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Questions Asked on February 12, 2009

For the reaction shown, compute the theoretical yield of product (in grams) for each of the following initial amounts of
1. 1 answer
2. asked by anonymous
3. 6,008 views
a remote controlled car's wheel accelerates at 22.4 rad/s^2. if the wheel begins with an angular speed of 10.8 rad/s what is the
1. 1 answer
2. asked by luke
3. 5,280 views
A student placed 10.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then
1. 1 answer
2. asked by anonymous
3. 3,661 views
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing
1. 11 answers
2. asked by Danielle
3. 3,579 views
a very loud train whistle has an acoustic power output of 100 W. if the sound energy spreads our spherically, what is the
1. 3 answers
2. asked by jaden
3. 2,778 views
identify the products when the following substances decompose:1) binary compoound 2) metallic hydroxide 3) metallic carbonate 4)
1. 2 answers
2. asked by Stephanie
3. 2,697 views
A 5-kg rock is lifted 2 meters in 5 seconds. How much work is done? How much power is done?
1. 4 answers
2. asked by Lindsey
3. 2,599 views
dy/dx = (y-1)^2 cosπxThere's a horizontal line with equation y=c that satisfies this differential equation. Find the value of
1. 1 answer
2. asked by JIM
3. 2,271 views
Ammonia has the formula NH3. Household ammonia is a dilute aqueous solution of NH3 . Aqueous ammonia is a base that can
1. 6 answers
2. asked by Chemistry
3. 2,232 views
Given the two reactions:5Fe2+(aq) + MnO4-(aq) + 8H+(aq) --> 5Fe3+ (aq) + Mn2+(aq) + 4H2O(l) 2MnO4-(aq) + 5C2O42-(aq) +16H+ -->
1. 4 answers
2. asked by Sam
3. 2,175 views
Fill in the brackets with a correct definite or indefinite article.1. Nosotros somos (los) estudiantes de Buenos Aires. 2. Ellos
1. 1 answer
2. asked by Larry
3. 2,145 views
need HELP!!which of the following exhibits parabolic motion a. stone thrown into a lake b. space shuttle orbiting Earth c. leaf
1. 3 answers
2. asked by y912f
3. 2,004 views
3.Empirical formula is C4H5N2O.Its molecular weight is 194.19g/mole.The "empirical formula weight is about 97.1g/mole.What is
1. 1 answer
2. asked by Cool Dom
3. 1,870 views
Every four years in the United States there is a presidential election, and after the election, nearly half the population
1. 2 answers
2. asked by dean
3. 1,848 views
when the temperature stays the same, the volume of the gas is inversely proportional to the pressure of the gas. If a balloon is
1. 5 answers
2. asked by tonya
3. 1,816 views
4.A compund is found to have(by mass)48.38% carbon,8.12% hydrogen and the rest oxygen.(What % is missing to make the sum 100 %?)
1. 1 answer
2. asked by Cool Dom
3. 1,333 views
please helpThere are six books in a stack, and each book weighs 5 N. The coefficient of static friction between the books is
1. 2 answers
2. asked by teamjakeward
3. 1,317 views
Write a system of inequalities to describe the shaded area of the graph.This is the question on my homework today that i just
1. 1 answer
2. asked by Katy
3. 1,299 views
Name a large bay east of maine?
1. 5 answers
2. asked by Anonymous
3. 1,295 views
Post your response to the following: What is one strength you see in th current U.S. health care system? What is one weakness
1. 3 answers
2. asked by jean
3. 1,260 views
What are the major differences between the contemporary criminal (adult) justice system and the juvenile justice system? Are the
1. 2 answers
2. asked by susan
3. 1,244 views
is iron (III) carbonate a solid or (aq)?
