Questions Asked on
January 30, 2007

Chemistry check
Could someone please just check my answers for this? I want to make sure I did these right. 1. A student reported the mass of ten glass beads as 2.507 +/ 0.015 g. What should the student report as the mass of one bead? Explain your answer. A: The student
asked by Bryant 
Chem II
2.5 mol NOCl(g) was placed in a 2.50 L reaction vessel at 400 degrees C. After equilibrium was established, it was found that 28% of the NOCl had dissociated according to the equation: 2NOCl(g)2NO(g)+Cl2(g) Calculate the equilibrium constant, Kc, for the
asked by Rick 
World History
what is the danger of Lenin's idea of party leadership? Lenins idea of party leadership was dangerous because in such a corrupt system, a party was terrible for the local environment. Many people would fight for the top leadership position. thanks. why did
asked by Dennis 
proverb
What is the meaning of this proverb?: "He who is afraid of the leaves must not go into the forest." Maybe it has the same meaning as she who fears rejection should never fall in love. Sometimes to reach our goals we have to overcome the fears in reaching
asked by Anonymous 
Physics... Please help me
A shell is shot with an inital velocity of 20m/s at an angle 60 degrees with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment whose speed is immediately after the explosion zero falls
asked by Brian 
Physics
100000W of power is delivered to the other side of a city by a pair of power lines with the voltage difference of 15000V. a) how much current flows in the lines? 100000/15000 = 6.9 A b) Each of the 2 lines has a resistance of 10 ohms. What is the voltage
asked by Belle 
unscramble
what is anldegn unscrambled Try England
asked by Anonymous 
Chemistry? Q's
Which of the following elements is chemically similar to Oxygen? a. flourine b. nitrogen c. Sulfur d. Hydrogen Which of the following is smallest? a. proton b. electron c. neutron d. nucleus The number "a million trillion" can also be written as 1015 True
asked by A student who needs help 
science
A shell is shot with an inital velocity of 20m/s at an angle 60 degrees with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment whose speed is immediately after the explosion zero falls
asked by Brian 
Physics... Please help me
A shell is shot with an inital velocity of 20m/s at an angle 60 degrees with the horizontal. At the top of the trajectory, the shell explodes into two fragments of equal mass. One fragment whose speed is immediately after the explosion zero falls
asked by Brian 
algebra3
can u solve the equation 1)1.2x= 2.3x2.2 2)[x4]= 15 3)[13+2x]= 5 1) 1.2x = 2.3x  2.2 2.2 = 2.3x  1.2x 2.2 = 1.1x x = 2 2) x  4 = 15 x = 15 + 4 x = 19 3) 13 + 2x = 5 2x = 5  13 2x = 8 x = 8/2 x = 4 it's all about getting the same variables to the
asked by WOLF 
Social Studies
Witch country brought basball to the central american countries? Who brought slaves to the central american countries? Witch Country brought The religan Roman Cathlic to the central american countries? witch country brought ecomic aid to the central
asked by Nate 
someone correct my work please? fun, fun chemistry
Okay. I'm very, very confused. The initial question is: predict the products of the electrolysis of a 1 mol/L solution sodium chloride. This is my work: The four different possible equations are: 2H2o + 2e > H2 + 2OH (V= 0.83) O2 + 4H+ + 4e
asked by Rienna 
physics
As you look out of your dorm window, a flower pot suddenly falls past. The pot is visible for a time t, and the vertical length of your window is L_w. Take down to be the positive direction, so that downward velocities are positive and the acceleration due
asked by nick 
Physics
A 0.165kg cue ball with an inital speed of 2 m/s bounces off the rail in a game of pool. For x and y axses located the counce reverses the y component of the ball's velocity but does not alter the x component(the angle is 30 in the negative x axis and it
asked by Brian 
chemistry
how do i calculate %of arsenic and oygen by mass and chem composition of the oxide that has been formed 0.702 sample of arsenicheated, material in boat, oxide of arsenic with mass of 0.927g please help %As = [(mass As)/mass oxide]x100=?? %O = [(mass
asked by mickey 
Science
The speed of sound in a gas depends upon the average speed of the gas molecules. Why is such a relationship reasonable? The greater the density of the medium ie gas pressure, temperature, the better sound traves through it. Why? because there are more
asked by Lacy 
odd and even functions
Using f is odd if f(x) = f(x) or even if f(x) = f(x) for all real x, how do I 1)show that a polynomial P(x) that contains only odd powers of x is an odd function 2)show that if a polynomial P(x) contains both odd and even powders of x, then it is
asked by Jen 
chemistry
what is the atomic number of ununhexium and the full symbol is this a transitional element that is a metal and what is its highest hydride and highest fluoride of ununhexium thanks What is known about Uuh can be found here. Look for element number 116. Go
asked by mickey 
chemistry
what evidence supports the clarification that H2Se 03 is an acid and how do i identify the positive ions present inthe aqueous solution I am a little confused by the word "clarification" in your question. What evidence do you have? Could you measure the pH
asked by mickey 
mathPLEASE HELP ME!
