Questions Asked on
April 27, 2007

Chem 2
Propane (C3H8) burns in oxygen to produce carbon dioxide and water vapor. The balance equation for this reaction is C3H8 + 5O2 > 4H20 + 3CO2. What volume of carbon dioxide id produced when 2.8 L of oxygen are consumed? Here are the steps for solving
asked by Katie 
astronomy
A line in star's spectrum lies at 400.0 nanometers. In the laboratory, that same line lies at 400.2 nanometers. How fast is the star moving along the line of sight; that is, what is its radial velocity? Is it moving toward or away from us? Since the
asked by Sethi 
Chemistry
The complex ions of Zn2+ are colorless. Why? Keith, Natali, Cindy, Joel, or whoever, Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a
asked by keith 
Chemistry
What is the molality of a glucose solution prepared by dissolving 18.0g of glucose, C6H12O6 in 125g of water? A)0.000794 B)0.144 C)0.699 D)0.794 Molality is the number of moles of solute per kilogram of solvent. Because the density of water at 25°C is
asked by CIndy 
CHemistry
Which one of the following is expected to be the strongest Lewis acid? Fe, Fe+, Fe2+, Fe3+ Which do you think would accept electrons the easier? Fe(s) or Fe^+? Do that same kind of logic on the others one by one.
asked by Joel 
Chemistry
MF17083:For the following reaction find Kp at 25°C and indicate whether Kp should increase or decrease as the temperature rises. NH4HS(s) H2S(g) + NH3(g); DH° = 83.47 kJ and DG° = 17.5 kJ at 25°C.  A. B. C. D. E. F. Kp =  A. B. C. D. E. F. Kp
asked by Chris 
Social Studies
Thank you for using the Jiskha Homework Help Forum. Excellent choice: http://en.wikipedia.org/wiki/Mansa_Musa Mansa Musa commissioned great mosques to be built in Timbuktu, Mali's capital, and in other Mali cities. Under Musa's patronage, Muslim
asked by SraJMcGin 
Economics
2. The economy is in a recessionary gap, wages are inflexible downward, and there is complete crowding out. Which of the following is consistent with this state of affairs? a. The economy will soon selfregulate and produce Natural Real GDP. b.
asked by Sarah 
Economics(please check)
What might the changes brought about by the influence of interest groups affect the public? It can affect the public by inforcing their views on a subject. This, in turn, can affect public policy. For instance, if a group can convince the majority that
asked by Jon 
Chemistry
If an equal number of moles of the weak acid HOCN and the strong base KOH are added to water, the resulting solution will be acidic, basic or neutral? There is a complicated answer and a sensible answer. Both arrive at the same answer. But here is the
asked by Joel 
history
what was the source of conflict between japan and china from 1931 to 1945 It was initiated by the 1931 invasion of Manchuria by Japan, but you should look into the background around this time. It is often referred to as the "SinoJapanese War or conflict"
asked by kaydee 
Chemistry
I am really confused about polar and non polar molecules. I really don't understand how to know if something is polar or not. Or about bond polarity vs. molecular polarity (net dipole moment). Also, if it has a lone pair when you draw a lewis structure
asked by Gabriela 
Chemistry
a solution of 0.2113 g of water dissolv ed in 25g of a solvent freezes at 11.5 degrees celcius below the freezing point of the solvent. what is the Kf for the solvent? A)0.735 B)1.36 c)5.39 D)24.5 Help!!! delta T = Kf*molality Calculate molality = #mols
asked by natali 
chem
For the following reactions, name the BronstedLowry acids and bases. Then name the conjugate acid and bases. H3O+(aq) + CN(aq) HCN(aq) + H2O I'm really confused on this whole concept even thought it's not really difficult. I said: acids: H3O+ bases: CN
asked by Chris 
Please Teach Me More About Buddha!
