Friday
August 1, 2014

Posts by jason


Total # Posts: 1,085

math 7th grade
A coin is tossed. If a head appears, a spinner that can land on any of the numbers from 1 to 5 is spun. If a tail appears, the coin is tossed a second time instead of spinning the spinner. What are the possible outcomes? A. (T,H)(T,T)(T,1)(T,2)(T,3)(T,4)(T,5) B. (T,H)(H,H)(T,1...

math
A coin is tossed. If a head appears, a spinner that can land on any of the numbers from 1 to 5 is spun. If a tail appears, the coin is tossed a second time instead of spinning the spinner. What are the possible outcomes? A. (T,H)(T,T)(T,1)(T,2)(T,3)(T,4)(T,5) B. (T,H)(H,H)(T,1...

Biochemistry
How were the 3 coupling sites in phosphorylation discovered using ETC poisons and artificial electron acceptors?

finance
A firm has $600,000 in current assets and $150,000 in current liabilities. Which of the following is correct if they use cash to pay off $50,000 in accounts payable? 1)Current ratio will increase to 5.0. 2)Net working capital will increase to $500,000. 3)Current ratio will de...

finance
An increasing average collection period indicates 1)the firm is generating more income. 2) accounts receivable are going down. 3) the company is becoming more efficient in its collection policy. 4) the company is becoming less efficient in its collection policy.

Finance Management
Suppose the population of Area Y is relatively young and the population of Area O is relatively old. Would interest rates likely be the same or different in the two areas? Explanin. Would a trend toward nationwide branching by banks and the development of nationwide diversifie...

math
solve: x lnx - 30 + 5 lnx - 6x = 0

Chem
What is the original molarity of a solution of ammonia whose pH is 11.11 okay i tried to convert to pOH- so i got 2.89 and then to [OH]=1.288e-3 and then solve using Kb=1.8e-5 whats going wrong???

Chemistry
okay i dding get 48.8 i got 68...

chem
Describe the melting point you expect to observe if the isolated product is the mixture of both syn and anti addition of bromine.

chem
write a mechanism for the reaction of sodium chloroacetate with 4-chlorophenolate. - i know its a sn2 mechanism, but I dont know who to go about from here

biology
Can someone explain to me how 2,3 BPG works for hemoglobin? BPG affects oxygen binding affinity by binding in a small cavity at the center axis of deoxygenated hemoglobin. In oxygenated hemoglobin, this cavity is too small to effectively accommodate 2,3-BPG. When bound, 2,3-BP...

College Prep
Thank you Ms. Sue

College Prep
Scenerio: Two days ago your manager phoned and said he would like to plan a field contact in order to evaluate your promotional deals and marketing skills. He will meet you at Kroger's, your top account, at 2:00 p.m. You immediatly got antsy because you know how important ...

chem
thank you sooo much. you guys are great.

chem
What would be the effect of raising the temperature and increasing the carrier gas flow rate on the ability to resolve two closely spaced peaks in gas chromatography? -I was thinking that the width or the maximum peak of each curve will change since the retention time is decre...

History - School Project
Can someone please help me think of some ideas for an invention project? We just learned about some famous inventors in history and we have to now come up with our own invention. This can be something totally new, or it can be an improvement on a previous idea (but must have 3...

Math
5+67=

arithmetic
n=(3/5)2N=

physics
Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2 falls to the ground, ...

Physics
Two balls are connected by a string that stretches over a massless, frictionless pulley. Ball 1 has a mass of 0.45 kg and is held 0.74 m above the ground. Ball 2 has a mass of 5.7 kg and is held 0.88 m above the ground. When the balls are released, ball 2 falls to the ground, ...

social studies
what is the largest river that runs through asia

economics
I answered some questions. pls check if they are correct and pls help in questions e and f. Production Possibilities Possibility Maximum Units of Good A Maximum Units of Good B a 200 0 b 180 60 c 160 100 d 100 160 e 40 200 f 0 220 a. Plot these production possibilities, label ...

math
Tom spent (in order) a third of his life to date in the united states, a sixth in india, twelve years in egypt, half the remainder of his time in australia, and as long in canda as he spent in india. where did he spend his fortieth birthday? use an alegbraic equation to solve ...

