0 for the 2nd half of the projectile. then you use the same equation to solve for vf.
October 19, 2008

algebra, equations
y=mx+b slope is m y intercept is b so in this problem the slope is -2/3 the y intercept is -12
October 19, 2008

phys
A long distance swimmer is able to swim through still water at 4km/hr. She wishes to swim from Port Angeles, WA due north to Victoria, B.C., a distance of 50km. An ocean current flows through the Strait of Juan de Fuca from west to east at 3km/hr. In what direction should she ...
October 19, 2008

Federal court system
The role of the federal court system is to?
October 6, 2008

world history
I am a 10th grader and I need to know how to write an essay for world history. I don't get it. Could you email me a sample essay so that I know where things go, such as conclusion, etc.
September 25, 2008

chemistry
How much heat in kilojoules is required to warm 10.0 of ice, initially at -10.0, to steam at 120. The heat capacity of ice is 2.09 and that of steam is 1.84 .
September 7, 2008

Ethnic Diversity
I'm very confused with this question and check point•According to current (within the past two years) research and news reports, what are some of the changes the United States has made to policies concerning the treatment of Muslim and Arabic members of society?
September 2, 2008

Ethnic Diversity
I'm very confused with this question and check point
September 2, 2008

reading
Why isnt an ant suture not a good idea?
August 20, 2008

Statistics
Does the null hypothesis for a nondirectional alternative hypothesis differ from the null hypothesis for a directional alternative hypothesis? Explain. I have no idea how to state the answer for this.
May 24, 2008

Nursing education
I disagree with you bob, many Master's prepared nurses make less money than those who have ADN's. Since I am an ADN nurse who is now one class short of a BSN, I think I know who makes the most money. If you are a hospital nurse with good differentials and base pay ...
May 20, 2008

Stats
Thanks, I think that is very good. I will add that to my answer.
May 20, 2008

Stats
Why is it important to know the possible errors we might make when rejecting or failing to reject the null hypothesis?
May 20, 2008

health care
A doctor needs to sit down, ask open ended questions (not ones that can be answered with a yes or a no) spend enough time with the patient to allow him/her to ask questions and often times it is best to have the patient repeat back the instructions so as to assess the ...
May 20, 2008

how to write a check
No need to write the word "dollars" as it is usually on the check already.
May 19, 2008

chemistry homework
In the preparation of sulfuric acid, sulfur dioxide must be catalytically oxidized to sulfur trioxide. How much oxygen must be available to convert 50.0 L of sulfur dioxide according to this process?
May 15, 2008

Statistics
A student is taking a multiple-choice exam with 16 questions. Each question has five alternatives. If the student guesses on 12 of the questions, what is the probability she will guess at least 8 correct? Assume all of the alternatives are equally likely for each question on ...
May 14, 2008

general question
Ok this is probably a stupid question but a hospital pharmacist works at a hospital right?
May 13, 2008

HIPPA
To answer why, it is used to protect consumers from others obtaining information that is not for public information.
May 12, 2008

statistics--clarification please
I thought I was understanding this but I am really not sure about the symbols. Does the 3*(13/20)^2*(7/20) translate to 3 times 13/20 times 2 times 7/20? Sorry I am not up on the symbols... I will keep trying.
May 11, 2008

statistics
That is even more confusing. I am totally lost on this problem. I know that I have to multiply the three possibilities, so (7/20)(7/20)(13/20) three times (same numbers, different order) and I get 0.07963. I thought I would add those three numbers or essentially multiply that ...
May 11, 2008

statistics
I thought I was understanding this but I am really not sure about the symbols. Does the 3*(13/20)^2*(7/20) translate to 3 times 13/20 times 2 times 7/20? Sorry I am not up on the symbols... I will keep trying.
May 11, 2008

statistics
you have 8 blue marbles, 7 red marbles, and 5 green marbles. What is the probability of obtaining at least 2 red marbles in three draws with replacements? I have the answer, just can't figure out how to get it. Thanks!
May 11, 2008

calculus
solve the following differential equation: y' + (y)tanh(x) - 2e^x = 0
May 7, 2008

english
If you have Microsoft 2007 you can try copying and pasteing the speech into the word document. Then click the review tab, then the translator tab next to the spelling and grammar checker under the thesaurus tab,then select which language to which language, and then press the ...
May 4, 2008

engl - citing
Is this individual someone you know personally? If it is someone you know personally you can just put what she said in quotations and not worry about citing what she said. You do not need to cite that type of information. On the other hand, if you recieved the information from...
May 4, 2008