How many different "Buddhas" are there in the Tibetan pantheon? How does this differ from Theravada Buddhism? http://en.wikipedia.org/wiki/Tibetan_Buddhism http://en.wikipedia.org/wiki/Theravada_Buddhism Let us know what you think. =) While you read
asked by Tyler 
statistics
the following data represents the percentages of family income allocated to groceries for a sample of 50 shoppers: percentage of family income #of shoppers 1019 6 2029 14 3039 16 4049 11 5059 3 1.calculate the value of mean 1.1 meadian percentage of
asked by mary 
Chemistry
the solubility of argon in water at 25 degrees celcius is 0.0150M. what is the henry's law constant of Ar if the partial pressure of argon is 0.00934 atm. A)0.000140 M/atm B)0.623 M/ atm C)1.61 M/atm D) 4.10 M/atm K=Pgas/Cgas Post your work if you get
asked by natali 
history
What are 5 ways that Jefferson and Republicans simplified Government? Which Republicans are you refering to? The DemocraticRepublican Party of Jefferson or the Republican Party of Lincoln? Jefferson Jefferson
asked by Mack 
algebra
Find the points of discontinuity and any holes. y=x^21/(x^2+3x+2) please and thank you y =(x^21)/((x+1)(x+2)) =(x1)/(x+2) we cancelled the (x+1)/(x+1) which is 0/0 for x=1 so in our simplified expression when x=1 y = 2 There is a "hole" at (1,2) in
asked by Harry 
Radiometric Dating
I have to answer the question 'The age of granite can be determined using radiometric dating. Explain the basis for the determination of a 238 UPb radiometric date of 1120 Ma for granite'. Can anyone suggest any sources to help me? Thanks!
asked by Bean 
record declaration and payment of cash dividend
How are entries recorded for the declaration and payment of cash dividends. A Corportation has 50,000 shares of common stock outstanding. It declares a $2 per share cash d ividend on November 1 to stockholders of record on d=december 1. The dividend is
asked by Wanda Floyd 
Social Studies
The journals of early travelers such as Ibn Battuta of Morocco, Zheng He of China, and Mansa Musa of Mali are examples of? http://www.sfusd.k12.ca.us/schwww/sch618/Ibn_Battuta/Ibn_Battuta_Rihla.html http://en.wikipedia.org/wiki/Zheng_He#Cultural_echoes
asked by Parth 
statistics
25% of the houses in a certain area have swimming pools. if 5 houses from this area are selected at random, what is the probability that no one has a swimming pool. 1.1 at least two have swimming pools. question2 an automatic boling machines fills cola
asked by mary 
operations management
project management can be best described as a set of related activities which have a definite starting point and end state, which pursues a defined goal and used a definite set of resources with reference to this discuss the project life cycle, the
asked by lineo 
Physics
for our lab, we had to fill a semicircle plastic dish (with a scratch on one side) with water and find the index of refraction of water by putting a pin on one side of the dish, looking through the water, and put a pin on the other side of the dish to
asked by JJ 
English
Do you mean Raisin in the Sun? (no "dry" in it) b cuz that's what I'm reading now and I have Langston Hughes poem Dream Deferred i can help you I am writing an essay on Raisin in the dry sun I have to write about a major theme in the book, and I have
asked by Anonymous 
SoCiAl(again)
Which Enlightenment writer expressed the idea that the relationship between government and the people it governs is a social contract? a Cincinnatus b John Locke c Cicero d Baron de Montesquieu could it be d? I've never even heard of
asked by brie 
stastics
a car dealer estimates that they sell two cars on average per week. they only have space in their showroom for 4 cars. if stock replacement cannot take place within a week, what is the probability assuming that weekly car sales follow a poisson
asked by mary 
physics
How does the width of the central region of a singleslit diffraction pattern change as the wavelength of the light increases? Look at the formula on this.