Math
1)Write a quadratic equation with integer coefficients that has -4+7i(Radical 3) and -4-7i(Radical 3) as its roots. 2) Solve your answer to part 1 using the quadratic formula verifying your answer

pre cal
solve for x: x^(2/3)=(1/27) (2^(x)+4)/(2^x)=2 explain please

physics
a crane drops a .3 kg steel ball onto a steel plate. the ball's speeds just before impact and after are 4.5 m/s and 4.2 m/s respectively. If the ball is in contact with the plate for .03 s, what is the magnitude of the average force that the ball exerts on the plate during...

chem
which of the following could be used to dissolve a carboxylic acid into the aqueous phase? a)MgSO4 b)1.5 M HCl c)1.0 M NaHCO3 d)2.0 M Na2SO4 e)saturated NaCl I'm leaning towards choice e because you can have an aqueous solution of sodium salt and a carboxylic acid.

English
What does Martin Luther King mean by "Continue to work with the faith that unearned suffering is redemptive?"

central america & the caribbean
yea ok kool,

central america & the caribbean
aight then thanx

central america & the caribbean
word bank : belize,costa rica ,coffee, cuba,honduras,lead,mestizos,multicultural,oil,panama canal,puerto rico,rice,sugar cane, slavery,canal 2.___was introduced in the caribbean after indians died from european diseases. 3.central america is an ___between north and south ameri...

CHEMISTRY
Observations Mass of Fe metal:100 MG Volume of water in Calorimeter: 100 ML Mass of water in Calorimeter (use 1g per ml): 100G Initial Temperature of metal: 20 Initial Temperature of water: 20 Final Temperature (both metal and water): 100 Determine the heat gained by the water...

English- vocab
can you please help me figure out a word that means something that happens for no reason and we dont know the reason why it happens. i dont think its mystery, I'm not sure.

chem
Would you expect 2-chlorobutane to react faster or slower than 2-bromobutane under Sn1 conditions? Sn2 conditions?

chem
would you expect 2-chlorobutane to react faster or slower than 2-bromobutane under sn1 conditions? sn2 conditions? - would it slower because of the stronger bond? and it would be sn2 reaction? i'm i on the right track?

chem
List the experimental conditions that favor Sn1 reactions, and those that favor Sn2 reactions.

chem
(R)-(+)- limonene has a boiling point of 176 C. What made it possible to steam distill it at 100C? - is it because you could have different weights of each one?

Chem
How would you expect the following series of compounds to compare in behavior in teh two tests(SN1 vs. SN2)? CH3CH=CHCH2Br (1-bromo-2-butene) CH3-C=CHCH3 l Br CH3CH2CH2Br (1-bromopropane) I know primary alkyl halides like 1-bromopropane favor SN2 reactions and tertiary alkyl h...

math
Using the table (ADBC)= 8 (DACB)=5 (BADC)=3 (BDCA)=1 (DCAB)=2 (it is supposed to be a table but the table won't paste correctly). Deter mine: a) deter mine the winner using the Borda count b) deter mine the winner using the Hare method? What round did you find an answer? E...

math
Sorry that did not come out good. Let me try again. In voting of 4 candidates, the outcomes are recorded as: (ADBC)=8 (DACB)=5 (BADC)=3 (BDCA)=1 and (DCAB)=2. It is supposed to be a table but it didn't copy. Using this table, determine: a)what is the total number of votes ...

math
(ADBC) (DACB) (BADC) (BDCA) (DCAB) 8 5 3 1 2 Using that table, determine: a) the total number of votes b) what does (ADBC) mean c) What the "8" mean d)how many votes will be necessary for a majority, why? is a)19 b) rank c) the number of votes d)?

chem
An optical rotation study gives a result of alpha=+140 degrees. Suggest a dilution experiment to test whether the result is indeed +140 degrees, and not -220 degrees. -could polarimetry experiment be used to find the r and s isomer?

