Friday
August 29, 2014

Posts by kate


Total # Posts: 1,680

LOGIC
Oops. In the first set of statements, both statements should read "Mary."
September 10, 2008

LOGIC
I keep getting different answers from different sources on these questions... I'm still not sure. Anyone else who can lend their opinion? #1 I need to know if this is a real or apparent argument. A: I saw Bob with Mary last night. B: You saw Frank, Bob's identical twin...
September 10, 2008

Philosophy - Logic
#1 I'm having trouble understanding why you say it is not a real arguement. Person A is stating that he saw Bob and person B is saying that person A really saw Frank. How is it possible for the two statements to both be true and thus inconsistent? #2. Can't person A ...
September 10, 2008

Philosophy - Logic
I have a few logic questions that I am having difficult with and would be greatful for any insight... #1 I need to know if this is a real or apparent argument. A: I saw Bob with Mary last night. B: You saw Frank, Bob's identical twin, with Marsha last night. I'm ...
September 10, 2008

Math/Calculus
Find k so that the following function is continuous on any interval: f(x)= kx 0 (less than or equal to) x (less than) 2 3x^2 2 (less than or equal to x) i know the answer is 12 but i don't know how to arrive at that. could you please walk me through the steps? thanks.
September 9, 2008

HELP! MATH
cold yam is put into a hot oven, the temperature of the yam begins to rise. The rate R in degrees per minute at which the temperature rises is governed by Newton's Law of Heating, which says that the rate is proportional to the temperature different between the yam and the...
September 7, 2008

Math
A cold yam is put into a hot oven, the temperature of the yam begins to rise. The rate R in degrees per minute at which the temperature rises is governed by Newton's Law of Heating, which says that the rate is proportional to the temperature different between the yam and ...
September 7, 2008

Calculus
A cold yam is put into a hot oven, the temperature of the yam begins to rise. The rate R in degrees per minute at which the temperature rises is governed by Newton's Law of Heating, which says that the rate is proportional to the temperature different between the yam and ...
September 7, 2008

French
1. j'ai un ordinateur. 2. vous n'avez pas de chaise. forms of avoir j'ai tu as il/elle a nous avons vous avez elles/ils ont
September 7, 2008

earth science
how does radioactive decay provide heat energy within the earth
July 19, 2008

Algebra
A guy wire reaches from the top of a 24 ft. pole to a point on the ground 8 ft. from the pole. Find the length of the wire.
June 18, 2008

geometry
i didn't understand the concept of symmetry in maths ? what is its use in the field of mathematics? what is tha aplication of symmetry of symmetry in various fields. somevdy please answer
June 14, 2008

Spanish 2
Write correct preterite forms of the verbs ir and estar to complete conversatin. Claudia y yo ______a comprar sellos; _______ en el correo por quince minutos. Elías _________ a cobrar un cheque; ______ en el banco por veinte minutos. Irene y Marcos ______ a comprar unos...
June 13, 2008

civics
what amendment number restricts the president in regards to treason, bribes, and being impeached?
May 27, 2008

Italian
How do you say "twin town" in Italain. I know its "Une ville jumelle" in french. A.s.a.p X
May 26, 2008

science
How is sickle cell anemia maintained in our world (why doesn't it eradicate itself)?
May 25, 2008

science
can someone help me answer this question? How is the sickle anemia gene maintained (why doesn't it destroy itself)?
May 25, 2008

science
I dont understand what this question is asking (what does it mean by physiology) Explain the physiology of sickle cell anemia.
May 24, 2008

french
Ok thank-you! I also have a question: I said the address was 34, rue.... and that still is the address. Should I use the imparfait for that or is it o.k.? Nous sommes allées au Musée des Tissus et des Arts Décoratifs à onze heures. L’adresse a...
May 23, 2008

french
CAn someone proof read this? Nous sommes allées au Musée des Tissus et des Arts Décoratifs à onze heures. L’adresse a été 34, rue de la Charité, Lyon, France 69002. Nous avons vu des textiles du dix-huitième si&...
May 23, 2008

english
nevermind
May 22, 2008

english
how can i use the word caustic in a sentence that relates to the book "A Separate Peace"
May 22, 2008

science
I do not understand this question. I tried to answer it but I am completely at a loss. Can someone help? Describe how the number of antibodies produced and time it takes to produce such antibodies differs between first time exposures and all subsequent exposures.
May 20, 2008