asked by anonymous 
business law
what does LLC means. I know the full form of it. I want to know your definition in simple english ( english is my 2nd language). I read the internet, i still don't understand it. This seems like a simple definition: "Business owners form a Limited
asked by praveen 
Chemistry
1.a radioscope which is neutron poor and very heavy is most likely to decay by? alpha , beta, electron capture, positron emission 2. When a 235U nucleus is struck by a thermal neutron, fission occurs often with the release of neutrons. If fission
asked by keith 
physics
Why is white light separated into a spectrum of colors when it is passed through a diffraction grating? The diffraction angle (theta) is given by n x (lambda) = d sine(theta) where lambda = wavelength theta = diffraction angle d = grating spacing n = order
asked by anonymous 
A.R.I.T.S.(please check Ron)
do you know the answer: 1. Does the name Alaiyo fit Beneatha? thanks... brie:'} Thank you for using the Jiskha Homework Help Forum. If you are still referring to "A Raisin in the Sun," Asagai calls Beneatha gAlaiyoh, which in Yoruba means gOne for
asked by brie 
math
Ihave to evalaute expressions can someone tell me which whay is the correct way. 15+ 20 ÷ 5 Is 15 + 4= 19 or 5 ÷ 5=9 2105 x 30 Is it 210150=60 or 205 x30=61590 Have you heard of BEDMAS? it shows the correct order of operation in arithmetic Bbrackets
asked by lacy 
Physics repost please help
The mass of a string is 6.0 x 10^3 kg, and it is stretched so the tension in it is 195 N. A transverse wave traveling on this string has a frequency of 260 Hz and a wavelength of 0.60 m. What is the length of the string? Isn't wavespeed=
asked by Mary 
English
Yes, A rasin in the sun by Lorraine Hansberry OK what is your question? Are you looking for a theme? do you have any questions that need to be answered, cuz I have a whole list of them for every act First off thank you for helping me! This the? What are
asked by Ron 
history
can some one check my work? i can where is it It's the one with the one that says order the sequence. Hi! brie. My work is on the 2nd page. Count the BLACK dots next to everybody's name until you find the 35th dot. Check that work. You'll see it next to my
asked by Mack 
Chemsitry
Which of the laws of thermodynamics provides a criterion for spontaneity? the zeroth law, the first law, the second law, and the third law? This site will give you zeroth, first, second, and third laws. You may need to scroll down a little but it on the
asked by Cindy 
Algebra 2: Radicals URGENT!!
Could some kind, saintly soul help me solve this problem? Simplify: 8w sqrt(48w^5)  x^2 sqrt(3xw^2) . . =8w(√16)(√3)(√w^4)(√w)  x^2(√3)(√x)(√w^2) =32w^3(√3w)  wx^2(√3x) not much of a "simplification" really 8w sqrt(16*3w^5)  x^2 w
asked by Maria 
physics
The entropy of a system is a measure of that system's disorder. Why is it appropriate to describe a laser as an entropyreducing device? I take some issue with the first sentence. It is better, in my view, to describe entropy as a measure of chaos. As
asked by anonymous 
English
Hello! i have to pick 3 news articles on a topic that i have chosen,and i have to write an essay to show "how these newspapers and or news magazines present representation of truth and reality designed to appeal to a particular audience.discuss, making
asked by Twinkle 
business
What do the terms race and ethnicity mean to you ? African Americans Why are these concepts important to the United States? The teacher apparently is asking for your opinions. However, having information will help you to develop your own opinions. Since
asked by Nene 
Science
1.what term best describes the measure of the increase in the concentration of a product per unit time? A)activation energy B)kinetics C)reaction rate D)reaction time 2. In the following equation, which of the reactants that is a bronstedlowry acid
asked by keith 
astronomy
The parallax of the red giant Betelguese is just barely measurable and has a value of about 0.005 arc seconds. What is its distance? Suppose the measurement is in error by + or 0.003 arc seconds. What limits can you set on its distance?
