Wednesday
October 22, 2014

Posts by Jack


Total # Posts: 1,339

bio lab
Among 4 choice, which is have most concentration of nitrites ? (reason to causing blue baby syndrome) A. A brand new subdivision of high-priced “McMansions,” complete with golf course, tennis courts and swimming pool. B. A textile plant that produces Braves T-shirts...
March 13, 2008

chem
For the reaction: PCl3(g) + Cl2(g) --> PCl5(g) at 85 degreeC, Kp = 1.19 If one starts with 2.00 atm pressure of PCl3, 1.00 atm pressure of Cl2 and no PCl5, what is the partial pressure of PCl5(g) at equilibrium?
March 12, 2008

social studies
talk bout various aspects of the bill of rights andhow they contribute to american society? underlying ideologies and stuff. put facts to back up your statements. dates. How laws have been changed in various ways.
March 12, 2008

Strategies for understanding Math
devise some real world math problems that focus on the various strategies. eg) trig- mr blue has a triangular wall on his barn, find the angle of x when side y=12m and side z= 6m. (use a diagram to explain the question) or for the really basic addition/multiplication, blah ...
March 12, 2008

algebra
yep ive got that much correct then, im more or less checking if what ive done is correct, thats all. The final answer i got was 2^(3n+2) / 2^(3n-6) Or can that be simplified further?
March 12, 2008

algebra
Hey, im a little confused with this question: 2^n x 4^(n+1) / 8^(n-2) I have to change all bases to 2 then simplify fully. Thanks everoyne.
March 12, 2008

Physics
the force of gravity will have an effect. so will friction. pendulums are probably what you are looking at.
March 11, 2008

agebra
Hey, im a little confused with this question: 2^n x 4^(n+1) / 8^(n-2) I have to change all bases to 2 then simplify fully. Thanks everoyne.
March 11, 2008

reading/writing
hell no. The jews were being persecuted for no reason. they didnt have any food, so fasting was technically normal anyway. there is no reason to fast.
March 11, 2008

chemistry
Please help me with this question For the system, (the previous post i forgot to post the Kp) PCl5 (g) --> PCl3 (g) + Cl2 (g) In a 5.0 L flask, the gaseous mixture consists of all three gasses with partial pressures as follows: PCl5 = 0.012 atm PCl3 = 0.90 atm Cl2 = 0.45 ...
March 9, 2008

Chemistry
Please help me with this question For the system, PCl5 (g) --> PCl3 (g) + Cl2 (g) In a 5.0 L flask, the gaseous mixture consists of all three gasses with partial pressures as follows: PCl5 = 0.012 atm PCl3 = 0.90 atm Cl2 = 0.45 atm Is the system at equilibrium? If yes, ...
March 8, 2008

chemistry
Please help me with this question For the system, PCl5 (g) --> PCl3 (g) + Cl2 (g) K= 26 @ 3000C In a 5.0 L flask, the gaseous mixture consists of all three gasses with partial pressures as follows: PCl5 = 0.012 atm PCl3 = 0.90 atm Cl2 = 0.45 atm Is the system at equilibrium...
March 8, 2008

math
If the question is "What percentage of x is y", then you would just divide x by y and multiply by 100 (y/x*100). So for instance, here we just put the numbers in and get 7.7*10^9/2.58*10^12= 0.002984496124031007751937984496124 multiply that by 100 and get: 0....
March 8, 2008

Math
Where is your function information?
March 6, 2008

English expression
He is not only a great baseball player but also a fine pianist. a. preposition not only but also b. adjective c. correlative d. adverb
March 6, 2008

Math Calculus
I'm not sure how this is calculus... it sounds more like plain probability. So you can figure that there are 2^3*6=48 total possibilities for the outcomes of your tosses (6 for the die and 2 for each coin which are then multiplied together). If your friend only tosses 1 or...
March 6, 2008

