Sunday
April 20, 2014

# Posts by Josh

Total # Posts: 1,398

language
thanks! =)

language
hi, im doing a project for my language class. can anyone please tell me what is the first line on page 3 in the book curious george goes to a chocolate factory? thanks

Biochemistry
The following data describe the binding of oxygen to human myoglobin at 37oC. P02 (mm Hg) = 0.5 1 2 3 4 Theta = .161 .277 .434 .535 .605 P02 (mm Hg) = 6 8 12 20 Theta = .697 .754 .821 .885 From these data, estimate: a). P50 b) the fraction saturation of myoglobin at 30 mm, the...

math
a) 1/4 b) 25

accelerated math
just plug ti into ur calculator (32/4)x(31/4)

percalculus
i need like a copy of the ch 2 review for my book

Mathematics 1
divide 225 by 5 then that gives u 1/5 witch is how much u need

Biology
Has anyone done this experiment before? I need help with the final results. What would happen when I place 2 mL of hydrogen peroxide into 5 test tube, add manganese dioxide powder to the first one, then add sand to the second one, liver to the third one, and ground liver to th...

biology
I have another experiment that I am not clear about the results. Any help? Put water, hydrogen proxide, and manganese dioxide powder in test tube, see what happens. Then put sand in the mixture. Results? Then,put liver in it. What happens? Thanks for helping.

biology
Subjects Art Business Computers English Foreign Languages Health Home Economics Mathematics Music Physical Education Science Social Studies Features Contribute Download Experts Forum Job Openings Homework Tips Libraries.Jiskha Link to Us Reference School Supplies Search Homew...

biology
I have another experiment that I am not clear about the results. Any help? Put water and manganese dioxide powder in test tube, see what happens. Then put sand in the mixture. Results? Then,put liver in it. What happens? Thanks for helping.

biology
Thank you very much. I have tried it, and wanted to know if others had gotten the same results.

biology
What will happen when you mix saliva, water, gelatin? Then, mix starch, water, iodine?

Lincoln School
what is a polygon?

science
i have to do a homework assignment on how the earths orbit and tilt are causing global warming and i cant find anything but greenhouse effect please help. i gotta turn this in tomarrow

math
what is 8.9 times 3.87

Chemistry
Thanks christina, for all your help. Also, in case you check, 12.6 / 14.26 = 88%.

Chemistry
0.0626(1 / 1) = 0.0626, then 0.0626(1 / 227.78) = 0.00027 is the theoretical yield? (227.78 is the molec weight?)

Chemistry
And the limiting reactant is CuSO4 since I have enough NH3?

Chemistry
So 0.0626(4 / 1) = 0.2504 mole NH3 and 1.76(1 / 4) = 0.44 mole of CuSO4?

Chemistry
And the limiting reactant is CuSO4?

Chemistry
So I have 10/159.62 = 0.062 moles, and 30/17.034 = 1.761 moles?

Chemistry
Ok, well, I have 1 mole of CuSO4 and 4 moles of NH3, correct?

Chemistry
Uh, christina, you just told me how to find the limiting reactant, not the theoretical yield.

Chemistry
Ok, I will. Also, could someone tell me how to find the theoretical yield, since I'm apparently doing it wrong for some reason.

Chemistry
Ok. For the theoretical yield I added up the atomic masses for CuSO4 + 4 NH3. Cu (12.01) + S(32.07) + O4(64.00) + (NH3(17.04) * 4 = 68.16) = 176.24. Am I finding the theoretical yield the wrong way?

Chemistry
I have a problem that has been driving me crazy trying to solve, and I was wondering if someone could help. The problem is this: "Given the reaction: CuSO4 + 4 NH3 ----> Cu(NH3)4SO4, if 10 grams of CuSO4 reacts with 30 grams of NH3, what is the theoretical yield of Cu(...

Chemistry
What I mean to say is I add up the atomic masses of CuSO4 + 4 NH3 and get the theoretical yield of 176.24. Or am I finding it wrong?

Chemistry
I add up the atomic masses and get the theoretical yield, it's finding the limiting reactant that is getting to me.

Chemistry
I have a problem that has been driving me crazy trying to solve, and I was wondering if someone could help. The problem is this: "Given the reaction: CuSO4 + 4 NH3 ----> Cu(NH3)4SO4, if 10 grams of CuSO4 reacts with 30 grams of NH3, what is the theoretical yield of Cu(...