# of words: 36 72 108 144 180 216 # of sec: 10 20 30 40 50 60 PLEASE HELP ME!!!!!!!
asked by jennie 
Science
Does increasing the frequency of a wave also increase its wavelength? If not, how are these quantities related? high frequency. low wavelength That answer may be confusing. A high frequency has a short wavelength; i.e., 14 MHz is about 40 meters. 28 MHz is
asked by Tammy 
Chemistry
Why are combustion reactions always exothermic? Is it just because it gives off heat? Thanks ahead of time Exothermic MEANS it gives off heat; therefore, I don't think that can be a reason. Think of wood burning. Magnesium strips burning. A wax cancle
asked by Mercedes 
research paper
Does anyone know what arguments could come from nuclear energy? An argument for nuclear energy is that it is more efficient than coal or gas for generating electricity. There are more reasons in favor of it, of course. An argument against it is the
asked by sam 
chemistry
write a balanced chemical equation for the reaction of aluminium selenide with water (to include physical states of reactants and products)to include brief decription of the strategy used and the sequence of partially balanced equations needed to reach
asked by rikki 
Social Studies
Why did Thutmose III try to get rid of everything that had to do with Queen Hatshepsut? Because he envied her and hated her and stuff, and because he wanted to be the only ruler, not to rule aside Queen Hatshepsut. I looked it up in a book. You should too!
asked by Julia 
Science
Under what circumstances, if any, will a converging lens form an inverted image of a real object? Under what circumstances, if any, will a diverging lens forms an erect image of a real object?
asked by Mae 
criminology
Can someone help me think of physical, environmental, and social factors that might affect criminal behavior. Any websites would be greatly appreciated.
asked by jeff 
Physics
A 75 kg man on a 39kg cart traveling at a speed of 2.3 m/s. He jumps off with zero horizontal speed realative to the ground. What is the resulting change in the speed of the cart? I tried using m1v1=m2v2 but that didn't work out since I was expose to get
asked by Brian 
math
Use the table to estimate how long it took Stella Pajunas to type 100 words # of words: 36 72 108 144 180 216 # of sec: 10 20 30 40 50 60 Its a nice linear line, so no statistical estimation technique required. For every 10 seconds, Stella can type 36
asked by Susie 
Math(Count Iblis PLease help me again)
5y^8  125 *you have to factor completley 5y^8  125 = 5(y^8  25) = 5(y^4 + 5)(y^4  5)= 5(y^4 + 5)[y^2 + sqrt(5)][y^2  sqrt(5)]= 5(y^4 + 5)[y^2 + sqrt(5)]* [y + 5^(1/4)][y  5^(1/4)] good work, good explaination
asked by Margie 
Geog
How many minutes does it take for the earh to rotate through 1 degree of longitude? The earth has 360 degrees of longitude. It rotates every 24 hours. There are 1440 minutes in a day. Divide 1440 by 360 to get your answer.
asked by mike 
College Algebra
Goemetry Find the area of a triangle whose altitude is 7 ft & whose base is 22 ft. Complete each sentence. Can anyone help me.... Isn't the area of a triangle 1/2 the base times the altitude?