Science - Proof of Propositional Logics
I am being asked if I can prove P, L, Q? (without using resolution-refutation). Propositional clauses: 1. P -> V 2. !P -> (!V and F) 3. (V or F) -> Q 4. Q -> L From here I was able, with resolution-refutation, to determine that we cannot prove P but we should be ...
February 9, 2008

maths
2,7755,638 no need to thank me !! :_)
February 1, 2008

English
Not at all. A noun is a person, place, thing, or idea (or concept). This also includes emotions (when properly derived into noun form). John, (The) President, Canada, clock, peace, and happiness are all nouns. A verb is an action -- what the subject of a sentence does. Note ...
January 30, 2008

advanced function
Find an equation with the given form in each case below y=sin through(pie/2, 0)
January 22, 2008

math
Use a graph to solve each system of equations. 3.4x = 6.3y = 4.4 2.1x + 3.7y = 3.1
January 10, 2008

algebra II
A formula for the volume of a sphere is V=4/3 pie r^2. If the radius is 6c^2d^3, what is the volume of the sphere? a. 288 pie c^6d^9 b. 288 pie c^5d^6 c. 8 pie c^2d^9 d. 216 pie c^6d^9 If you could explain this to me.thanks and how do you find x int of a linear function. I'...
January 9, 2008

chemistry
oh sorry, i didnt mean to change those formulas. thanks for the help
January 9, 2008

Algebra
Can you explain slope (y=mx+b) i am having difficulty grasping the concept?
January 9, 2008

history
what were 3 groups of people that were effected by the proclamation of 1763
December 19, 2007

literature
the easy company from the 101st airborne. like the tv series band of brothers.
December 13, 2007

literature
im writing a research paper on the easy company of wwii. well i have some info but my teacher said i have to make it controversial. any ideas on how i could do that. if so please get back to me
December 13, 2007

Orbital Dynamics
Quit trying to cheat.... Keep on failing miserably.
December 13, 2007

science
Can anyone describe what this question means... Describe the big idea of in energy transfer in The Greenhouse effect
December 9, 2007

math
what is 9ft - 7inches
December 5, 2007

Algebra II
Hello. I'm in Algebra II and I'm having trouble with this "math project." The idea was to make a piece of "art" and you have to write the equation for each line. I made a rocket because it looked like something and has all the functions we had to ...
November 28, 2007

biology / plasmolysis of human red blood cells
hypotonic solution
November 27, 2007

Math
OK. I dont understand how to find the prime number to eliminate. I guess what I am looking for is for how you get 125/72 out of 500/288
November 25, 2007

Math
What is the simplest fraction of 500/288?
November 25, 2007

finance
If a firm pays its bills with a 30-day delay, what fraction of its purchases will be paid for in the current quarter? In the following quarter? What if its payment delay is 60 days?
November 18, 2007

Financial analysis
XYZ Corp. Balance Sheet 12/31 2001 Cash $120 Acct. Receivable 260 Inventory 500 Equipment (net) 620 Total assets $1500 Acct. Payable 350 Mortgage payable 500 Capital Stock (100 shares) 200 Retained earinings 450 total equities 1500 Z corp income statement FYE 12/31/01 Sales $...
November 18, 2007

finanical accounting
XYZ Corp. Balance Sheet 12/31 2000 2001 Cash
November 18, 2007

finanical accounting
Z Corp. Balance Sheet 12/31 2000 2001 Cash $ 100 $120 Accounts receivable 250 260 Inventory 400 500 Equipment (net) 550 620 Total assets 1300 1500 Accounts payable 300 350 Mortgage payable 500 500 Capital stock (100 Shares) 200 200 Retained earnings 300 450 Total equities 1300...
November 18, 2007

chem
the spherical glass contains deeeeeek sample
November 17, 2007

math
thank you
November 15, 2007

math
5x+6x-2=10 show the work
November 15, 2007

AP chem
Thanks!
November 7, 2007

English-Lord of the flies
How Jacks behaviour contrasts Ralphs and how that presents ralph as a better person.
October 30, 2007

Science
How does the Sun's rays hitting the Earth affect the seasons?
October 22, 2007

Chemistry
I see, thanks. Is it safe to say that when the periodic table is divided evenly in two, the elements on the left will always lose electrons when forming ions, and vice versa?
October 18, 2007

Chemistry
"Would you expect each of the following atoms to gain or lose electrons when forming ions? What ion [cation/anion] is most likely in each case?" Followed by a short list of elements such as Na and Sr. What I'm wondering is how I'm to know? I can't find ...
October 18, 2007

PHYSICS REPOST
Consider a heavy rope with mass per unit length 2.10 kg/m; a length L=18.00 m of the rope is hanging vertically from a support, as shown. If the support and rope are placed in an elevator accerlerating downward with a=0.800 m/s^2, what is the tension in the rope at point P? (...
October 14, 2007

Physics
Consider a heavy rope with mass per unit length 2.10 kg/m; a length L=18.00 m of the rope is hanging vertically from a support, as shown. If the support and rope are placed in an elevator accerlerating downward with a=0.800 m/s^2, what is the tension in the rope at point P? (...
October 13, 2007