Chem
A sample of 2-butanol has a specific rotation of 3.25. Determine the % ee and molecular composition of this sample. The sepcific rotation of pure (+)-2-butanol is +13.0. is it (3.25/13.0)x100%= 25%... i'm a little confused on the molecular composition though.

Chem
What determines whether 2-bromobutane undergoes an Sn1 or an Sn2 reaction how would you favor SN2 formation?

Math
your mom

chemistry
we did an extraction of a mixture between neutral compound fluorene and an unknown carboxylic acid. Diethyl ether was used as the organic solvent while NaOH was used as the aqueous solvent. After extracting the unknown acid we also had to extract the neutral compound and to do...

chemistry
what experimental difficulty would you encounter if you had neglected to include a drying step before evaporating the ether solution of the neutral organic compound? Water was added to the organic solvent ,but a drying agent wasn't added. So would the difficulty be a separ...

chemistry
Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemtp at solution volume of oxygen= .209476*50L=10.5L How do i go from volume of ...

chemistry
Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemt at a solution: m = dv = 64.6 g of air moles silver =28.35/108=0.26 moles of...

chemistry
A sample of acid (C,H,O) massing 1.000 g burns to give 1.466 g of carbon dioxide and 0.6001 g of water. The molecular mass is approximately 120 g/mol. Calculate the molecular formula of the acid

Chem
What experimental difficulty would you encounter if you had neglected to include a drying step before evaporating the ether solution of fluorene?

Chemistry
how do u draw the lewis structure of F3S-SF

Chemistry
What is the geometry of S2O82- its basically two SO4 molecules connected by the O-O bond

chem
A student carried out a simple distillastion on a compound known to boil at 124 C and reported an observed boiling point of 116-117 C. Gas chromatographic analysis of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was accu...

chem
why would it be dangerous to heat a liquid in a distillation apparatus that had no vent or opening to the laboratory? - is this because the liquid will create vapor pressure and could cause a serious injury to a student?

chem
why do we add boiling chips or boiling stones before the distillation starts? Boiling chips should never be added to a hot solution!Why? i don't know what the answer is to the first one, but as for the second i think i have a clue. is it that the boiling chips will start a...

Math
Okay tell me if thease lines are parallel, perpendicular or neither. y=3x-2 y=1/3x+2

algebra
u solve the equation and the point should be the the end of the solution.

chem
Thank you soo much for all of your help!!!

chem
K2CO3 is an excellent drying agent for some classes of organic compounds. would it be a better choice for an acid (RCO2H)or an amine(RNH2)? why? i know this is RNH2. could it be explained that potassium carbonate itself is basic so it will make water and a salt if mixed with a...

chem
what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?

chem
what precautions should be observed when an aqueous sodium carbonate solution is used to extract an organic solution containing traces of acid? is it that aqueous sodium carbonate is extremely combustible, which can't be exposed to an open flame?

chem
a crude non acidic product mixture dissolved in diethyl ether contains acetic acid. describe an extraction procedure that could be used to remove the acetic acid.

physics
the period of a comet is 100 years. At ists closest approach(perihelion), it is 0.37 AU from the sun. What is the semi-major axis of the comet's orbit? How for does it get from the sun(what is its aphelion distance)?

physics
a 9.9*10^23 kg planet orbits a star in a circular orbit. The planet is 5.6 AU away from the star and has an orbital velocity of 32 km/s. What is the mass of the star. (1AU = 1.496*10^11m)

physics
The sun rotates around the center of the milky way galaxy at a distance of about 30,000 light years (1ly= 9.5*10^15m). if it takes about 200 million years to make one rotation, estimate the mass of our galaxy. Assume that the mass distribution of galaxy is concentrated mostly ...