asked by Ana  confused 
Bus.Law
Why are formal legal rules alone not an aclequate ethics system for business? Society is based on ethics systems as well as formal rules. This applies to businesses and individuals. In the long run, a business is hurt and loses customers if it's shown to
asked by mike 
factoring
a^22ab15b^2 a^22ab15b^2 = (a  b)^2  16 b^2 = [a  b + 4 b]* [a  b  4b] = (a + 3b)*(a  5b)
asked by lelani 
Chemical
Which is the theoretical effusion of NH3 and the theoretical effusion of HCl? The rate of effusion is proportional to 1/(square root of the molar mass).
asked by Geisha 
Exploring Quadratic Graphs
ok, I totally did not get this question at all. Complete each statement. Assume the variable a does not equal 0. a. The graph of y=ax^2+c intersects the xaxis in two places when ______. b. The graph of y=ax^2+c does not intersect the xaxis when ______.
asked by Emily 
reading
does anyone know the climax of Stuck in Neutral by Terry Trueman? please help me! http://www.amazon.com/gp/product/customerreviews/0064472132/ref=cm_cr_dp_pt/10358966632989406?ie=UTF8&n=283155&s=books
asked by Ginger 
Equivalent Fractions
what or how do you get at least one equivalent fraction 1/4 = ___ what about 30/120 ? I don't know.. How did you get that? Multiply the numerator and denominator by the same number. 1/4 = 2/8 = 3/12 = 4/16 = 5/20 If you multiply the numerator and
asked by Joseph 
Chemistry
Can someone explain the different gas laws to me(Boyle's, Charles, and Avogadros)Thanks There are links to each in this article http://en.wikipedia.org/wiki/Gas_laws
asked by Chrissy 
humanities
give examoples of cultural valves in art form http://www.cicwildlife.org/index.php?id=77 http://www.theartwork.com/multicultural.html
asked by Anonymous 
chemistry check
What is the sum of the coefficients (including “1”) of the following reaction? Sodium sulfate + calcium hydroxide ??? Na2SO4 + Ca (OH)2 > 2 NaOH + CaSO4 a. 4 b. 5 c. 6 d. 7 e. 9 the sum of coefficients are = 1 + 1 + 2 +1 = 5 Goodness, you add the
asked by key 
internationa business
I need to know where can I find information about nike organization. Are Nike production facilites centralized or edcentralized?, Does Nike standardize products or adapt them for different markets?, Thank you for using the Jiskha Homework Help Forum. Here
asked by dre 
A Tale of Two Cities
In Cahpter 3 " A disappointment" What was the evidence that was in Darnay's handwriting? I really recommend that you read that chapter, in fact I recommend reading the whole book.... it is GOOD! Here is a site that will help you.
asked by Gina 
Science
What types of waves can be refracted? Under what circumstances does refraction occur? When a wave travels from one medium to another in which the refractive index is different. Air to glass, for example, or glass to air. air to water or water to air.
asked by Tindy 
Math 4 (Count Ibilis)
Solve by factoring: One of the solutions to the quadratic equation 2x^2  9x – 5 is 1/2. What is the other solution? 2x^2  9x – 5 = (2x + 1)(x  5) So, it's x = 5.
asked by Margie 
Science
I don't noe ne thng about fluids. HELp..my test is in two days If you repost your question and spell the words right, I'll help you. lol pwnT
asked by Sana 
Geog
if each time zone is 15 degrees in width who many time zones are there around the earth? Simple math problem. There are 360 degrees around the world. Divide 360 by 15.
asked by mike 
Geog
why does each time zone extend 7 1/2 degrees oneach side of central meridian rather than extending from 0 degrees to 15 degree? Please tell us what you think, and we'll be glad to critique your answer. i have no idea ..
asked by mike 
algebra
In most businesses, increasing prices of products can negatively impact the number of customers. A bus company in a small town has an average number of riders of 800 per day. The bus company charges $2.25 for a ride. They conducted a survey of their
asked by Anonymous 
physics/biology
Determine the number of uncompensated ions (both total number and as a percentage of the bulk ions) required to establish a charge of 100mV across a membrane of a spherical cell that is 25 ƒÊm in diameter. Assume that the total number of ions inside and
asked by Ann 
math/What is a interval in math terms?