1. 1 answer
2. asked by Chopsticks
3. 1,234 views
How many grams of NaC2H3O2 (M=82.034 g mol-1) should be dissolved in 400 g of water to prepare a solution which is 11.28%
1. 1 answer
2. asked by Chris
3. 1,169 views
I am in a very tight situation. I am a grade 4 social studies teacher. In my classroom, I have students of mixed ability. Some
1. 5 answers
2. asked by Maria
3. 1,155 views
A drowsy cat spots a flowerpot that sails first up and then down past an open window. The pot was in view for a total of 0.37 s,
1. 1 answer
2. asked by Andrew
3. 1,127 views
It’s disgraceful that a member of the Elks Lodge would go out to fast food restaurants every night. The Elks believe in family
1. 6 answers
2. asked by christina
3. 1,084 views
What was the combined sales revenue in march for the parts and service devision of Jacks auto service.April 11,000.00- parts
1. 1 answer
2. asked by Domonique
3. 1,057 views
I have to make an ethnic dish to share with my class. The dish can be from any culture. I want to pick a country where the food
1. 4 answers
2. asked by Angie
3. 1,011 views
Multiple-Concept Example 3 provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus
1. 7 answers
2. asked by Sarah
3. 1,009 views
Two spherical objects are separated by a distance of 2.41 x 10-3 m. The objects are initially electrically neutral and are very
1. 3 answers
2. asked by Jordan
3. 1,001 views
Find the derivative of this function:y=sin(cosx) Any help would be appreciated.
1. 2 answers
2. asked by Anonymous
3. 996 views
Suppose that x = 2-t and y = 4t+7.a. If x=7, what is y? b. If x=-3, what is y? c. Find y in terms of x. I don't know how to
1. 4 answers
2. asked by Olivia
3. 989 views
For the reaction shown, compute the theoretical yield of product (in grams) for each of the following initial amounts of
1. 1 answer
2. asked by anonymous
3. 974 views
Sure, I’ve heard that it’s better to not eat cheeseburgers every day, but it’s extra protein and protein is good for you.
1. 3 answers
2. asked by chris
3. 973 views
please show me how to do this in steps.A track star in the long jump goes into the jump at 12 m/s and launches herself at
1. 1 answer
2. asked by teamjakeward
3. 936 views
I need help find website for these...that list signs to look for when children and adolescents are being abused, using drugs,
1. 1 answer
2. asked by troyer0269
3. 929 views
I've removed your post because it doesn't apply to the Jiskha forum. We have no way of reading your peer's posts on any Axia
1. 0 answers
2. asked by Ms. Sue
3. 895 views
is CH3CH2N or NO2 a lewis acid?
1. 4 answers
2. asked by Anonymous
3. 888 views
does anyone know where the yellow cow painting by Franz Marc i displayed?
1. 1 answer
2. asked by sophie
3. 879 views
If you could please check these and just let me know which ones are correct! also if you have any input on a better answer, or
1. 1 answer
2. asked by jeffery
3. 877 views
Having some trouble with articles.When would I use 'los/las' and 'unos/unas' Example: Rewrite these sentences changing the words
1. 1 answer
2. asked by Larry
3. 871 views
Two spherical objects are separated by a distance of 2.41 x 10-3 m. The objects are initially electrically neutral and are very
1. 3 answers
2. asked by Jordan
3. 869 views
G. William Domhoff's view of the power structure of the United States most closely resembles the analysis of which sociological
1. 1 answer
2. asked by dean
3. 867 views
how do you solve problems like :log3x-log5=1
1. 2 answers
2. asked by vanessa
3. 866 views
A drowsy cat spots a flowerpot that sails first up and then down past an open window. The pot was in view for a total of 0.37 s,
1. 1 answer
2. asked by Andrew
3. 859 views
If you have a gene pathway with three activities, say A, B and C, and you have a mutant where an area of the pathway is
1. 0 answers
2. asked by CM
3. 853 views
calculate the number of grams of nitrogen dioxide that are produced from 2 moles of nitric oxide2NO(g)+Osub2(g)---->2NOsub2(g)
1. 1 answer
2. asked by Sarah
3. 843 views
The density of a 22.0% by mass ethylene glycol (C2 H6 O2) solution in water is 1.03 .Find the molarity of the solution.
