Tuesday
October 21, 2014

Posts by jake


Total # Posts: 1,751

college Chemistry
Ok this is the question... Complete the combustion of butane... CH3CH2CH2CH3 + O2 ====> ____________
January 21, 2009

sceince
1) which scientist's work did Copernicus contradict? 2) what made it difficult for him to prove his theory? i researched some site but still i dont get it...
January 11, 2009

science
1) which scientist was later imprisoned for openly supporting the Copernican theory? 2) what did he discover that helped prove that Copernicus was correct?
January 11, 2009

science
1) which scientist's work did Copernicus contradict? 2) what made it difficult for him to prove his theory?
January 11, 2009

Math
40 + 40 = 80 so 2 1/2
January 8, 2009

social studies
There are 32 people.
January 8, 2009

Algebra I
Stephen is walking from his house to his friend Sharon's house. When he is 12 blocks away, he looks at his watch. He looks again when he is 8 blocks away and finds that 6 minutes have passed. Write 2 ordered pairs for these data in the form (time, blocks). Write a linear ...
January 7, 2009

Algebra
Write the equation of a line in slope intercept form that contains (3/4, 1/2) and has the same slope as the line described by y + 3x = 6.
January 7, 2009

mathh help pleaseee (: ! <345
11. It is $20 to start, every hike, you are charged $2 more from the second company. If you divide 20 by 2, 10 will be even and at 11 it will be 2 $ more.
January 7, 2009

chemistry
its 2/1000
January 5, 2009

Science - gr. 10 physics
How do you find displacement when given a velocity/time graph?
January 5, 2009

7th grade
is this like a homework question or are you just wondering?? lol
January 5, 2009

chemistry
Do you mean 58g/mole?
January 5, 2009

math
How could knowing that 35/7=5 help you find 42/7? Explain
January 5, 2009

Math-Gr.11 urgent
hi, i was wondering where you got: 20/2[2a + 19d] from, im in yr 11 but want to start revising a level because i want to get a phd in maths, so i just wanted to know where you got it from, if you could answer this, then thanks
January 4, 2009

biology
Because it can
December 17, 2008

History
Ok I know now that the answer is If they left England, they would be Separatists instead of Puritans, and that bothered them. thank you
December 10, 2008

History
Ok the first one is B? The reason I was confused on it was because that all 3 of them could work. I just didn't know which one was best I guess. And with the other question, I'm still not sure but I think it was fear of Mohawk Revolt?
December 10, 2008

History
Well I didn't just copy and paste those even if it might look like it. And I only asked 2 questions. Anyway for the first one I am currently thinking that it is probably A or C? Tuxedo's aren't a necessity, yet they are a nice contribution, and the bravery that C ...
December 10, 2008

History
If someone says that Pilgrims didn't do much for us, what should we say to them? A. Tuxedos were invented because of those black and white outfits the Pilgrims wore. B.That Mayflower Compact they made was the first constitution ever written in North America, and it was ...
December 10, 2008

english
should i add more information 2 my side....or equal information about both sides thanks
December 7, 2008

english
thank you, also i have to be able to sympathsize with the other side, but last time i wrote an essay and did that for this class, it sounded like i was for both sides. how do i make it so that i can strongly agree with 1 side, but also can understand where people are coming ...
December 7, 2008

english
im writing a research essay about the legalization of drugs are there any good websites you have for this topic? Also i have to say which side i take without saying the other side is wrong, and dont know how to make this paper sound too general.
December 7, 2008

accounting
If i have $550.00 a week.how much is the state deductions in the state of california for one week?
December 7, 2008

Chemistry
Given: H3PO4(aq) + 3 NaOH(aq) yields 3 H2O(l) + Na3PO4(aq) change in H = -166.5 kJ What is the value for q (heat) if 4.00 g of NaOH reacts with an excess of H3PO4? Please can you explain to me HOW to do this, not just give me an answer? Thanks!
November 30, 2008

Chemistry
Given: H3PO4(aq) + 3 NaOH(aq) ¨ 3 H2O(l) + Na3PO4(aq) ƒ¢H = -166.5 kJ What is the value for q (heat) if 4.00 g of NaOH reacts with an excess of H3PO4? Please can you explain to me HOW to do this, not just give me an answer? Thanks!
November 30, 2008