doe sanyone know what a interval is in math terms? i need the real definition and it is hard and i can not find it anywhere? can anyone help me? thanks,you rule Kayla an interval is "a mathmatical expression of 'betweeness' ab or a
asked by Kayla 
dr.bob222
when you get a small little chance can you check my math in last message i posted. thank you. I read the post earlier but didn't post a response because I was confused by the c in the formula.
asked by Jasmine20 
Math2
Factor: 2xy – xz + 2wy – wz (x+w)(2yz)
asked by Margie 
algebra3
can u graph the inequality in a coordinate plane 1)y>3x1 2)x>2
asked by WOLF 
History
Can one explain to me what was the outcome of the Greeks revolt against the Ottoman Turks.. and the outcome of when charles X tries to set up an absloute monarchy in France.. Thanks in Advance.... Thank you for using the Jiskha Homework Help Forum. The
asked by Bryan 
Geog
In one minute of time how far does the earth rotate in minutes or seconds of longitude? Please use the answer I posted in my last answer to calculate this answer.
asked by mike 
Geography
If you left New Orleans ( 30 degrees N, 90 degrees W) at 4:00 am on Friday Dec. 31, and traveled for 12 hours before arriving in Baku, Azerbaijan ( 40 degrees N, 30 degrees E) , at what time and on what day would you arrive in Baku? ( show work pleas)
asked by matt 
SPORTS
What does these colleges have in common... Samford, Georgia, Marshall, Illinois State, Murray State, Cincinnati, UTC besides the same sports? Your question is unclear. Stanford and the others may all be higher education insitutions in the United States. I
asked by Cindy 
Chemistry
Hello, please could someone help? Will calcium chloride (CaCl) granules be a suitable drying agent for drying hydrogen selenide (H2Se) gas? Or, will the calcium chloride granules also absorb the H2 from the H2Se? Thank you. Calcium chloride is CaCl2. It is
asked by Junior 
algebra
7 y _____ Y  7 Does this factor to 1???? Assuming that the two Ys (y and Y) indicate the same unknown, it would be 1. (7  Y)/(Y  7) = 1(Y  7)/(Y  7) The (Y  7) terms cancel each other out, leaving 1. I hope this helps. Thanks for asking.
asked by deborah 
English
Literature during this period (18401860 "The American Renaissance) is permeated by the doctrine of individualism. Explore the expression of individualism in the work of one of these figures: Ralph Waldo Emerson, Henry David Thoreau, or Emily Dickinson. is
asked by Missa 
Sciencemixtures
How do you separate sand from salt in a homogeneous expeiriment? Add water to dissolve the NaCl, pour through a filter paper. The sand will be in the paper. Dry to recover the sand. Evaporate the water separately to recover the NaCl.
asked by ashley 
Modern World History
Can some one explain to me the ouctome of this action dealing with ethe uprising in Europe. Action: French citizens' armies with their revolution for liberty and equality. Who fought in the French and Indian War?
asked by Bryan 
ethics
Need Major differences and commonalities apparent between Mexican Americans and Puerto Ricans Thank you for using the Jiskha Homework Help Forum. The first site will give you information about the different areas of the U.S. where they tend to live:
asked by sue 
math
What polygon has 20 diagonals?I don't know how to figur this out. THANKS!!!! A rectangle (4 sides) has 2 diagonals. A hexagon (6 sides) has 3 diagonals. An octagon (8 sides) has 4 diagonals. A _____ (20 sides) has 20 diagonals.
asked by cole 
Langusage Arts
My 4th grades needs HELP with (Show the possession of the subject.)the car of the principals The principal's car principal's shows that the car belongs to the principal.
asked by J.R.G. 
Chemical
How i make a graphic about Pressure v/s 1/Volume? Make a table with two colums. Column 1 contains Pressure. Column 2 contains volume. P 1/V  Then place values of P and 1/V. Then plot those numbers. I can't draw it on the
asked by Geisha 
Geography
Explain the purpose of a key on a map The key lets you know what the symbols mean. For example a little tree may mean a state park. A picnic table and tent may mean a campgroung with a picnic area.
asked by cindy 
mathPLEASE HELP!!!!!