Pre-Algebra
I am having problems with graphing inequalities how do you do them for example x + y < 3 or x> -2
May 18, 2008

Organic Chemistry
I just wanted to get these checked. I think 1 is b, 2 is a, 3 is d, 4 is c, 5 is e and 6 is a
May 13, 2008

Organic Chemistry
I got some multiple choice questions to practice and I'm not sure of how to get the answers... 1). Which of the following corresponds to the COC bond angle in dimethyl ether?-94 degrees, 110degrees, 180 degrees, 122 degrees, or 60 (i think it's 110 2). classify the ...
May 13, 2008

chemistry
Yup! Thank you!
May 12, 2008

chemistry
I'm reviewing for a test tomorrow, and I was wondering about this question. Convert 55 mi/gal to meters/liter. I'm not sure how to go about it, though when I tried it I got 89000.0m/4L. But, I'm not sure if that is right.
May 12, 2008

chemistry
Okay, good. I think I'm all set then. Thank you!
May 7, 2008

chemistry
I was thinking that if, for example, two different pressures were given, two different volumes were given, two different temperatures were given and only one mole, then you use P1V1/n1T1...etc to find the missing mole. But, if only one pressure, one volume, and one temperature...
May 7, 2008

chemistry
I know how to use the equations pv=nrt and P1xV1/n1xT1 = P2xV2/n2xT2, but I don't understand when to use them. I have a test tomorrow and I'm going over some word problems, but I can't figure out how decide which formula you need to use. Is there a specific way to ...
May 7, 2008

Chemistry -- to Dr.Bob I need your help!!!
how do you do this
May 6, 2008

history, and your opinion
The songs Lift Every Voice and Sing and America the Beautiful both have religious refernces in the first stanza. Our current national anthem, The Star Spangled Banner does not. Traditonally only the first stanza is sung at baseball games and events. I need to come up with ...
May 5, 2008

Chemistry
So, for KCl, using the graph... T.....mass KCl/100 mL 10....30 20....32 or 33 30....35 40....38 50....41 60....44 70....46 80....49 90....52 or 53 100...56
May 5, 2008

Chemistry
In the question above this one it says refer to a solubility chart, but my professor never taught us how to answer these questions while using a solubility chart so I have no idea what to do. I've tried going to his office hours for help, but he's only there when I ...
May 5, 2008

Chemistry
How many grams of KCl can you dissolve in 50. g of water at 70 degrees C?
May 5, 2008

Chemistry
Thank you, I made the change. My professor is very precise, so I'm glad you noticed that!
May 2, 2008

Chemistry
mols HCl = 0.750 M x 0.025 L = 0.0186 mol M = 0.0186 mol/0.500 L = 0.0372 the answer is 0.0372 mol/l
May 2, 2008

Chemistry
What is the concentration of a solution prepared by diluting 25.0 mL of HCl 0.750 mol/L to a final volume of 500. mL?
May 2, 2008

Advanced Math
Find the values of x for which the equation sin x = -1 is true 2 pi n pi/2 + 2 pi n pi + 2 pi n 3 pi/2 +2 pi n Can someone please help. I dont understand how to do this.
May 1, 2008

chemistry
If A is a non-polar chemical and B is a non-polar solvent, what type of solubility (high or low) would you expect between A and B? --Is it high solubility?
April 29, 2008

Chemistry
So, if I convert mmHg to atm I get .904 atm. When I plug that into the equation, the final answer is 67.1 L?
April 22, 2008

Chemistry
Okay... 1) 275 g NaCl ----> 4.71 mol NaCl 2) Next, 4.71 mol NaCl * 1Cl2/2 NaCl = 2.36 mol Cl 3) V= nRT/P v= (2.36 mol)(0.0821 L atm/K Mol)(313K)/687mmHg = 0.0883 L Final answer: v = 0.0883 L
April 22, 2008

Chemistry
Sodium reacts with chlorine gas according to the reaction:\ 2 Na (s) + Cl2 (g) ---> 2 NaCl (s) What volume of chlorine gas, measured at 687 mmHg and 313 K, is required to form 275 g of NaCl?
April 22, 2008

Chemistry
Is this correct? (755 mmHg)(400.0cm^3)/298 K = (P2)(50.0cm^3)/(358 k)
April 21, 2008