Vocabularay
First of all, look at the definition in the dictionary: Main Entry: van·guard Pronunciation: 'van-"gärd also 'va[ng]- Function: noun Etymology: Middle English vantgard, from Middle French avant-garde, from Old French, from avant- fore- (from avant befo...

vocabulary
I dont understand the definition? i was asking for an example...

vocabulary
how do u use vanguard in a sentence?

Vocab
Does: Ger taut smile revealted the highg levels of stress she went through today make sense? for taut?

Vocab
Is she suddenly veered off the road to avoid a deer make sense?

Vocab
How do u use veer in a sentence?

Math - 9th grade
A company has a 22% profit margin, and has employee fraud of $220,000. Calculate the additional revenue to offset the lost income. Thanks.

Math
Thanks Damon. My computation was ($1,400,000 * 0.20) + ($1,400,000) = $1680000

Math
You are told that a company has a 20% profit margin, and the discovered fraud has caused $1,400,000 more needed revenue to cover the fraud. how much was stolen?

chem
Thanks alot. yeah I was a little confused as to which was more polar.

chem
The Rf value of compound A is .34 when the TLC plate is developed in hexane and .44 when the plate is developed in diethyl ether. Compound B has an Rf value of .42 in hexane and .60 in diethyl ether. Which solvent would be better for seperating a mixture of compounds A and B b...

chem
why does the addition of a salt (like sodium chloride) to the aqueous layer sometimes help break up an emulsion that forms in an extraction? - sorry about that last post

chem
when two layers form during an ether/water extraction, what would be an easy, convenient way to tell which layer is which if the densities were not available?

chem
well if it is wet then the solution will contain some impurities from the water or which ever other compound is added to the solution.

chem
what are some of the factors that affect melting point besides, impurities, pressure, and having a wet solution?

chem
Explain why ethanol and acetone are not suitable solvents for extracting organic compounds from aqueous solutions. does it have to do with their density?

Chem
so it would be lower right?

Chem
In the previous experiment, you recrystallized salicylic acid. If you were askedto take melting point of your crystals, would it be necessary to dry the salicylicacid crystals thoroughly first? What result would you expect from your melting point determination if you did not d...

6th grademath
this is a word problem:the country of hoffnemath is holding its presidential election this week. there three candidates(a,b,c,) and each eligible voter can vote for two of them. the candidate with the most total votes wins the election. here is a summary of the results: >ha...

chem
what is the typical melting range of a compound? I think .5 to 2.0 C is way tooo low.

chem
A student in 51LA conducts a melting point experiment with an unknown compound and observes a melting range of 122 – 129 °C. Is this a typical range for a melting point? If not, what range would be typical? Well for a pure compund the meliting range is from .5 to 2.0C...

Chem
Thank you. i understand this now.

Chem
the solubility of a compound is 59g per 100 mL in boiling methanol and 30g per 100mL in cold methanol, whereas its solubility in water is 7.2g per 100 mL at 95 C and .22g per 100mL at 2C. Which solvent would be better for recrystallization of the compound? Explain. Well this i...

stoichiometry
confused

English-Symbolism
I need examples of what the Moon has symbolized in literature, history, popular culture, legends, etc. I need to create a paragraph, so ideas will be appreciated.

Short story part 1
WHAT ARE CONVENTIONS?

language arts: reading
which element is especially significant in this passage?

French
ok thanks, I'm sure this'll help ^^

French
ok thanks ^^

French
no, no I'm not... sorry

French
Hey I was in french immersion last year, but now I'm not cuz I moved, and I'm wondering, is there a website so I can catch up on my french so I'll be able to at least UNDERSTAND french? thanks! ~jason~

history
dude, I'm sure you can figure this on out easily, just go to google or wikipedia.

biology
messages from nerve cells go to the ....... ........ ? please help

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