Friday
July 3, 2015

Posts by George


Total # Posts: 930

Chemistry
A gaseous mixture of and contains 30.8 nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 505mmHG ? I am getting .41 * (505/750)= .27 .27 is my answer, is this right.
September 26, 2008

Chemistry
Which metal would you expect to generate more gas when exposed to a weakly acidic solution, K or Ca? I say K because it only needs to lose one electron. Is this true?
September 24, 2008

Calculus
At STP, 1.00 g of calcium is placed into an acidic solution, and 407 mL of hydrogen gas is collected. What is the ratio of moles of calcium consumed to moles of hydrogen produced? a)1.37:1.00 b)1.00:1.64 c)0.928:1.00 d) 0.500:1.00 Is the answer A, if so, can you explain the ...
September 22, 2008

Chemistry
Butane,C4H10 , is a component of natural gas that is used as fuel for cigarette lighters.At 1.00atm and 23 degrees Celsius , how many liters of carbon dioxide are formed by the combustion of 1.00 of butane? 2C4H10+13O2 yields 8CO2+10H2o Any help would be greatly appreciated
September 21, 2008

Chemistry
Butane, , is a component of natural gas that is used as fuel for cigarette lighters.At 1.00 and 23 , how many liters of carbon dioxide are formed by the combustion of 1.00 of butane? 2C4H10+13O2 yields 8CO2+10H2o
September 21, 2008

Chemistry
Imagine that you have a 7.00 gas tank and a 3.00 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145 , to what pressure should you fill the ...
September 21, 2008

Calculus
For each value of h, evaluate the following function. Round your answer to four decimal places. lim h->0 (4+h)^(3)-64/h A) h=0.01 B) h=0.001 C) h=0.0001 D) h=-0.01 E) h=-0.001 F) h=-0.0001 For A I got 48.9 For B I got 48.99 For C I got 48.999 For D I got 47.9 For E I got 47...
September 21, 2008

Calculus
For each value of h, evaluate the following function. Round your answer to four decimal places. lim h->0 (4+3)^(3)-64/h A) h=0.01 B) h=0.001 C) h=0.0001 D) h=-0.01 E) h=-0.001 F) h=-0.0001 For A I got 48.9 For B I got 48.99 For C I got 48.999 For D I got 47.9 For E I got ...
September 21, 2008

Calculus
I am given the function P=9e^(-0.9t) In the funcion form P=(P initial)(a^t) what are the values of P initial and a P initial is 9 what is a?
September 21, 2008

CHemistry
Butane, , is a component of natural gas that is used as fuel for cigarette lighters.At 1.00 and 23 , how many liters of carbon dioxide are formed by the combustion of 1.00 of butane?
September 21, 2008

Chemistry
When heated, calcium carbonate decomposes to yield calcium oxide and carbon dioxide gas. How many grams of calcium carbonate are needed to produce 81.0 of carbon dioxide at STP? Is the asnwer 80.95
September 21, 2008

Chemistry
Imagine that you have a 7.00 gas tank and a 3.00 gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 145 , to what pressure should you fill the ...
September 21, 2008

Chemistry
If it takes three "breaths" to blow up a balloon to 1.2 , and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 balloon. Express your answer in moles using two significant figures Would the answer be 0.38 mol?
September 18, 2008

Chemistry
If it takes three "breaths" to blow up a balloon to 1.2 , and each breath supplies the balloon with 0.060 moles of exhaled air, how many moles of air are in a 3.0 balloon. Express your answer in moles using two significant figures Would the answer be 0.38 mol?
September 17, 2008

Calculus
Find the volume of the solid generated by revolving the region enclosed in the triangle with vertices (4.6,4.6), (4.6,0), (6.7,4.6) about the x-axis.
September 16, 2008

physics
can someone help with the question below, it really give me a hard time "thought experiments" were to be conducted on moving trains or rocket ships. Answer following question: 1. What would the results of the free fall experimen be if you set the apparatus up and ...
September 16, 2008