Chemistry
If a gas has a volume of 400.0 cm cubed at a pressure of 755 mmHg and a temperature of 25 degrees celsius, what would be its pressure (in atm) at 85 degrees celsius if the volume is reduced to 50.0 cm cubed?
April 21, 2008

Chemistry
A tank contains 0.450 kg of oxygen(O2) compressed into a volume of 2.32 L. Estimate the gas pressure (in atm) inside the tank at 5 degrees celsius. Do I convert 0.450 kg from grams to moles, and if I do, do I use the molar mass of oxygen?
April 19, 2008

Chemistry
Convert 125000 Pa to psi
April 18, 2008

chemistry
A tank contains 0.450 kg of oxygen(O2) compressed into a volume of 2.32 L. Estimate the gas pressure (in atm) inside the tank at 5 degrees celsius.
April 17, 2008

chemistry
1) Convert 0.525 atm to kPa 2) Convert 125000 Pa to psi
April 17, 2008

Chemistry
I'm having a hard time figuring these out. Please help me on them! For the reaction Fe2O3 + 3 Co = 2 Fe + 3 CO2: a) how many moles of Fe can be produced from 75 moles Co? b) how many moles of CO2 can be produced from 15 moles of Fe2O3? c) what is the maximum amount (in ...
April 9, 2008

english
what are values and attitudes?
April 3, 2008

Chemistry
Hydrogren, a possible future fuel, can also be obtained from other compounds such as ethanol. Ethanol can be made from the fermentation of crops, such as corn. How much hydrogen in grams can be obtained from 1.0 kg of ethanol (C2H5OH)?
April 1, 2008

Chemistry
The rock in a lead ore deposit contains 84% PbS by mass. How many kilograms of the rock must be processed to obtain 1.0 kg of Pb?
April 1, 2008

chemistry
How many butane molecules are present in a sample that contains 5.0 moles of butane? (Butane- C4H10) What would be the mass of 75 moles of butane?
March 26, 2008

Math
Use the counting principle to determine the number of different arrangements of bicycles that are possible.
March 25, 2008

Math
Two balls are to be selected without replacement from a bag containing one red, one blue, one green, one yellow, and one black ball. How many points are there in the sample space?
March 25, 2008

Math
Why is ounces abbreviated with oz.?
March 19, 2008

SCIENCE
HOW MANY PEOPLE DOES IT TAKE TO BUILD A GREEN ROOF?
March 14, 2008

chem
what do the coefficents in a balanced equation mean?
March 12, 2008

chemistry
I have two questions. 1. How do I predict the formula of ionic compounds when one is a polyatomic ion? Example: Al (+3) and SO4(-2). 2. How would I obtain the charge of Hg in the formula HgCl2?
March 7, 2008

chemistry
72.4/97.82*100?
March 7, 2008

chemistry
Determine the percent yield for the reaction between 98.7g of Sb2S3 and excess oxygen gas if 72.4g Sb4O6 is recovered along with an unknown amount of sulfur dioxide gas.
March 7, 2008

Writing
I need a sentence with the words "loose" and "folklore"? Help?
March 3, 2008

advanced algebra
we are working with logarithms and i dont understand them at all! I get the basic content but then it gets a little more advanced, and I get completely confused. There's one in particular that I have NO idea how to do. Help please?! Simplify: 3 ^ [log(base 9)2 + log(base 9...
February 24, 2008

chemistry
Classify each of the following mixtures as homogeneous or heterogeneous: 1. Shampoo 2. Vegetable Oil
February 19, 2008

math
The top of a 15-foot ladder is 3 ft. father up a wall than the foot of the ladder is from the bottom of the wall. How far is the foot of the ladder from the bottom of the wall?
February 17, 2008

french
faites deux phrases avec chacun de ces verbes au passe compose,au future proche et au future simple
February 16, 2008

accounting
External users are existing or potential investors, creditors, analysts, financial advisers, regulatory authorities, unions, and the general public.
February 15, 2008

chemistry
A backpacker carries 2.5 L of white gas as fuel for her stove. How many pounds does the fuel add to her load? Assume the density of white gas to be 0.79 g/cm^3.
February 14, 2008