Eth 125
Sam, I am currently in my eigth week of this class. This was my response to the discussion question. I hope this answer helps you. The ones that are most difficult to overcome are health care, housing, criminal justice, and education. These four societal challenges are ...
May 4, 2008

research writing
Use sources provided by the university library, your local library, peer- reviewed articles, and sites ending with gov and/or org. Wikipedia is useful but the information needs to be double- checked and researched. Some instructors will not all information from wikipedia ...
May 4, 2008

crit thinking
Guzy, I just finished that course in October. The whole point of the class is for you to think critically. I know the assignment was a bit of pain but without learning to think critically on your own, the rest of your upcoming classes will become difficult if you cannot.Best ...
May 4, 2008

math
8(5-n)=2n
May 4, 2008

jj pearce
8(5-n)=2n
May 4, 2008

SCI
Should we eliminate fats from our diets altogether and increase proteins? 2. What are some of the benefits that unsaturated fats provide when included in a balanced diet.
April 21, 2008

statistics
What is the median in the following set of values? 4, 7, 19, 22, 27, 39, 47
April 2, 2008

health
the office hires an employee who's deaf, but who can lip read. what will the employer have to do in terms of this employee's job duties to comply with the americans with disabilities act?
March 11, 2008

statistics
Can you tell me the z score for the following numbers? 10, 12, 16, 18, 19, 21. Thanks, I am getting the wrong answer each time I do it.
March 3, 2008

music
how can i write really good song lyrics? i suck at writing! can someone help or better yet, give me a verse to work with? thnaks
February 19, 2008

Statistics
When calculating percentiles, ie the 33rd percentile, do you use the lower limit of the group that contains the 33rd percentile? as in this case: 70-79 11 46 80.7 60-69 9 35 61.4 50-59 8 26 45.61 40-49 7 18 31.58 Would you use the number 49.5??
February 12, 2008

Math
thanx
February 7, 2008

Math
Radius of the circle: ((X-4)^2)+((y+2)^2)-81=0
February 7, 2008

Math
What is the vertical asymptote of the function: f(x)= (X+5)/((X^2)-12X+36)
February 7, 2008

Physics
A fisherman notices that his boat is moving up and down periodically, owing to waves on the surface of the water. It takes 2.90 s for the boat to travel from its highest point to its lowest, a total distance of 0.640 m. The fisherman sees that the wave crests are spaced 7.60 m...
November 20, 2007

Physics Problem
The portion of string between the bridge and upper end of the fingerboard (the part of the string that is free to vibrate) of a certain musical instrument is 60.0 cm long [.6m] and has a mass of 2.23 g [.00223kg]. The string sounds an A4 note (440 Hz) when played. Where must ...
November 19, 2007

chemistry
im given the refractive index values of two - isobutyl bromide (1.3785) and isobutyl chloride (2.4368). the solution's refractive index is 1.3931. determine the molar composition (%). im not sure how to get the concentrations of Br and Cl. i have this so far- 100 * 1.3931...
November 8, 2007

ochem lab
this deals with TLC chromatography: if 2 compounds have same Rf under identical conditions, does it show that they have identical structures? i think it does. but im not sure why. thanks mucho.
November 2, 2007

Science
What processes must a stone undergo if it is to be made ready for use in jewelry?
October 21, 2007

Science
I need help writing a procedure for my Earth Science class. Our teacher gave us 5 minerals and told us 5 mineral names, but we have to figure out which is which. We could do tests like specific gravity, luster, streak, and hardness. I decided to do hardness and streak. I wrote...
October 14, 2007

social studies
the early bstone age people had to learn to adapt to their what?
August 28, 2007

Math
yes
August 28, 2007

Written communication
How can I re-write this sentence? Each advisor was contacted by his students. Assignment: Inclusive Language:Making Language Nonsexist http://www.jiskha.com/search/search.cgi?query=Each+advisor+was+contacted+by+his+students All advisors were contacted by their students.
August 3, 2007