7th grade
is a pea a fleshy or dry fruit
September 14, 2008

Calculus
Find a formula for the derivatives of the function m(x)=1/(x+1) IS the answer -1/(x+h)(x+h+1)
September 13, 2008

Calculus
Use algebra to evaluate the limit of lim h->0 (2-h)^(3)-8/h. Is the answer -12
September 12, 2008

Calculus
Use algebra to evaluate the limit of lim h->0 (2-h)^3-8/h. Is the answer -12
September 12, 2008

Calculus
Use algebra to evaluate the limit of lim h->0 (2-h)^3-8/h. Is the answer -12
September 12, 2008

Calculus
Find a formula for the derivatives of the function m(x)=1/(x+1) Please help.....Any assistance would be greatly appreciated.
September 12, 2008

math
what is this word unscrambled cryhootiamxtmoi
September 12, 2008

Calculus
Let a=8, f(x)=|x-8|/x You are given lim x->a- f(x)=lim x->8- |x-8|/x Is the limit of the value 0.
September 11, 2008

Calculus
Let a=8, f(x)=|x-8|/x You are given lim x->a+ f(x)=lim x->8+ |x-8|/x Is the limit of the value 0.
September 11, 2008

Calculus
Let a=8, f(x)=|x-8|/x Is the value of the limit 0.
September 11, 2008

Calculus
consider k(t)=(e^t)/(e^t-7) on[-7,7] Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the t -value where the function is not continuous. The function is not continous and it is not continous on 7 (which is the t=...
September 11, 2008

Calculus
For f(x)=(3x^2-5x+2)/(2x^2-6) complete the statements. f(x)->_________ as x->-infinity f(x)->_________ as x->infinity In the blanks, I say for the first one infinity then -infinity for the second one.
September 11, 2008

Calculus
COnsider g(x)=(8)/(x-6) on (6,13) (a) Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the x -value where the function is not continuous. Is is continous? If not? what interval then?
September 11, 2008

Calculus
consider k(t)=(e^t)/(e^t-7) on[-7,7] Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the t -value where the function is not continuous. Is the t value 0
September 11, 2008

Calculus
consider k(t)=(e^t)/(e^t-7) on[-7,7] Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the t -value where the function is not continuous. I say continous, am I wrong? If I am wrong what interval is it on?
September 11, 2008

Calculus
COnsider g(x)=(8)/(x-6) on (6,13) (a) Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the x -value where the function is not continuous. Is is continous? If not? what interval then?
September 11, 2008

Calculus
Is this function continuous on the given interval? 7x+(x^2/3) on[-5,5] I say no, because it is undefined at some value in the interval.
September 10, 2008

Calculus
COnsider g(x)=(8)/(x-6) on (6,13) (a) Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the x -value where the function is not continuous. Is is continous? If not? what interval then?
September 10, 2008

Calculus
consider k(t)=(e^t)/(e^t-7) on[-7,7] Is this function continuous on the given interval? If it is continuous, type "continuous". If not, give the t -value where the function is not continuous. I say continous, am I wrong? If I am wrong what interval is it on?
September 10, 2008

algebra
When solving for the roots of a quadratic equation, three (3) possibilities may arise what are these three possible cases? What do each of these cases mean?
September 10, 2008

Calculus
Consider the function f(x)=sin(1/x) Find a sequence of x-values that approach 0 such that (1) sin (1/x)=0 {Hint: Use the fact that sin(pi) = sin(2pi)=sin(3pi)=...=sin(npi)=0} (2) sin (1/x)=1 {Hint: Use the fact that sin(npi)/2)=1 if n= 1,5,9...} (3) sin (1/x)=-1 (4) Explain ...
September 9, 2008

