Wednesday
July 23, 2014

Posts by jake


Total # Posts: 1,726

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

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...

organic
alpha-amino

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 ...

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 follow...

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 by...

english
Which of the craftsmen is in charge of the rehearsals?

math
how do you square numbers when your typing?

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.

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)]

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)]

organic
Explain why glucose undergoes mutarotation

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

chemistry
C6H5NO2+? = C6H5N2Cl

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

chemistry
what is the best combination for preparing CH3CH2CH2CH2OCH3 is CH3CH2CH2CH2OH+NaOCH3 CH3CH2CH2CH2ONa+NaOCH3 CH3CH2CH2CH2Br+NaOCH3 CH3CH2CH2CH2Br+CH3Br

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

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

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

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

7th grade pre algebra
The Answer is: Chicken Wings

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

science
why is mitosis important?

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.

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.

Science
What bird is considered a sign of the coming spring?

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

nonfiction
just took test 100 answers are crrect

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.

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...

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 teac...

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

Algebra
a+6a-9=30

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???

8th Grade Algebra...HELP!
yes

algebra
Is the LCM for xy, y3 = x3y3, y3

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)

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)

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 hi...

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 ophiop...

ORGANIC CHEMISTRY
by x in the first one did you mean OH

ORGANIC CHEMISTRY
WHAT IS THE BEST COMBINATION OF REACTANTS FOR CH3CH2CH2CH2OCH3

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

organic chemistry
How many stereogenic carbon atoms does the alkaloid morphine have?

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

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

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. ...

history
The Christian Church helped preserve what traditions in the German kingdoms.

arithmetic
1/2

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....

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.

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...

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

history
Who is roberto clemente?

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.

Statistics
.0069

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

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

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

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

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

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?

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

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?

music
what is soldja boys tone or rythym :)

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.

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

history
Who did the Progressive Party run for president in the 1912 election?

math
How do I do the LCM?

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...

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 ...

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 ...

bio II
The molecule that provides energy for active transport is?

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

social science
Can someone give me like a short five sentence paragraph on What was the Renaissance? I am just having a hard time grasping onto that concept. Just a brief description would help me understand it a lot easier. thanks in advance to whoever can help me :-)

Physics
Thanks. :)

Physics
A 66.0 kg diver is on a diving board, which is 1.10 m above the water. He falls at a speed of 9.10 m/s. Calculate his kinetic energy as he hits the water. I know KE is 1/2mv^2, but how can I find KE when height is involved?

social studies
why did the great wall lose its importance after Wu Di's reign

science
what can you use to decide whether liquids tested are polar or nonpolar?

science
what basis can you use to decide whether liquids tested are polar or nonpolar?

science
A substance in a solid at room temperature. It is unable to conduct electricity as a solid but can conduct electricity as a liquid. This compound melts at 755 degrees celsius. Would you expect this compound to have ionic bonds, metallic bonds, or covalent bonds? A) metallic bo...

science
below are about 21 questions from my final study guide. I was given a 563 question study guide for my final and obviously I did not understand every question. So basically I did not understand 4% of the questions which is pretty good. Just any help with the questions below wou...

science
This is a science question so be prepared. lol How many orbitals does hydrogen (H) have? 1 or 2 or 3 How many orbitals does oxygen (O) have? 1 or 2 or 3

science
I need some help with my science homework. Well it is not really my homework it is my study guide but the actual test is the same as the study guide almost. They just switch around the words and stuff around to mess with your mind. These were just the only 7 problems I need he...

science
I need some help with my science homework. Well it is not really my homework it is my study guide but the actual test is the same as the study guide almost. They just switch around the words and stuff around to mess with your mind. These were just the only 7 problems I need he...

long physics E&M
i have the same problem.

Maps
I need to find a map where I can highlight countries on it. It has to have Switzerland, Europe, and The United States included on it.

physcial science
a 50 kg crate is lifted to a height of 10 meters. a. how much potential energy does the crate have after being lifted? b. if it took 5 seconds to lift the crate, using a machine what was the power rating of the machine?

physical science
a car of mass 900 kg move at 10 m/s. What is the braking force required to stop the car in a time of 5 seconds?

physical science
this is the question in the book, i dont understand either

physical science
find the net force produced by a 40 Newton force and a 50 Newton force in each of the following cases: Both forces act in the same direction both forces act in opposite directions.

physical science
Thats all the information i have

Psychology
When was the California Psychological Inventory created?

Psychology
Where was the Rorschach ink blot test created? I know it was created by a Swiss psychologist Hermann Rorschach but where?

Math
To gather enough nectar to make 1 pound of honey, a bee must visit 2 million flowers. How many flowers must a bee visit to make 64 ounces of honey?

AP Chemistry
Could you please review my work and see what i'm doing incorrectly? Thank you Given this information: CxHyOz (s) + O2 (g) ----> CO2 + H20 given: 2.165 g of the unknown hydrocarbon v = 1.868 L P = 130.2 kPa T = 65.0 degrees C g of H2O = 1.818 a)find g H in hydrocarbon 1....

Chemistry
this helped so much! thank you, i understand now.

Chemistry
Sorry I have one other question that i'm unsure about. for the solution process of A (s)----> A (aq) the teacher demonstrates upon mixing A in H2O that the temp falls from 22 to 5 degrees C. The soluability of this solid is known to be 28g/100g H2O at 30 degrees C. If t...

Chemistry
thank you

Chemistry
If the partial pressure of CO2 is 2.87 atm the soluability in H2O is known to be 4.68 M. What would be the soluability of CO2 in H2O if the partial pressure is increased to 7.60 atm? Assume the temp is held constant. would it work to set up a proportion for this question? if n...

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