Accounting1 - ethical issue
Discount Hardware Wishes to expand its business and has borrowed $200,000 from the Toronto Dominion Bank. As a condition for making this loan, the bank required discount hardware to maintain a current ratio of atleast 1.50 and a debt ratio of no more than 0.50, and to submit ...
August 1, 2007

Accounting1 - ethical issue
Gorries Bearing Company makes all sales of industrial bearings under terms of FOB shipping point. The Company usually receives orders for sales approximately one week before shipping inventories to customers. For orders received late in december Bob Gorries, the owner, decides...
August 1, 2007

Accounting1 - ethical issue
On a recent trip to Brazil, Carlo degas, sales manager of cyber systems, took his along for a vacation and included her airfare and meals on his expense report, which he submitted for reimbursement. Chelsea Brindley, vice president of sales and Degas boss thought his total ...
August 1, 2007

Accounting
John Sullivan owns appartments buildings in Nova Scotia, New Brunswick, and Quebec. Each property has a manager who collects rent, arranges for reparis, and runs advertisements in the local newpaper. the property managers transfer cash to Sullivan monthly and prepare their own...
August 1, 2007

dilution
a 46.2 mL, .568 M calcium nitrate soln is mixed w/ 80.5 mL of 1.396 M calcium nitrate soln. whats the concentration of final soln? mols 1 + mols 2 = total mols mols/volume in L = M OH! thanks! i got the right answer, 1.09 M.
July 18, 2007

chem 2
what is the mass of F in grams in 24.6 grams of SnF2? Convert 24.6 g SnF2 to mols SnF2. Convert mols SnF2 to mols F atoms. Convert mols F atoms to grams F atoms. 24.6 g SnF2*(1 mol SnF2/molar mass SnF2)*(2 mols F/1 mol SnF2)*(atomic mass F/1 mol F Atoms) = ?? Check my thinking...
July 16, 2007

chem
how many grams of sulfur are needed to react w/ 246 grams of mercury to form HgS? Hg + S ==> HgS unless your instructor insists on writing S as S8, in which case it will be 8Hg + S8 ==> 8HgS. The answer will be the same no matter which way the equation is written. I ...
July 16, 2007

Geography
1) What is the relationship between an ecozones GDP and area? 2) What is the relationship between an ecozones GDP AND population? ..please help. I thank you in advance. These sites have information that should help you. http://canadianbiodiversity.mcgill.ca/english/ecozones/...
May 23, 2007

pH
im trying to calculate the pH of a 1.0L soln containing 53.8 g of completely dissociated Mg(CN)2. is this the diss. equation? Mg(CN)2 + water --> MgOH + 2CN^- i dont think i did the problem rite b/c i got 15.7 for the pH. i got 53.8M Mg(CN)2 for the initial conc. or i think...
May 18, 2007

balanced equation
? MnO4– + ?H+ + ?C2O42– --> ?Mn2+ + ?H2O + ?CO2 what's the balanced equation? correct coefficients? is it 1MnO4- + 2H+ + 1C2O42- --> 1Mn2+ + 1H20 + 2CO2 ? c2042..? are you missing parenthesis somewhere? oh i see, no i believe this is correct: MnO4- + 8h+ + ...
April 29, 2007

chemistry
Write a net ionic equation for the reaction of the aqueous species ammonia and hydrofluoric acid. I don't think mine is coming out right- I don't know how NH3 reacts with other species, because I end up getting hydrogen as both an anion and a cation in the same species...
April 29, 2007

chemistry
How many electrons are transferred in the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water? i'm not sure if iposted this already... sorry if i did :) Fe^+2 ==> Fe^+3 + e 2e + 2H^+ + H2O2 ==> 2H2O Multiply equation 1...
April 22, 2007

oxidation
In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is... ? Fe(II) ==> Fe(III) H2O2 ==> H2O. Fe goes from +2 to +3, that is a loss of electrons, so it is oxidized (by definition, oxidation is ...
April 19, 2007

pH- from saturday
i posted this question previously and got help however im still having some confusion. can u clarify ? what's the pH of the acid HC2H3O2 with concentration of .15? Bob Pursley worked that problem for you and gave it as [x^2/0.15] = Ka. What is it you don't understand? ...
April 15, 2007