Calculus
Consider the function f(x)=sin(1/x) Find a sequence of x-values that approach 0 such that (1) sin (1/x)=0 {Hint: Use the fact that sin(pi) = sin(2pi)=sin(3pi)=...=sin(npi)=0} (2) sin (1/x)=1 {Hint: Use the fact that sin(npi)/2)=1 if n= 1,5,9...} (3) sin (1/x)=-1 (4) Explain ...
September 9, 2008

Calculus
Consider the function f(x)=sin(1/x) Find a sequence of x-values that approach 0 such that sin (1/x)=0 sin (1/x)=1 sin (1/x)=-1 Is sin sin (1/x)=0 and sin (1/x)=-1 does not exist. What is sin (1/x)=1 then.
September 8, 2008

Calculus
Consider the function f(x)=sin(1/x) Find a sequence of x-values that approach 0 such that sin (1/x)=0 sin (1/x)=1 sin (1/x)=-1 Is sin sin (1/x)=0 and sin (1/x)=-1 does not exist. What is sin (1/x)=1 then. How would I show the sequence of values, any help would be greatly ...
September 8, 2008

Calculus
Use algebraic manipulations to evaluate lim x->infinity for the function. f(x)=x^2+4/x+3 Is the answer 1 or interdemediate?
September 8, 2008

Calculus
Find a value of the constant k such that the limit exists. lim x->1 (x^2-kx+4)/(x-1) Is the answer 5?
September 8, 2008

Algebra
1/x(x+4) Is the answer x+4/x
September 8, 2008

Calculus
A freight company will move one truck load of material according to the following cost schedule: The base shipping fee is $400 for any distance up to and including 150 miles and an additional $50 for each 50 mile increment over 150 miles. The cargo cost is 15 cents per pound ...
September 7, 2008

Chemistry
You have a 12 M solution of hydrochloric acid. How many milliliters of this solution will give 25.0 mL of 2.0 M hydrochloric acid when diluted? Very confusing, If I can get a step by step process on how to figure this out, that would be great.
September 6, 2008

Chemistry
You have a 12 M solution of hydrochloric acid. How many milliliters of this solution will give 25.0 mL of 2.0 M hydrochloric acid when diluted? Very confusing, If I can get a step by step process on how to figure this out, that would be great.
September 6, 2008

Chemistry
10.0 g of H2SO4 are added to 50. 0 mL of water. Is the answer 200. If not how do you approach the problem to get the solution.
September 6, 2008

Chemistry
3.392 g of unknown oxalate product is titrated with 0.201 M KMnO4. The initial burette reading is 11.23 mL, and the final burette reading is 46.88 mL. How many moles of MnO4- were added? Once again any helpwould be greatly appreciated.
September 4, 2008

Chemistry
You have a 12 M solution of hydrochloric acid. How many milliliters of this solution will give 25.0 mL of 2.0 M hydrochloric acid when diluted? Where to start, and Where to end. The process of figuring this problem would be greatly appreciated.
September 4, 2008

english language arts
4)The cross-country team ran (down the avenue) and (through the park).
September 3, 2008

english language arts
Ms.Sue is this right? 1)The puppy came (to our tent) and slept (at the foot) (of my sleeping bag). 2)A skywriter flew (over the field) (during the game). 3)The city was (without power) (for several hours) 4)The cross-country team ran down the avenue and through the park.
September 3, 2008

something
but some of them have adverbs and i get confuse
September 3, 2008

something
identify prepositions and subjects some have more than 1 1)The puppy came to our tent and slept at the foot of my sleeping bag. 2)A skywriter flew over the field during the game. 3)The city was without power for several hours 4)The cross-country team ran down the avenue and ...
September 3, 2008

Language Arts
well it was important beause later on it helped invent wagons and cars ,transpotation, and sign of some intelligence
September 3, 2008

Calculus/Trigonometry
A box of fixed volume V has a square base with length x. Write a formula for the height, h, of the box in terms of x and V. Sketch a graph of h versus x. Is the answer h=V/x^2
September 2, 2008