Science
True/False - A generator that doubles the electrical energy from a wall outlet without any additional input of energy will work. - The total amount of energy in the universe is constant. thank you
November 21, 2008

organic
a peptide contains amino acids Phe,Gly Met,Ala, and Ser. N-terminal analysis yielded the PTH derivative of alanine. Partial hydrolysis of the petapeptide yielded the dipeptides Gly-Ser, Ala-Gly, and Ser-Met. The peptide sequence is what? Ala-Gly-Ser-Phe-Met Ala-Gly-Ser-Met-Phe...
November 20, 2008

organic
alpha-amino
November 20, 2008

organic
which is false about naturally occurring a-amino acids? they belong to the D family of chiral compounds related to D-glyceraldehyde all are chiral except for glycine each has a characteristic isoelectric point the ph at which there is no net migration of the amino acid toward ...
November 20, 2008

organic
what is the best synthesis of 2-heptanol CH3CH2CH2MgBr(2 moles)+formaldehyde in diethyl ether followed by H3O+ CH3CH2CH2MgBr+butanal in diethyl ether followed by H3O+ CH3CH2CH2CH2MgBr+acetone in diethyl ether followed by H3O+ CH3CH2CH2CH2CH2MgBr+ethanal in diethyl ether ...
November 20, 2008

organic
what is the best synthesis of 4-heptanol (CH3CH2CH2)2CHOH CH3CH2CH2MgBr (2 moles)+formaldehyde (CH2=O) in diethyl ether followed by H3O+ (CH3CH2CH2)2ChMgBr+formaldehyde (CH2=O) in diethyl ether followed by H3O+ CH3CH2CH2MgBr+butanal (CH3CH2CH2CH=O) in diethyl ether followed ...
November 20, 2008

english
Which of the craftsmen is in charge of the rehearsals?
November 17, 2008

math
how do you square numbers when your typing?
November 15, 2008

AP Chemistry!!!!
For our test in a few days, we heard that there was something for pi and sigma bonds overlapping...can someone explain to me the "hybridizaiton" of where they overlap?? I dont understand it.
November 11, 2008

maths
Find the roots of z^6 + 1 and hence resolve z^6 + 1into read quadratic factors; deduce that cos3x = 4[cos(x) -cos(pi/6)][(cos(x) -cos(pi/2)][(cos(x) -cos(5pi/6)]
November 10, 2008

maths
Find the roots of z^6 + 1 and hence resolve z^6 + 1into read quadratic factors; deduce that cos3x = 4[cos(x) -cos(pi/6)][(cos(x) -cos(pi/2)][(cos(x) -cos(5pi/6)]
November 10, 2008

organic
Explain why glucose undergoes mutarotation
November 8, 2008

Organic
Are any of the following a tertiary amine 2-methyl-2-butanamine N-Methyl-1-butanamine N-Methyl-2-butanamine
November 8, 2008

chemistry
C6H5NO2+? = C6H5N2Cl
November 8, 2008

chemistry
The reaction of sec-butylmagnesium bromide with formaldehyde followed by hydrolysis yields? 2,2-dimethyl-1-pentanol 2-butanol 2-methyl-1-butanol 2-pentanol 2,2-dimethyl-1-propanol
November 8, 2008

chemistry
what is the best combination for preparing CH3CH2CH2CH2OCH3 is CH3CH2CH2CH2OH+NaOCH3 CH3CH2CH2CH2ONa+NaOCH3 CH3CH2CH2CH2Br+NaOCH3 CH3CH2CH2CH2Br+CH3Br
November 8, 2008

organic
which phenol is the most acidic? phenol 2-methyl-6-nitrophenol 3-methyl-5-nitrophenol 2,6-dimethyl-3-nitrophenol 2,4,6-trimethylphenol
November 8, 2008

chemistry
what is the best synthesis of 2-methyl-2-pentene (CH3)2C=CHCH2CH3? 1.(CH3)2CHCH2CH2CH3+F2,heat 2. KOC(CH3)2 1.(CH3)2CHCH2CH2CH3+Cl2,heat2.NaOCH2CH3 1.(CH3)2CHCH2CH2CH3+Br2,heat2.NaOCH3 1.(CH3)2CHCh2CH2CH3+I2,heat2.NaOCH2CH3
November 8, 2008

o chem
Which is not correct? glucose is a reducing sugar glucose has six carbon atoms glucose undergoes mutarotation glucose is a disaccharide glucose is an aldose
November 7, 2008

o chem
a-D-glucose and b-d-glucose can best be described as? -diasteromers -constitutional isomers -different conformations -enantiomers -keto-enol isomers
November 7, 2008