Physics
Driving in your car with a constant speed of v=13.0 m/s, you encounter a bump in the road that has a circular cross section. If the radius of curvature of the bump is r=33.2 m, calculate the force the car sear exerts on a 72.7 kg person as the car passes over the top of the ...
October 13, 2007

Chemistry
Never mind, Hg is mercury. Someone helped me offsite.
October 12, 2007

Chemistry
If the amount of mercury in a polluted lake is 0.4 µg Hg/mL, what is the total mass in kilograms of mercury in the lake? (The lake has a surface area of 100mi^2 and an average depth of 20 ft.) I'll probably be able to solve this once I know what it's going on ...
October 12, 2007

Math
I see, thanks. I must have been doing it wrong when it didn't work.
October 12, 2007

Math
I don't have any specific problems I need help with, but I'm a bit confused about two things: 1) Where 2^x - 1 = y, is x or y the Mersenne prime? 2) I have noticed that in some cases, such as 27 * 3, I can break the problem up and arrive at the correct result: 27 * 3...
October 12, 2007

biology
what is the hollow ball of cells formed during cleavage?
October 11, 2007

Biology
What is an isolecithal egg
October 11, 2007

anthropology
I suppose the discrimination against many people who look like Arabs/Middle Easterners and Muslims in general after 9/11 and the events after it could be considered a global apartheid. Think of any recent racial discrimination common to most of the world.
October 4, 2007

math
Sorry, I meant square root of 4x to the fourth, unless you mean (four times four) to the fourth, which would be (4*4)^4 and would be solved differently. 4x^4 = 4x * 4x * 4x * 4x, then find the square root.
October 4, 2007

math
Square root of four to the fourth? This'd be written as sqrt(4^4). 4^4 = 4 * 4 * 4 * 4. Find the product of that, then the square root of the product.
October 4, 2007

please proofread my paragraph
1. "I was surrounded in noise every day" "I was surrounded by noise every day" 2. "I liked how everyone follows the rules and how everyone drives their car in their own lanes." You've changed tense in the middle of the sentence here; try "...
October 2, 2007

math
Oh! Thanks. XD I've been rearranging polynomials all day and I swear it's hardwired now. "Parentheses; distribute, resistance is futile"
October 2, 2007

math
Actually, I come to h = 160 here (?) so I think I've done something wrong. Are you not supposed to distribute when multiplication is used as in (32 * h)? Sorry, you might want to wait for someone else to explain.
October 2, 2007

math
You should distribute first: 96 = .5(32) + .5h 96 = 16 + .5h Do you know what to do from here?
October 2, 2007

math
That's better. The area of the rectangle is (12 * 8) or 96 sq. in. 96 = .5(32 * h) Solve for h; post if you need more help.
October 2, 2007

math
Is there enough information to solve this? I can't figure out how it might be set up (even plugging in answers to see if they fit) without more information, such as some about the rectangle, or the area of the triangle. Maybe someone else knows.
October 2, 2007

math problems
2(24 * 9) + 2(18 * 9) = ? (Four walls -- two 24 by 9 and two 18 by 9, equal the amount of wallpaper needed). Don't forget to convert the result from feet to yards.
October 2, 2007

biology
Plankton, I think, as most other marine organisms depend [at least indirectly] on plankton, as they feed on them or feed on those who feed on them, and the absence of the base of a marine food chain would cause more problems overall than that of a group of predators.
October 2, 2007

Math
Compute is to calculate or evaluate.
October 2, 2007

math
Fractions are converted to decimals by dividing a by b in a/b. For example, 3/4 = .75. Some decimals and fractions are easy to remember -- such as 1/2 = .5, but most you will have to calculate on your own.
October 2, 2007

Maths
I thought that one million billion would be represented as (10^6)^9 in which case it would be 10^54 but the handy-dandy calculator begs to differ. The output is the same for 1,000,000*1,000,000,000 and 10^15. I can't explain to save my life, so wait around for bobpursely ...
October 2, 2007