Calculus
If you can helpme on this problem you are GOD. If f(x) = ax^2 + bx + c, what can you say about the values of a, b, and c if: (A) (1,1) is on the graph of f(x)? (B) (1,1) is the vertex of the graph of f(x)?[Hint: The axis of symmetry is x = -b/(2a).] (c)The y intercept of the ...
September 2, 2008

Calculus
A box of fixed volume V has a square base with length x. Write a formula for the height, h, of the box in terms of x and V. Sketch a graph of h versus x. Is the answer h=V/x^2
September 2, 2008

Trig
The depth of water in a tank oscilliates sinusoidally once every 6 hours. If the smallest depth is 5.5 feet and the largest depth is 8.5 feet, find a possible formula for the depth of time inhours. I say f(x)=6.75+1.25sin(pi/3) Am I right
August 29, 2008

trig
Is this formula continous on the interval (-1,1) h(theta)=(theta)sin(theta) How do you enter theta into the calculator to graph the function. Also, am I suppose to plug in the numbers into the function to determine if it is continous
August 29, 2008

Trig
Is this formula continous on the interval (-1,1) h(theta)=(theta)sin(theta) I say no, but could some one explain the process involved in determining this.
August 29, 2008

Calculus
Find the exact real solutions, if any, of this quadratic equation. Use any method. If there is no real solution enter NONE in each box. 2x^2-5x+3=0 Is the smaller value none andthe larger value none.
August 26, 2008

Calculus
Perform the indicated operations and simplify the result. Leave your answer in factored form. 4+(4/x)/4-(4/x) Give the answer in the form Ax+B/Cx+D is the answer x+4/x-4
August 26, 2008

Contenporay Math
According to the Problem Solving Process, if anyone has completed this course..using Inductive or Deductive Reasoning; How many counselors are needed on campus to prevent students from waiting in long lines for academic advising? Please advise.
August 25, 2008

Calculus
Solve for x using logs. 4 * 16^x = 10 * 11^x Do you start by multiply 4 times 16 then 10 times 11, and then what? Or am I completely wrong?
August 23, 2008

3rd grade trivia contest
In the 2008 World Book Encyclopedia what are the guide words on the page with Komodo dragon?
May 26, 2008

Science
In the 2008 World Book Encyclopedia what are the 'guide words' on the page with komodo dragon?
May 26, 2008

math
1. (sec^2x-6tanx+7/sec^2x-5)=(tanx-4/tanx+2) 2. (sin^3A+cos^3A/sinA+cosA)=1-sinAcosA 3. csc^6x-cot^6x+1+3csc^2xcot^2x please help
April 10, 2008

PLEASE HELP MEwith MATH
i need help bad
March 18, 2008

Ethics
Explain the concept of deceptive advertising and manipulation. Use two credible sources to support your discussion and include examples of these concepts.
March 18, 2008

Ethics
Since I never got any real help with this. I'll repost the question, reworded. I have to compare and contrast two theories in ethics. So I've chosen Utilitarianism and Hedonism. Explaining what each are, how they are used today, and a summary of how they are different.
March 17, 2008

Ethics
Any two, not any specific two
March 16, 2008

Ethics
I have to compare and contrast two (any two) theories or concepts of ethics by providing 2-3 pages of a thorough discussion and exaples of my arguement. How can I write so many pages on something that's hard to understand?
March 16, 2008

artist
Hi, Im writing an essay on Joan Miro and i want to know what the mood of the painting/art is. I know that people found his work to be funny, exciting, imaginative, and scary... thx
March 7, 2008

Speech
hi can u give me a 2-3 minute persuasive speech 2 write on TV violence is harming children
March 3, 2008