pH- really hard one
What is the pH of the solution created by combining 1.00 mL of the 0.10 M NaOH(aq) with 8.00 mL of the 0.10 M HCl(aq)? with 8.00 mL of the 0.10 M HC2H3O2(aq)? NaOH + HCl ==> NaCl + H2O So all the NaOH is neutralized leaving NaCl, which will not affect the pH either way, ...
April 15, 2007

pH- part 2
how much .10M Base (in mL) is needed to neutralize 8.00mL of .10M Acid? base- NaOH, acid- HCl, base volume (mL)- ? base- NaOH, acid- HC2H3O2, base volume (mL)- ? VaNa=VbNb Vb= 8ml*.10N/.10N= 8m.
April 14, 2007

pH
what's the pH of the acid HCl with concentration of .15? the acid HC2H3O2 with concentration of .15? I figured out the pH of HCl, but I'm still not sure how to find the other one... What is the dissociation constant for acetic acid? K= [H+][ace-]/.15 pH= -log sqrt (.15...
April 14, 2007

equilibrium constant
find eq constant at 910K. CCl4 (g)--> <--CCl4(l) given: Gf CCl4(g)= -53.7 Gf CCl4(l)= -68.6 G Products - G reactants = Delta G. Delta G = -RT ln Keq
April 12, 2007

English/Grammar/Appositives
Are the commas a correctly placed? 1. The term hardware refers to the computing equipment, itself. 2. The year, 1975, marked the arrival of the microcomputer Neither of those sentences needs any commas. =) Can u give me 3 examples of similies, metaphors and personification in ...
April 10, 2007

equilibrium III
what's Kp if Cl2CO was found to be 7.46% decomposed at 395'C when initial pressure is 7.60atm. Cl2CO --> <-- CO + Cl2 Initial p = 7.60 atm. 7.46% decomposed. (CO) = 7.60*0.0746 = ?? (Cl2) = same ((Cl2CO) = 7.60*(0.9254) = ?? Kp = pCO*pCl2/pCl2CO Post your work if...
April 10, 2007

equilbrium II
when CO2 (.15mol) and H2 (.302g) in a 500L vessel at 576'C are allowed to come to equilibrium the mixture contains .000183 mol/L of H20. what is the equilibrium concentration of CO? CO2 + H2 --> <-- CO +H2O The equilibrium concentration of H2O = the equilibrium ...
April 10, 2007

equilibrium
when Br2 (5.7mol) and Cl2 (.0934mol/L)in a 61 L vessel at 604'C are allowed to come to equlibrium the mixture contains .0523 mol/L of BrCl. What concentration of Cl2 is reacted? - i know how to find the Kc... Br2 + Cl2 ==> 2BrCl 0.0523 mol/L BrCl at equilibrium in a 61 ...
April 10, 2007

molarity
calculate the molarity of k+ in a soln prepared by adding .2L of .200M K3PO4 and 75.0mL of .5M K3PO4. assume volumes are additive. A few of steps here and more than one way to answer the problem You need to calculate the total number of moles of K3PO4 from the two volumes and ...
April 5, 2007

equilibrium concentration
A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be ? M. Wouldn't that be 0.002 x 1/11 = ??
April 4, 2007

equilibrium
The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.510. If a trial's absorbance is measured to be 0.250 and its initial concentration of SCN– was 0.00050 M, the equilibrium ...
April 4, 2007

chemistry
A student performed the freezing point depression experiment according to directions but mistakenly recorded the mass of lauric acid as 8.300g instead of8.003g. The calculated molar mass of the unknown acid will be GREATER/LESS than true value b/c mass of lauric acid appears ...
April 3, 2007

chemistry/ molarity, molality
A solution is made by mixing 20.0 mL of C6H5CH3, d=.867g/mL, with 140.0mL of C6H6, d=.874g/mL. assuming that the volumes add upon mixing, what is the molarity? what is the molality? i know that molarity= moles/L and molality= moles sol/kg solvent... but im not sure which ...
April 3, 2007

Micro Economics
Briefly explain the following: (a)Economic cost and accounting cost. (b)Free market economy and mixed economy. (c)Marginal utility theory and indifference curves analysis. Please note that we don't do students' homework for them. Once YOU have come up with a response ...
March 23, 2007

Mass Communication
what is meant by persuasive communication?Explain breifly I've clicked through a few and have only seen what seem to be a lot of homework questions. But I have not understood what your confusion is on many of them. Do you now understand what they are asking? The act of ...
March 23, 2007