Use th etale to estimate how long it took Stella Pajunas to type 100 words # of words= 36 72 108 144 180 216 # of secs.= 10 20 30 40 50 60 You can see from the table that the relation is exactly linear. One word takes 10/36 seconds, 100 words takes 1000/36
asked by Samantha 
science
What is the phase of neon at room temperature? This will give you all the information you ever wanted about Ne. Click on element #10 http://www.webelements.com/
asked by T 
rhetoric
What is the role of rhetoric in influencing people's attitudes and beliefs? How can readers distinguish between prejudicial and nonprejudicial use of rhetorical devices? Please check out the following posts and links: Posted by Ms. Sue on Tuesday, June
asked by julie 
expressing as odd & even functions
Express P(x) = x^5 + 6 x^3  x^2  2x + 5 as the sum of an odd function and even function. Podd(x)=x^5 +6x^3 2x Peven(x)= x^2 + 5
asked by Jen 
math,correction
can someone correct this for me please. Directions: Evaluate each function for the value specified. f (x)=x^2+7c+10, f (2) so then this is what i did: f(2)=2^27(2)+10 = 4+14+10 = 28 so then that means that f(2) = 28 sorry the formula should read.
asked by Jasmine20 
Language Arts/ English
Henry Wadsworth Longfellow, James Russell Lowell, Oliver Wendall Holmes and John Greenleaf Whittier belong to the group known as the fireside poets. Your book states that "the fireside poets wrote for a family audience, usually on subjects of general
asked by Missa 
Help me!
What are the most significant similarities between the Chinese American and Japanese American (cultural) experiences? What are the differences? (Schaefer, 2006, p.352) Choose from any of the following topics when considering similarities and differences:
asked by Letitia 
algebra
Identify the period and amplitude of each function. y=3cosÈ y=2cos2t y=2cos1/2t
asked by Natasha 
Math 3
Solve by factoring: One of the solutions to the quadratic equation x^2  13x + 30 is 3. What is the other solution? Is it:(x+3) If 3 is a solution, then the quadratic contains a factor (x3). The other factor is thus (x10), and it follows that the other
asked by Margie 
Geography
A traveler leaves Lima, Peru ( approximately 12 degrees S. Lat. And 90 degrees W. long.) at 8:00 am on Tues. Oct. 3rd and travels for 14 hrs before arriving in Sydney, Australia ( approx. 34 degrees S and 150 degree E). what time and what day would the
asked by matt 
math,help
What does it mean to factor an algebraic expression into prime factors? Prime factors are factors that cannot be further factored. Do you know what a interval is in math terms? i need the definition yeah so what do you mean it should be put in help not
asked by jasmine20 
Conic Sections
How do you find the equation for this problem? Conic Center(1,3) directrix x =7 snd corresponding focus (3,2)
asked by Bob 
algebra
5k + 15 _________ k2  9 Does this facot to 5(K+3) _______ k^2 9 Is this right? Nope. You have to factor the denominator to (k+3)(k3) The numerator you factored should have been 5(k3), you missed a sign.
asked by deborah 
ethnics
What is a current issue between Native Americans and the federal government. What legislation is linked to the issue, and why you think there is a connection. http://search.fedstats.gov/cgibin/s.cgi?q=native+american You can look into many of these linked
asked by Anonymous 
algebra
help me use the number 'e' as a natural base. You have to be much more specific. This question cannot be answered, it is very general. Any number can be used as a base, including 10, commonly used in the US. Can you walk me through this problem:
asked by amanda 
Geometry
Find x in terms of y ezgeometry. com/pow/pictures/25.gif It would be helpful if the verticies had letters at the site you left: http://www.ezgeometry.com/pow/pictures/25.gif The two smaller triangles are similar to the larger one (the altitude y)
asked by Seth 
computers
what happens if the hotfix you are installing is older than the systemscurrently installed service pack?