7th grade pre algebra
The Answer is: Chicken Wings
November 6, 2008

math
estimate quotient and divide (how do you estimate the quotient? 552 divided by 71,520 I dont understand the steps.
November 6, 2008

science
why is mitosis important?
November 2, 2008

7th grade algebra
Are you trying to say this disproves the Associative property? because the associative property is only if the operation contains all and ONLY addition signs or all and ONLY multiplication signs. Not if it contains both.
October 17, 2008

Math
Using only addition and subtraction, without changing the order of the digits, and having just three operations, form an equation out of 123456789 that equals 100.
October 14, 2008

Science
What bird is considered a sign of the coming spring?
October 4, 2008

3rd grade art
He is doing a book report. (Old school.) LOL
October 4, 2008

nonfiction
just took test 100 answers are crrect
October 1, 2008

math 7th grade
well if you're trying to find the difference: 20 - (-10) = 20 + 10. So the difference is 30. You can just add it's opposite. Ex. -30 - -20. That = -30 + 20. therefore the answer is -10.
September 22, 2008

science plzzz help
Mass vs. Weight: Although the terms mass and weight are used almost interchangeably, there is a difference between them. Mass is a measure of the quantity of matter, which is constant all over the universe. Weight is proportional to mass but depends on location in the universe...
September 21, 2008

science plzzz help
I'm not entirely sure but I think the main difference is that mass is used in relation to the metric system (metric syst. is used universally in compiling data from scientific findings)and I think weight is used in the customary system. LOL! All I remember is our Chem ...
September 21, 2008

Math
i can't find these patterns. my mom and dad tried to. first problem 64,__,___,___,32 second problems 61,___, ___, ___, 81
September 18, 2008

Algebra
a+6a-9=30
September 17, 2008

Math
How do you solve the following equation x2 - 5x = 14 x2 - 5 x - 14 = 0 (x - 7) (x + 2) = 0 x = 7 or x = -2 How do I explain this to my son who was not taught this way???
September 9, 2008

8th Grade Algebra...HELP!
yes
September 4, 2008

algebra
Is the LCM for xy, y3 = x3y3, y3
September 4, 2008

Science
It is an imaginary line that goes around the center of the earth to separate the northern hemisphere (top) from the southern hemisphere (bottom)
September 4, 2008

chemistry
I would say temperature because increasing temperature would cause molecules speed up and increase volume and decreasing temperature usually decreases molecular speed and causes volume to decrease (except for water)
September 4, 2008

Chemistry/hydrolysis of ATP
A freshman studying medicine at an Ivy League College is a part of his class crew team and exercises regularly. After a particularly strenuous exercise session, he experiences severe cramps in his thighs and pain in his biceps. Explain the chemical process that occurred in ...
August 28, 2008

Men's Health
I was wondering if someone know's aof a web-site that may be able to help me I have to look up the following and explian them also benefits and risks of them thanks ( Basically what effects good/bad have on Men's health) Epimedium Leaf Chinese Dodder Seed Ginseg ...
August 7, 2008

ORGANIC CHEMISTRY
by x in the first one did you mean OH
July 27, 2008

ORGANIC CHEMISTRY
WHAT IS THE BEST COMBINATION OF REACTANTS FOR CH3CH2CH2CH2OCH3
July 27, 2008

ORGANIC CHEMISTRY
WHICH ONE OF THE FOLLOWING ALKYL HALIDES GIVES THE HIGHEST RATIO OF SUBSTITUTION TO ELIMINATION ON TREATMENT WITH SODUM ETHOXIDE IN ETHANOL 1-BROMOPENTANE 2-BROMOPENTANE 3-BROMOPENTANE 1-BROMO-2-METHYLBUTANE 2-BROMO-2-METHYLBUTANE
July 27, 2008

organic chemistry
How many stereogenic carbon atoms does the alkaloid morphine have?
July 26, 2008