Math
4(x+5)+3x squared+6(x+1) 4(x + 5) + 3x^2 + 6(x + 1) (^n represents ...to the power of n) First, distribute 4(x + 5) and 6(x + 1): 4x + 20 + 3x^2 + 6x + 6 Then combine like terms 4x and 6x; 20 and 6: _______________ |10x + 26 + 3x^2| ‾‾‾‾‾‾&#...
October 1, 2007

mathematics
The two-dight number that is divisible by both the sum and the product of its digits?
September 30, 2007

mathematics
A number n where if the sum of the dights of the number is divisible by n, then the number itself is divisible by n.
September 30, 2007

mathematics
One of the four numbers where n,has n dights????????????????????????????????????????????????????????????????????????????????
September 30, 2007

math
The largest integer that is not the sum of two or more different primes?
September 30, 2007

math
The Pythagorean masculine marriage number?
September 30, 2007

mathematics
I bet no one knows.
September 29, 2007

math
Use Google as a converter. These queries: 45 grams in milligrams (or '45g in mg') 3.7m in cm 2.34kilolitres in litres etc. Will all convert for you.
September 28, 2007

Algebra 1
4n-2+7n=20 First, we can combine the like terms 4n and 7n to get: 11n - 2 = 20 Then, add two to both sides: 11n = 22 Then, divide both sides by 11: n = 2
September 27, 2007

science
An experiment of your own is generally a reliable way to support or disprove your hypothesis, but if you don't have time or resources for it you could search for similar experiments or Google to see if there's anything written about our ability to locate stimuli ...
September 27, 2007

spanish HELP HELP
I'm having trouble making sense of the first sentence, maybe because I'm tired, but I think 'le' is correct. In 2, the waiter, being not the direct object but affected by the subject's actions on the DO, is the indirect object, and le is correct. In 3, as ...
September 26, 2007

math
Yvonne drove 11/2 hours to get to the airport. She arrived at 12.10A.M What time did she leave for the airport? Should she have lunch at the airport? why?
September 26, 2007

Reading
I believe that's the one. It may be dozed is to napped, but IMO you're likely correct.
September 26, 2007

Reading
Slipping leads to or is a lesser form of falling. What word pair matches that?
September 26, 2007

math
Associative property -- however a group of terms is arranged, their sum remains the same.
September 26, 2007

language arts
The verb they've given you is wrong; you need to find the correct form of it. Present: Speak. Past: Spoke. Past participle: Spoken. I speak, I spoke, I have spoken. If it's used with a helping verb such as 'have', it's likely a past participle. The ...
September 26, 2007

spanish
Whoops, thanks. XD
September 26, 2007

spanish
It'd be "a la una y media" just as in "es la una..." unless I've forgotten and am doing it wrong. I haven't had to tell time in Spanish outside of classes, funnily enough, so I could have made a mistake.
September 26, 2007

spanish
To indicate the time at which something happens, use "a la..." or "a las..." as in: La clase comenza a la una y media y termina a las dos y catorce -- The class begins at 1:30 and ends at 2:14.
September 26, 2007

division
The result of the operation. In 8/2 = 4, 4 is the quotient.
September 26, 2007

Reading
A paw is part of a cat. What pair of those choices fits the same description?
September 26, 2007

science
As far as I know, height is an object's distance from the immediate ground (the distance of the top of a flagpole from the ground below) whereas elevation is the height of an object or area of land above sea level.
September 26, 2007

Algebra
(y^5)^3(y^3)^2/(y^4)^4 Power of a power: When an exponent has an exponent, both are multiplied and applied to the base of the first. Example: (y^5)^3 = (y^15) When multiplying terms with exponents, the exponents are added: (y^15)(y^6) = (y^21) When dividing, they're ...
September 26, 2007

computers
n. Data entered into a computer; v. To enter data into a computer (as I am by typing).
September 25, 2007

Grammar -- subject-verb agreement
Thankya. :o
September 25, 2007

Grammar -- subject-verb agreement
We're to choose the appropriate verb for the subject El oh el, I fail; I meant pronoun.
September 25, 2007

Grammar -- subject-verb agreement
Oh, I was doing it wrong, looking at the surrounding context and not the subject it was related to, wasn't I? Thanks.
September 25, 2007

Grammar -- subject-verb agreement
"Susannah Wheatley, wife of slaveholder John wheatley, took great interest in Phillis's education, and it was (she/her) who taught Phillis how to read and write English." We're to choose the appropriate verb for the subject (Susannah Wheatley), but I'm ...
September 25, 2007

math
I'm glad to hear it worked out alright. :D
September 25, 2007

math
It's not usual for some people to feel overwhelmed by such an open-ended assignment -- I was often confused when I wasn't told exactly what I was to do (I worried that I'd do it wrong, maybe?). If it were me, I might go for a poster, and come up with creative ways ...
September 25, 2007

algebra 1
Are you supposed to solve for something?
September 24, 2007

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