Mass Communication
The act of communication is best understood as one that has social implications.Explain briefly Please note that we don't do students' homework for them. Once YOU have come up with a response to YOUR questions, please re-post and let us know what you think. Then ...
March 23, 2007

Spanish
I wrote a story for my Spanish class; could someone please proof-read part of it for me? Thanks! Ella se cae, arrodillada sobre la orilla. Es donde ellos tuvieron sus primero encuentra. Llorando, ella se depila los pétalos de una flor. Ella gota los pétalos en el...
February 27, 2007

calc.- trig substitution
s- integral s 1/ [ (x^4) sq.rt(x^2+9)] i know x=3tanx sq.rt(x^2+9)= 3 secx dx= 3/[cos^2(x)] so far i know: = 1/ (3tan^4(x)) 3secx cos^2(x)) dx =1/ 81 [ (sin^4 (x)/cos^4 (x)) (1/cosx) (cos^2(x))] then i'm not really sure what to do next
February 26, 2007

chemistry
if a structural isomer has an OH attached, i don't understand why it's unlikely that it'll be a liquid at room temperature. I think, I'm not sure, but because both O and H are gases I can think of many alcohols that are liquid at room temperature.
February 25, 2007

trig integration
i'm having trouble evaluating the integral at pi/2 and 0. i know: s (at pi/2 and 0) sin^2 (2x)dx= s 1/2[1-cos(2x)]dx= s 1/2(x-sin(4x))dx= (x/2)- 1/8[sin (4x)] i dont understand how you get pi/4 You made a few mistakes, check again. But you don't need to do any ...
February 18, 2007

trig integration
s- integral endpoints are 0 and pi/2 i need to find the integral of sin^2 (2x) dx. i know that the answer is pi/4, but im not sure how to get to it. i know: s sin^2(2x)dx= 1/2 [1-cos (4x)] dx, but then i'm confused. The indefinite integral of (1/2) [1-cos (4x)] is (x/2...
February 18, 2007

chemistry- absorbance & transmittance
An unknown was prepared with the concentration of 0.000120 M. A Beer's Law plot was prepared using the absorbance values from standard solutions of ASA and a line drawn through all the points passed through the origin with a slope of 1750.0 M–1. The expected ...
February 16, 2007

molarity
An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of the solution was ...
February 16, 2007

US History - to Ms. Sue
First of all, thank you SO much for clarifying my question! It is part of an overall essay topic that I can't figure out how to answer: Compare and contrast the methods used by late nineteenth century corporations to control competition - especially the pool, trust, ...
February 11, 2007

US History
What was so bad about pools in the late 1800's? I understand what they were but they were banned by the government in the Interstate Commerce Act and I don't understand why they were so harmful? How did they give more money to railroad companies? I'M SO CONFUSED. ...
February 11, 2007

Hess' law
Which of the following is the best definition of Hess' Law? A. Heat is always released by the decomposition of 1 mole of a compound into its constitute elements. B. Since enthalpy is a state function, it will be different if a reaction takes place in one step or a series ...
February 9, 2007

critical thinking
what is the rhetorical device for: What is the difference between "sugar free" and "no sugar added"? sugar free means no sugar at all and non sugar added means it has natural sugar nd they don't add any extra bob do you know what the rhetorical device ...
February 8, 2007

Chemistry - Rate Determining Step
The rate law for the reaction 2NO (g) + Cl2 (g) -> 2NOCl (g) is given by rate = k[NO][Cl2] A mechanism involving the following steps has been proposed for the reaction: NO (g) + Cl2 (g) -> NOCl2 (g) NOCl2 (g) + NO (g) -> 2NOCl (g) If this mechanism is correct, what ...
February 6, 2007

math
You inherit $18750 but the conditions are that for teh first year, the money must be invested in two stocks paying 10% and 11% interest, respectively. How much should be inbested at each rate if teh total interest to be earned for teh year at $1962.51? Be sure to specify what ...
February 6, 2007

Economics
In order to answer the question, the theory of consumer behavior must be examined. Utility is the satisfaction or pleasure a consumer gets from the consumption of a good or service (all-you-can-eat buffet) and total utility is the total amount of satisfaction derived from the ...
February 4, 2007

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