Math
how many centimeters is in a meter

Calculus - Hydrostatic Pressure

economy
total cost is equal to what? It would be easy to read your brief question out of context. So, a brief answer to your brief question: Generally speaking, total cost is the sum of fixed costs and variable costs. Do you have a specific problem you are trying to solve?

science
Im confused on what the carbon cycle is. can I get a somewhat in depth definition? http://images.google.com/images?q=carbon+cycle&hl=en&ie=UTF-8&um=1&sa=X&oi=images&ct=title http://www.cotf.edu/ete/modules/carbon/efcarbon.html http://users.rcn.com/jkimball.ma.ultranet/BiologyP...

Math
2/3 4/10/ 3/12

Physics- really fun!
who cares

chemistry
[HNO2] = .0410 M [NaNO2] = .0250 mol / .250 L = .100 M [H+] = Ka x [HA (weak acid)] / [A- (conj. base)] Ka = 6.0 x 10^-4 (a given constant) [H+] = (6.0 x 10^-4) x [.041]/[.100] = 2.5 x 10^-4 M. pH = -Log[H+] -- pH = -log[2.5 x 10^-4] pH = 3.61

Math
I need to make one graph showing changes in population for deer and wolves. I'm stuck because the deer scale would go by 500's. but the wolves are very small and would go by 2's! I have no idea how i can make my y-axis of my graph! any ideas? Two options really. 1....

sciencie
hey i have a question what are the two requirements of mater and can matter exist at 0 kelvin Didn't I answer this before? What do you mean by requirements? like what does it need like mass volume like what does it need like mass volume like what does it need like mass volume

sciencie
hey i have a question what are the two requirements of mater and can matter exist at 0 kelvin yes, matter exists at 0 K, it's just really cold.

spelling
need a tongue twister out of these words stitch,switch,speech,stretch,scratch During my speech, I wanted to stretch to reach the switch to scratch the itchy stitch. <G> Say that three times really fast.

science
Posted by Josh on Saturday, March 17, 2007 at 10:58pm. How many grams of hydrochloric acid are required to react completely with 4.30g of zinc? How many molecules of gas will be produced? For Further Reading science - DrBob222, Saturday, March 17, 2007 at 11:07pm 1. Write the ...

science
How many grams of hydrochloric acid are required to react completely with 4.30g of zinc? How many molecules of gas will be produced? 1. Write the balanced chemical equation. Zn + 2HCl ==> ZnCl2 + H2 2. Convert grams Zn to mols. mols = grams/atomic mass Zn. 3. Using the bala...

english
What is the correct punctuation for this sentence? Free of the restrictions of the real world,her characters reveal theirselves like they truly are. That punctuation is correct. Although the punctuation is correct, there are errors in the sentence. It should read this way: Fre...

Social Studies
Could anyone tell me 2 different colonial governments before America declared its independence. Thanks Each of the 13 colonies had its own government before the American independence.

greek mythology
1.All the following were writers of ancient Greek plays and poetry exept a.Homer b.Sophocles c.Joseph Campbell 2.Chaos gave birth to the following exept a.Uranus(heaven) b.Tartarus(under earth) c.Gaea(earth) 3.Gaea gave birth to the following exept a.mountains b.Pontus(sea) c....

english
if i called my boat "the hurcules,"would that be an allusion? Please tell us why you're calling your boat "the hurcules." Do you mean Hercules? i dont know why its a question i got but pretty sure its the Hurcules from mythology http://en.wikipedia.org/...

english
is the connotation of "mother" positive? Do you get good feelings from the use of the word or not? ??

english
is the connotation of "rose" positive? why? Which "rose" are you referring to? noun (the flower) verb (to get up) ?? noun The noun, rose, is generally positive, except in the Wars of the Roses. so what would i write for why its positive? A rose is a beautif...

spelling
words with consonant blends are easy to spell, because?

spelling
man: woman ::curved :?

History
I have been looking for the anwers to the follwing questions. I need to compare the following types of governments Democratic, Dictatorial and Parliamentary. I need to know the type of leader for each, economic system, and governing body. Thanks in advance. I am giving you lin...

math
how do you add and subtract and multiply and divide fractions? I searched Google under the key words "fractions add subtract multiply divide" to get these possible sources: http://www.wtamu.edu/academic/anns/mps/math/mathlab/beg_algebra/beg_alg_tut3_fractions.htm htt...

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

Genetics
Question: Calculate the frequency of the AA, Aa, and aa genotypes after one generation if the initial population consists of 0.2 AA, 0.6 Aa, and 0.2 aa. What I have done is: P = (0.2)+(0.5)(0.6)= 0.50 q = 1-p = 1 - 0.50 = 0.50 Can someone check my answer plz.

Microbio
Can someone check my answer please? How does the antibiotic penicillin kill bacterial cells? Is it more effective against gram positive or gram negative organisms? Explain. Most bacteria produce a cell wall that is composed partly of a macromolecule called peptidoglycan, made ...