English
I do believe that yes, the answer is A.
February 12, 2008

grade 11 math
expand/explain? how did you get -1? the answer is positive, not negative. hmm..
February 12, 2008

grade 11 math
x/6-5=1/2x+1/3x-4 AHH! help. i need step-by-step. all i know is that the answer is x=1.5 Thanks!
February 12, 2008

precalc
the graph of a cubic function has a local min at (5,-3) and a point of symmetry at (0,4). At what point does a local maximum occur? i don't quite know how to figure this one out, any help?
February 11, 2008

research paper
I am writing a research paper. The corrlation between interest rates and credit card usage. I cant find many websites on this do you know of any?
January 31, 2008

pre calc
solve each inequality: (x-4)(x-2)^2(x-3)^2 < 0
January 28, 2008

lit( essay)
its a great story. its not an essay.
January 28, 2008

pre calc
The publisher of a magazine that has a circulation of 80,000 and sells for 1.6 a copy decides to raise the price due to distribution costs. By surveying the readers the publisher finds that the magazine will lose 10,000 readers for every .4 increase in price. What price per ...
January 21, 2008

pre calc
Thank you so much for the help
January 20, 2008

pre calc
suppose you have 102m of fencing to make two side by side rectangles, making one large rectangle when put together. What is the maxium area that you can enclose?
January 20, 2008

physics
How did you get the angle?
January 1, 2008

Math
Henry bought a new dishwasher for $320. He paid $20 down and made 10 monthly payments of $34. What actual yearly interest did Henry pay? 1 - 14.55 2 - 29.09 3 - 34.38 4 - 68.75
December 14, 2007

Math
Thanks!!
December 13, 2007

Math
The decimal form 1.46 becomes ______ expressed as a percent. 1- .146% 2- 1.46% 3- 14.6% 4- 146% 1.46 x 100 = 146% is this correct?
December 13, 2007

Math
Thank you for breaking this down for me!!
December 13, 2007

Math
What is the product of 7/16, 4/3 and 1/2?
December 13, 2007

English
Sorry I get confuse, the text is this: Chinese new year Chinese people celebrate new year in the first new moon of Febraury,it changes every year, it takes two weeks, from the new moon to the full moon, people wear red clothes in new year, they bring good luck in the future. ...
November 21, 2007

english
Is this text correct? Chinese new year The chinese people celebrate new years eve in the first new moon of Febraury,it changes every year, it takes two weeks, from the new moon to the full moon, people wear red clothes in new year, they bring good luck in the future. They ...
November 21, 2007

algebra
what does it mean to solve and check for extraneous solutions for sqry+9=1
November 20, 2007

algebra
yes
November 19, 2007

algebra
i need help to simplify with positive exponents only. (b^2)^-6/b^-4
November 19, 2007

algebra
Solve by factoring x^2 plus 8x ,minus 20 equal 0
November 18, 2007

algebra
can someone tell me if i did the problem correct (solve by completing the square) 4x^2+2x-3=0 x^2+(1/2)=3/4 x^2+(1/2)+(1/4)^2=3/4+(1/4)^2 (x+1/4)^2=13/16 x+1/4=+-sqrt 13/16 x+1/4=+-sqrt 13/4 x=-1/4+-sqrt 13/4 x=-1+-sqrt 13/4
November 18, 2007

i need help..algebra/math
solve by using the quadratic formula: x2 plus x minus 2 equal 0 I know the formula is a=1 b=1 c=2 I'm having trouble solving...please help.
November 16, 2007

***repost algebra.math
So am im posting the graph with 2.5 and -3.25?
November 14, 2007

algebra.math
i need serious help, I'm trying to plot table of values for sketching graph (parabola)for y=x^2-5x+3 xy values are 0,3 1,-1 2.5,-3.25 3,-3 4,-1 5,3 6,9 are these values correct, I'm having problems graphing.
November 14, 2007

Log problem
no i put it exactly how the paper has it log^1/8) and then it has x=-1 I do not understand how to do it at all.
November 14, 2007

Log problems
Solve log(1/8) x=-1 Can some explain how to do this along with the answer.
November 14, 2007

computers
help
November 12, 2007

AP CHEMISTRY
If a Li 2+ ion, initially in the 2nd excited state absorbs a photon of light with a fequency of 2.82 X 10^6 GHz, what will be the final energy level for this electron? Show all stepts to get final energy level. i have no clue what this question is even asking :[?
November 7, 2007

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