asked by shaylkj 
chemistry
why is the molecular formula of oide of arsenic in its gaseous state is not neccessarialy the same as its empirical formula what does this mean and how do i do it Molecules are known to dimerize or trimerize. We actually don't know what the molecular
asked by donald 
social studies articles of confederation
what can the congress do http://www.google.com/search?q=articles+confederation+congress&rls=com.microsoft:enus:IESearchBox&ie=UTF8&oe=UTF8&sourceid=ie7 Lots of information here. =)
asked by christine 
rate law expressions
could anyone tell me a good website that teaches how to find rate law expressions? thank you!! I hope this helps. It will get you started, anyway. http://en.wikipedia.org/wiki/Rate_equation
asked by confusedstudent 
geometry
draw a diagram to explain how it is possible for 2 central angles to be congruent, yet their corresponding minor arcs are NOT congruent. Please help! thanks! (3z5)degrees (5z47)degrees Find the value of z and m
asked by marco 
algebra
6x +2 _____ 8 Reduce ??? Is it 2x+1 ____ 4 Am I doing this right? Correct.
asked by deborah 
PICASSO
I JUST READ SOMEWHERE THAT PABLO PICASSO WAS ALSO A WRITER. I THOUGHT HE WAS JUST A MODERNIST PAINTER AND SCULPTOR. DOES ANYONE KNOW IF ACTUALLY EVER WROTE ANYTHING OR WAS HE JUST AN ARTIST? http://www.csmonitor.com/2005/0318/p12s02alar.html
asked by JAYLEE 
chem
how is the oxide of arsenic worked out when its in its gas state please help im flumuxed Please clarify your question? What do you mean by "worked out? the question states determine the molecular formular of the oxide of arsenic when it is in its gaseous
asked by donald 
Math Help
3x^2 + 17x + 10 *I really don't get this but you have to factor completley. (3x+2)(x+5) thanks.  can you help me with my other problems.? I'll take a look. I'll have more time in about 2 hours from now. ok.  but I don't have that long can you try to help
asked by Margie 
life
what is boredom??? and why do i have it doing homework??? You can find the answer by tyoing my name in google :) The short answer is that you wouldn't need to do homework if you could download everything you need to know directly into your brain.
asked by sam 
math HELP PLEASE!!!!!
Use the table to estimate how long it took Stella Pajunas to type 100 words # of words: 36 72 108 144 180 216 # of sec: 10 20 30 40 50 60 it would take 27.2 seconds. youre welcome
asked by Aj 
geometric mean
what is the ngeometric mean of 4 and 4 by definition, sqrt (4*4) or 4 how do you find the geometrical mean of a right triangle?
asked by sam 
algebra
Reduc x^3  x^2 ___________ x^4 Is it x1 _____ x^2 Is this right? yes
asked by deborah 
algebra
8a + 8b _______ 12c + 12d factor to a + b _______ c + d Is this right? No, what happend to the 8/12 ? would it be 2 (4a + 4b) _____________ 6 (2c + 2d) Is this right??? No. what about ..lets see, 8/12 reduces to 2/3, so 2(a+b)/3(c+d)
asked by deborah 
English
Can a fable have gods that are directly involved with the plot of the story? Are all fables really short and not descriptive? Fable: A short moral story, often with supernatural or animal characters. http://www.onelook.com/?w=fable&ls=a Remember in the Old
asked by samantha 
sats
what are the topic the students are doing for their englsih sats rather than macbeth Whenever you have questions about AP tests and/or SATs, you can go to http://www.collegeboard.com and wander around until you find answers. I found this:
asked by laiba 
I THOUGHT THIS WAS A HELP SITE!
noone is helping.Please help me.  get a life. YOu posted the question 15 min ago. We don't just sit here waiting for questions.
asked by Margie 
chem please help
when the oxide of arsnic is heated it sublimes and becomes a gas at 650oc and a pressure of 690mmHg the 0.927g sample of the oxide has a volume of 194cm calculate the volume in cm3 that the sample would have at 0oc and 760mmHg(ie at STP)if it were to
asked by john 
math
what is the percent of 7 over 10 (7/10)x100=70% 7  10 or 70  100
asked by nick