Microbio
I have a hard time with this finding the concept for the below: plz help How and in what way does the input of organic matter, such as sewage, effect the O2 content of a river or stream? A pond or lake? Does the organic matter get digested by bacteria, microbes et al? Do they ...

music
What types of music did wind bands play ? Marches,church themes is only i can think of Wind ensambles have a huge repatuar in Classical music

music
Jazz and ragtime 3)______________ can occur between 2 instruments and can take place at any time Thanks Jazz can be done with 1 instrument, and is all the time. Ragtime requires two to interact, playing off one another.

MUSIC
3)_________ CAN OCCUR BETWEEN TWO INSTRUMENTS AND CAN TAKE PLACE AT ANY TIME. 4)A ___________ IS A REPEATED PHRASE. 4. coda is a repeated phrase, There is not enough information in #3 to help you. I would need to know the context. I think it might be harmony but there isnt eno...

music
the questions are based on the movie called Marsalis on Music Sousa to Satchmo 1)________ is accenting on unexpected beats. 2)what are three major sections of a wind band 1. syncopation is accenting on unexpected beats. 2. woodwind, brasswind and percussion

The lord of the flies-English
lets have babies

Poetry
I was introduced to the art of poetry two years ago, in the tenth grade, at high school. The first year, I was uninterested. This year, I have become absolutely infatuated with it, but unfortunately, even though I’ve grown to love the art, I hardly understand its techniqu...

Watershed?
I'm in FLVS also (SUCKSSSSSSSSS). took me an hr to find it.FINALLY@@@@@@@@

Watershed?
Your in FLVS arent you? lol

science
you live in the middle of a block that is square and one mile around. there is a stop sign on each corner. if your carcan only accelerate and brake at one meter per second per second, describe how you would get around the block in the fastest way.

word problem
A College sold Advance tickets to a play at \$4 per ticket. Anyone who attended and purchased a ticket at the door had to pay \$5 a ticket. A total of 480 people attended the play, and the revenue (earnings) from the ticket sales was\$ 2100. How many people bought tickets at the ...

Neon
what is normal phase

novel= death on the ice english
it was a really good book

Physics
A flat (unbanked) curve on a highway has a radius of 200 m. A car rounds the curve at a speed of 26.0 m/s. What is the minimum coefficient of friction that will prevent sliding? Our professor didn't even go over this, and it is way more complex than anything in the book. P...

Physics
An earth satellite moves in a circular orbit with an orbital speed of 5800 m/s. Find the time (expressed in seconds) of one revolution of the satellite. Find the radial acceleration of the satellite in its orbit. I think we need to know the radius of the earth and the satellit...

Trigonometry
I'm confused about how to get the answer of this question. If cosө=0.2, find the value of: cosө + cos(ө+2¡Ç) +sin(ө+4¡Ç) If anyone can help me with this, it would be greatly appreciated. Some of your symbols didn't tran...

Physics
Firemen are shooting a stream of water at a burning building. A high-pressure hose shoots out the water with a speed of 21.0 m/s as it leaves the hose nozzle. Once it leaves the hose, the water moves in projectile motion. The firemen adjust the angle of elevation of the hose u...

Physics
A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 24.0 m/s at an angle of 38.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. Got it.... 11.1 m Calcul...

Physics
An airplane is dropping bales of hay to cattle stranded in a blizzard on the Great Plains. The pilot releases the bales at 120 m above the level ground when the plane is flying at 80.0 m/s 55.0 degrees above the horizontal. How far in front of the cattle should the pilot relea...

Physics
I HONESTLY KNOW THAT THIS SITE IS NOT INTENDED TO JUST GIVE ANSWERS, BUT I HAVE NO IDEA HOW TO DO THIS PROBLEM WHATSOEVER, SO PLEASE MAKE NO COMMNENTS LIKE "post some work" OR ANYTHING LIKE THAT...IF I HAD WORK TO POST....I WOULDN'T REALLY NEED HELP... :) Thanks....

Physics
A man stands on the roof of a 19.0 m-tall building and throws a rock with a velocity of magnitude 24.0 m/s at an angle of 38.0 degrees above the horizontal. You can ignore air resistance. Calculate the maximum height above the roof reached by the rock. got it.... 11.1 m Calcul...

Physics
A river flows due south with a speed of 2.00 m/s. A man steers a motorboat across the river; his velocity relative to the water is 4.20 m/s due east. The river is 800 m wide. What is the magnitude of his velocity relative to the earth? got it....4.65 m/s What is the direction ...