asked by Rohit 
physics
Laser light is commonly used to demonstrate doubleslit interference. Explain why laser light is preferable to light from other sources for observing interference. Doesn't double slit interference work best on monochromatic light? yea
asked by anonymous 
math
I need help with write the equation of the line which contains the point (0,negavtive 3), or written ars(0, 3) and whose slope is 4. if you want the equation in the form y = mx + b sub in 3 for y, 4 for m, and 0 for x for 3 = 4(0) + b so b = 3
asked by Don 
math
help please find the greatest common factor of 385 and 1365. 385=5x7x11 1365=3x5x7x13 now which factors do you see common? 5x7 or 35 Here is what I had 385=5x7x11 1365=3x5x7x13 5x7=35 is this correct yes, exactly how I showed you thank you yes your math is
asked by taylour 
history
what is the difference between Vietcong and Vietnamese? http://en.wikipedia.org/wiki/Viet_Cong Let us know what you think. =) I still don't get it. Thank you for using the Jiskha Homework Help Forum. Did you think of using a good dictionary? Main Entry:
asked by Anonymous 
operations management
explain the methods one would use in evaluating location alternatves. illustrate your answer with suitable examples There are many criteria that come into play, but all have to be judged in the context of life cycle costs, project mission objectives, and
asked by khoeli 
Science
I have an assignment that wants me to describe the topographical factors that intensify the air pollution. What does it mean by topographical mean? I thought it was a type of map? Please help me :) Rindi: That post was an impersonation. It has been
asked by Rindi 
astronomy
Arcturus is about half as hot as the Sun but is about 100 times more luminous. What is its radius campared to the sun.
asked by Rohit 
algebra
how do I convert 9/16 into a percent? Is this done differently in a algebric form? Divide 16 into 9.000, using the normal procedures of long division. This should give you 0.5625; then multiply the decimal by 100. This isn't algebra, by the way.
asked by help me understand 
chemistry
Which element is obtained primarily from the distillation of liquid air? N, He, P, Sb, Ar There are two answers to this question. http://en.wikipedia.org/wiki/Liquid_air
asked by keith 
SoCiAl
~The history of the U.S. can be seen as a struggle not always successful for rights. How can this theme be seen from the time of the American Revolution to the present?~ Does anyone have ideas about what I could write about besides stuff like the Civil
asked by brie 
math
what is 27^(1/2)? thanks. i don't have my calculator on me. well, that's the same as 1/(square root of 27).. so if you simplify it, you will end up with 1/(3square root of 3).
asked by Me 
math
Money made for a sandwich shop was directly proportional to its advertising budget. When the owner spent $2000 a month on advertising, the revenue was $120,000. If the revenue is now $180,000, how much is the owner spending on advertising? 120,000 simplest
asked by Amanda 
Science
I need to identify ways to reduce forms of pollution that my classmate put in their paper. Iron sulfide and coal seam was mentioned and how they react when exposed to air and water in the mining process, as well as form a mix of acid, sulfates, and metals
asked by Mike 
algebra
Solve the system by graphing. x + y = 4 –x + y = 2 confused where do i start do i need to solve for x and find points I'll bet that after doing a few like this you would be able to do this one in your head. just add then up. The x's will cancel and you
asked by TAMMY 
ENGLISH Literature
In A "Room of One's own" Virgina Woolf think it would have been impossible for a woman of Shakespeare time to have written plays of the level of Shakespear's play why? Virgina believe that women minority status and lack of privacy are socieconomic factors
asked by DANIELLE 
Cultural Diversity
Describe the role civil disobedience played in the Civil Rights Movement. http://www.google.com/search?q=civil+disobedience&rls=com.microsoft:enus:IESearchBox&ie=UTF8&oe=UTF8&sourceid=ie7&rlz=1I7SUNA Dr. King employed many civil disobedience ideas,
asked by Mary 
math
yes i need some tips on learning my times tables, mutiplcation please help,i'm in the 3rd grade thanks SAVANNAH Savannah. It is not very safe practice to post your full real name on the internet. Discuss this with your mom. Thanks. I recommmend you make
asked by savannah pitchford 
astronomy
Two stars in a binary system are determined from their position on the HR diagram and the massluminiosity relation to have a combined mass of 8 M. Their orbital period, P, is 1 year. What is their orbital seperation, a?