Science
I have a 5 minute presentation on Gregor mendel. i already have the speech done and a poster. I am wondering what I could do that would be unique an would make my presenation better than everyone elses beause it is the biggest grade and I need to do good. Please help me.
February 22, 2008

math
a wall in front of a house is shown below. if 3/5 of the wall is made from brick, how do you determine the height of the brick portion of the wall. 7 3/4 height and width 15 1/5?
February 17, 2008

math
9 1/5 - 7 6/25 = 46/5 - 181/25 = 230 - 181/25 = 49/25 = 1 24/25 Now estimate to see if the answer is reasonable by rounding each mixed number to the nearest integer then subtracting.
February 15, 2008

Precalc
Find the values of x between (or equal to) 0 and 360 degrees to satisfy each equation. arcsin1/2=x I got 30 degrees as one angle, but how do I find the second one? arccot1=x Is the answer 45 degrees? Also, Find each value: arccos(-1/2) and sin(2 sin^-1 1/2) Thanks in advance. ...
February 13, 2008

History
The wall of reaction created in Europe by Metternich and other conservatives really collapsed with the A) Peterloo Massacre B) Decemberist Revolt C) Sucess of the Greek Revolution against turkey D) the 1830 JUly Revolution in france I think it is D
February 2, 2008

History
i need an idea for a poster to support the Mountain cause during the french revolution Please I need help
January 1, 2008

business math
Question: You receive the results of a paired-comparison preference these of four soft drinks from a sample of 200 persons. The results are as follows: Koak Zip Pabze Mr.Pep Koak ---- 50 115 35 Zip 150 --- 160 70 Pabze 85 40 --- 45 Mr.Pep 165 130 155 --- a). How does these ...
December 1, 2007

business math
I figured out question (a) However, I am having a problem coming up with the correct answer for (b). Can someone offer me some assistance. Thank you. Question: You receive the results of a paired-comparison preference these of four soft drinks from a sample of 200 persons. The...
December 1, 2007

english
thanks for the help
November 25, 2007

english
Okay, I made a footnote like 1 Finley quoted in Cantarella and put a 1 after the quote. Is that good?
November 25, 2007

english
Should I say the pg number so they know which quote I am talking about? And does that go at the bottom of the page?
November 25, 2007

english
how do I footnote it?
November 25, 2007

english
No, The fact...suggests that is what I said. Finley said women were-at that... and Cantarella quoted Finley in her essay.
November 25, 2007

english
But are you citing both authors? This is what I did, but I do not think it is right: The fact that they did not have first names suggests that “‘women were not, and ought not be genuine individuals, but only fractions of a family. Anonymous and passive fractions at ...
November 25, 2007

english
How do you quote a quote within a quote? Okay, Finley is quoted for saying "blah blah" in Cantarella's essay but I am writing an essay on Cantarella's essay and thus have to quote everything she says. How do I do this double quote? Thanks!
November 25, 2007

english
Thanks anyways. :)
November 25, 2007

english
'The fact taht they did not have first names suggests that' should not be in quotes because that is what I said.
November 25, 2007

english
The fact that they did not have first names suggests that “‘women were not, and ought not be genuine individuals, but only fractions of a family. Anonymous and passive fractions at that…’” (Finely, Cantarella 245). 'women were not, and ought not be...
November 25, 2007

english
But how do you cite it? "She said 'you are so fat, Martha' in that really nasty tone to me," my mother gossiped (Finley, Cantarella).
November 25, 2007

english
I do not think you are answering my question.
November 25, 2007

english
How do you quote a quote within a quote? Okay, Finley is quoted for saying "blah blah" in Cantarella's essay but I have to quote everything Cantarella said. How do I do this double quote? Thanks!
November 25, 2007

math
you can't factor it from there though, can you?
November 11, 2007

math
Is it possible to factor -4x^2-8x+16?
November 11, 2007

math
how do you factor -x^2-7x+10? thanks much
November 11, 2007

Math
if y varies directly as x find the direct variation equation for the situation: y=20 and x=16
October 19, 2007

Precalculus
Well that isnt one of my answers the question is multiple choice another choice is (36 - sq rt 35) + (6 sqrt 7 + 6 sqrt 5)i
October 19, 2007

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