o chemistry
are the Cl, CH3, and H on opposite sides or on the same sides
July 26, 2008

o chemistry
What is the newman projection of meso-2,3-dichlorobutane?
July 26, 2008

o chem
chlorination of nitrobenzene under conditions of electrophilic aromatic substitution occurs? a. Faster than chlorination of benzene and gives a mixture containing mostly o- and p-chloronitrobenzene. b. faster than chlorination benzene and gives mostly m-chloronitrobenzene. c. ...
July 19, 2008

history
The Christian Church helped preserve what traditions in the German kingdoms.
July 14, 2008

arithmetic
1/2
June 24, 2008

physics
15g iron (c=450 J/kg K) bolt is heated from 21 C to 312 C. It is then plunged into a 2kg of 15 C water (c= 4180 J/kg K) into a 4.6kg alum. tub (c=903 J/kg K) What is the final temp. (Tf) of the water and the tub? for some reason..., i got 0.472 C for final temp of tub and -14....
June 10, 2008

arithmetic
Actually he could earn $2141+ if he put the money in the the bank for 5 years and he would have immediate access to it if he needed it.
June 9, 2008

Chemistry
A chemist wishes to determine the concentration of CrO4-2 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is composed of mercury in contact with a saturated solution of calomel (Hg2Cl2...
May 28, 2008

algebra
two records and three tapes cost $31.three records and two tapes cost $29.find the total cost of each record and each tape
May 26, 2008

history
Who is roberto clemente?
May 23, 2008

math
Find the area between each curve and the x axis for the given interval. y=16x-x^3 from x = 0 to x = 4 Thanks ahead of time.
May 14, 2008

Statistics
.0069
May 14, 2008

Electronics/Circuits
Just a simple one... which symbol should I use to represent a strain gauge on circuit diagram? Thanks
May 11, 2008

Algebra 2
5/2(x-1), 1/2x, 3/2(x-1)^2=?
April 30, 2008

MATH
the class president plans to randomly select a committee of three people from three boys and five girls. How many committees are possible?
April 16, 2008

math/trigonometry
solve secx/2=cosx/2 over the interval[0,2pi) without using a calculator
April 14, 2008

Physics
Does the uncertainty principle tell us that we can never know anything for certain?
April 2, 2008

Physics
We don't notice the wavelength of moving matter in our common experience. Is this because the wavelength is extraordinarily large or extraordinarily small?
April 2, 2008

Physics
If a cannonball and a BB have the same speed, which has the longer wavelength?
April 2, 2008

Physics
If you shine an ultraviolet light on the metal ball of a negatively charged electroscope, it will discharge. But if the electroscope is positivelely charged, it won't discharge. Why?
April 2, 2008

music
what is soldja boys tone or rythym :)
April 1, 2008

history
President Taft's secretary of the interior, Richard A. Ballinger, disapproved of conservationist controls of western lands? true or false if false then what.
March 25, 2008

history
Who did The republican party run for president during the 1912 elections? Democratic Party? Socialist Party?
March 25, 2008

history
Who did the Progressive Party run for president in the 1912 election?
March 25, 2008

math
How do I do the LCM?
March 23, 2008

Math(Easy Survey Please Help)
I need 75 of these surveys filled out to do a regression analysis for Economics. Just answer the 10 easy questions for me please. 1. Do you exercise or work out on a regular basis? 2. Are you male or female? 3. Do you smoke? 4. How many carbonated soft drinks do you consume in...
March 22, 2008

AP Chemistry
i'm having trouble balancing the redox reaction for the iodine clock lab. The redox reaction inovlves a hydrogen sulfite ion and iodate ion in an acidified solution. i have the final balanced equation, 5 HSO3 + 2 IO3 ---> I2 + 5SO4 + H20 + 3H but i'm having trouble ...
March 13, 2008

kinda easy geometry
I know this geometry question may be simple for some of you but it is hard for me. I use to be able to do this type of problem but I guess I forgot it over time. Im sure we all do. Any help on this question would help. Thanks in advance for whoever helps me. :-) A line passes ...
March 9, 2008

bio II
The molecule that provides energy for active transport is?
March 5, 2008

science
A + B -----> C is an example of a A) double-displacement reaction B) synthesis reaction C) single-displacement reaction D) redox reaction E) decomposition reaction
March 5, 2008

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