asked by Sethi 
SoCiAl
1. How were British troops able to surprise the French at Quebec? a climbing the walls before dawn b storming the gates c rowing into the seaport d climbing a steep cliff is it a or b??? 2. Which statement BEST describes the mood of the Continental
asked by brie 
math word problems
The sum of two numbers is 69. The second is 9 more than 4 times the first. What are the two numbers? would the equation i have be right 4x+y+9=69 4*15+0+9=69 60+9=69 No. Let the two numbers be x and y, with x the smaller number. x + y = 69 y = 4x + 9 5x +
asked by TAMMY 
history
Should the United States have supported the Contras? http://en.wikipedia.org/wiki/Contras Your question is an opinion question. Your teacher undoubtedly wants to know what YOU think about this issue. =)
asked by Anonymous 
math
What was the percentage increase in motor vehicle production in countries outside the United States from 1950 – 1997? 1950 10,577 1997 53,463 I'm trying to figure out the percentages of population increases between different countries at different
asked by Sissy 
history
What was the name of the sturdy vehicle used to trasport westward bound pioneers and their possessions? covered or "Calistoga" wagon. This type of wagon was also used... for carrying freight. http://en.wikipedia.org/wiki/Conestoga_wagon
asked by Mack 
claculus
graph Y=log3(x+1) graph Y
asked by Anonymous 
Physics
A wave traveling in the +x direction has an amplitude of 0.45 m, a speed of 6.1 m/s, and a frequency of 16 Hz. Write the equation of the wave in the form given by either Equation 16.3 or 16.4. (Answer in terms of t and x. Assume standard units.) You have
asked by Mary 
european history
hi. I was wondering if this is a good concrete detail. After the fall of the Soviet Union, the leaders of 11 of the 15 constituent republics of the Soviet Union met in AlmaAta, Kazakhstan, and signed the Charter of the Commonwealth of Independent States,
asked by Anonymous 
statistics
a training manager wants to know if there is a link between the hours spent by particular category of employeee in training and their productivity on the job. a ssmple of 10 employee files was randomly selected and the following data extracted: employee
asked by mary 
Physics
A recording engineer works in a soundproofed room that is 47.5 dB quieter than the outside. If the sound intensity in the room is 1.40 x 10^10 W/m2, what is the intensity outside? 47.5=10log( 1.40 x 10^10/Io divid each side by ten, then the antilog of
asked by Mary 
Chemistry
The Boltzman formula is S=k In W. A perfect crystal has a molar entropy of 0 at absolute zero because. W=O W=1 W=Na k=1 K=r/Na Why don't you try substituting W = 0 and W = 1, take the ln and see what you get.
asked by Cindy 
Math
Posted by Lance on Friday, April 27, 2007 at 9:47pm in response to math. please give us one set of numbers so we can work an example for you. What was the percentage increase in motor vehicle production in countries outside the United States from 1950 –
asked by Sissy 
history
The precedent that Marbury v. Madison set was a lawsuit right? http://en.wikipedia.org/wiki/Marbury_v._Madison
asked by Mack 
Math HELP!! FAST!!
Can someone help me solve this and write the answer in simplified radical form? (z  5)^3 + 32 = 0 Oh, solve for "z"... obviously. . . z5 = (32)^(1/3) z5 = 8^1/3) (4)^(1/3) z = 5  2(4)^(1/3) or 5  2cuberoot(4) Thanks!!! But one other question, it's
asked by Namine 
geology
if gabbro cut across sandstone and schist and schist is the oldest meaning the bottom layer of sediment would the gabbro be the youngest layer im getting really mixed up ive searched on the web for a diagrame but they show intrusions of all kinds i need
asked by jane 
math word problems
The sum of two numbers is 69. The second is 9 more than 4 times the first. What are the two numbers? would the equation i have be right 4x+y+9=69 4*15+0+9=69 60+9=69 couldn't it also be: 4x+y+9=69 4*14+4+9=69?
asked by TAMMY 
MATH!!!
CAN SOMEBODY PLEASE HELP ME WITH A CALCULATOR AND TELL ME WHAT 27^(1/2) IS? THAT READS "27 TO THE NEGATIVE ONE HALF". THANK U! enter 27 press the y^x or x^y key, whichever you have enter (1/2 +/ ) press = to get .19245
asked by Me 
social studies
What were the mummyshaped figures that worked in the afterlife's fields for the mumy? http://en.wikipedia.org/wiki/Shabti
asked by Eric S.