Physics
A 10000 N car comes to a bridge during a storm and finds the bridge washed out. The 750 N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 21.6 m above the river, while the opposite side is a mere 3.60 m above the river...

Physics
A rocket blasts off vertically from rest on the launch pad with an upward acceleration of 2.30 m/s^2. At 10.0 s after blastoff, the engines suddenly fail, which means that the force they produce instantly stops. How high above the launch pad will the rocket eventually go? got ...

Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 m in diameter. Find the x component of this runner's average velocity between points A and B. (answer is 3.44 m/s) Find the y component of this runner's average velocity betw...

Physics
I really would like to give some work on this problem, but I have no idea how to do it! Please help! An airplane is dropping bales of hay to cattle stranded in a blizzard on the Great Plains. The pilot releases the bales at 120 m above the level ground when the plane is flying...

Physics
At the instant the traffic light turns green, an automobile that has been waiting at an intersection starts ahead with a constant acceleration of 2.50 m/s^2. At the same instant, a truck, traveling with a constant speed of 15.4 m/s, overtakes and passes the automobile. How far...

Physics
An athlete starts at point A and runs at a constant speed of 5.40 m/s around a round track 250 . in diameter. Find the x component of this runner's average velocity between points A and B. GOT THIS!!! 3.4 m/s Find the y component of this runner's average velocity betwe...

Physics
A 0.525 kg ball starts from rest and rolls down a hill with uniform acceleration, traveling 154 m during the second 10.0 s of its motion. How far did it roll during the first 4.00 of motion? I thought the answer was .2464 m, but it has been a couple of days, and I don't ev...

Physics
A rock is thrown vertically upward with a speed of 11.0 m/s from the roof of a building that is 70.0 m above the ground. Assume free fall. In how many seconds after being thrown does the rock strike the ground? GOT THIS!!!! t=5.07s What is the speed of the rock just before it ...

Science
Given seccant of thata = 3, use trigonometric identities to find the exact value of a- Cos thata b- tan squre of thata c csc (90 degree - thata) d- sin squre thata secTheta=3 but secTheta= 1/cosTheta solve for cosTheta Then, sin^2theta+ cos^2Theta=1 solve for sinTheta. then, T...

CellBiology
The number _____ and _____ sign are assigned to the first nucleotide of a transcriptional unit. a. 0, positive b. 1, negative c. 1, positive d. 0, no sign I would choose "d". Please check.

CellBiology
For membrane-associated proteins, the consensus sequence _______ is found on the inchoate (new) polypeptide and ______ to halt. a. pribnow, replication b. signal peptidase, transcription c. stop-transfer peptide, transcription d. stop-transfer sequence, translation e. stop-tra...

CellBiology
Enhancers and promoters are ______. In contrast, the heterodimer "TFIIA and TFIIB" are examples of __________. a. trans-acting elements, cis-acting factors b. cis-acting elements, trans-acting factors c. cis-activating factors, trans-acting elements d. trans-activati...

cellbio
Griffith's experiments along with Avery, MacLeod and McCarty helped to determine the transforming factors of Pneumococcus bacteria. Using heat-killed S-strain bacteria and one particular fraction of the cell lysates, they were able to demonstrate that _____ and not ______ ...

cell bio
The entire ATP apparatus is also called the ATP_______ I think it is Synthesis but not sure. ATP synthesis is a process. apparatus is a noun. you need a noun. ATP----------------? I can't seem to think of an appropriate word. Sometimes I seriously wopnder about the teacher...

Cell bio
The driving force of ATP synthesis at the location of the ATP synthesis complex is the _________________? I believe it is the matrix but am not sure and it is just a guess. please help. You are right, but I think they want mitochondria for an answer. If I was the teacher, I...

Bio
Insulin, antibodies, enzymes and progesterone are four of many molecules found in and around cells. Of these four__________ are/is not a protein. (Points: 4) a. antibodies b. insulin and antibodies c. antibodies and progesterone d. progesterone The reason you aren't receiv...

Biology
184 nucleotides are bonded in a linear array, forming a nucleic acid. How many molecules of water were formed as a result of this polymerization? (Points: 4) a. 183 b. 185 c. 92 d. 368 Hint: Nucleotides are linked together by dehydration synthesis to form polynucleotides. This...

Bio
One way to determine the concentration of protein in a solution is to perform a "protein assay". There are several assay kits on the market that one can use, but they all rely on the common paradigm that the aromatic amino acid residues of a protein combine with the ...

science
what is carbon cycling http://www.elmhurst.edu/~chm/vchembook/306carbon.html A thing made out of carbon. It is in a shape like a circle

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