1. 1 answer
2. asked by HELP PLEASEEE
3. 842 views
how do you prepare a solution using the proper lab equipment(both from dry solid and a stock solution)i researched it but all i
1. 2 answers
2. asked by lyne
3. 826 views
Consider a .900 M Al(NO3)3 solution. This solution has a nitrate ion concentration of:
1. 2 answers
2. asked by Chris
3. 822 views
The chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists in analyzing
1. 1 answer
2. asked by Danielle
3. 809 views
a 16.2 L sample of CO(g) at 1.50 atm and 200.*C is combined with 15.39g of Fe2O3(s), How many moles of CO(g) are availabe for
1. 1 answer
2. asked by David
3. 793 views
Hi,Can any1 help with theses questions. I need to solve these because there will be similar questions on the midterm for me,
1. 4 answers
2. asked by ur class fella
3. 781 views
What do you think they mean when asking How does the author A Nation Apart organize information to build his argument? Does he
1. 4 answers
2. asked by Iseeyou
3. 761 views
How do you find the definite integral of an absolute function?∫_0^3|2x-3| lower limit= 0 upper limit = 3
1. 4 answers
2. asked by Stephen
3. 760 views
A student placed 10.5g of glucose (C6H12O6) in a volumetric flask, added enough water to dissolve the glucose by swirling, then
1. 1 answer
2. asked by anonymous
3. 745 views
A cell divides into two identical copies every 4 minutes. How many cells will exist after 5 hours?
1. 2 answers
2. asked by Lady
3. 738 views
A map's key indicates that 3/4 of an inch represents 60 miles. How many miles does 2 1/4 inches represent?in/mi 3/4 / 60 = 2 1/4
1. 5 answers
2. asked by Jennifer
3. 723 views
can anyone please help me with understanding how to graph equations such as 2x-3y=9, 6x-5y+20=0, -2x=2y +5, and y=-2.Thnx!
1. 1 answer
2. asked by anonymous
3. 721 views
How did the geography of ancient Greece cause it to separate into independent communities?
1. 6 answers
2. asked by Shan
3. 718 views
How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from
1. 2 answers
2. asked by linda
3. 716 views
Sorry about thatThe chemical 5-amino-2,3-dihydro-1,4-phthalazinedione, better known as luminol, is used by forensic scientists
1. 4 answers
2. asked by HELP PLEASEEE
3. 706 views
What is the percentage of oxygen in____?Mg(OH)2
1. 1 answer
2. asked by Cool Dom
3. 694 views
I'm doing a physics project where I have to find plans for a device and then build it and type a report demonstrating the
1. 1 answer
2. asked by Steve
3. 692 views
. Consider a non-ideal gas with the equation of state:where b is a constant. i) Derive expressions for: (P/T)V and
1. 1 answer
2. asked by merissa
3. 680 views
in a reaction with 9-fluorenol and sodium hypochlorite (with acetic acid) that is supposed to yield 9-fluorenone, what could be
1. 0 answers
2. asked by Anonymous
3. 668 views
still need to know what chemical tests you can perform to distinguish the difference between a sample of iron and a sample of
1. 4 answers
2. asked by de kuilen high
3. 658 views
How is doing operations (adding, subtracting, multiplying, and dividing) with rational expressions similar to or different from
1. 1 answer
2. asked by linda
3. 646 views
we have to make an instrctinal packet showin relationships between moles and concentration.i cant find the following 1)how is
1. 6 answers
2. asked by lyne
3. 626 views
Multiple-Concept Example 3 provides some pertinent background for this problem. Suppose a single electron orbits about a nucleus
1. 1 answer
2. asked by Jordan
3. 621 views
How do ethics affect your chosen level of significance?I am not sure if I understand what the instructor is wanting can some
1. 1 answer
2. asked by JOHN
3. 618 views
can you check if I did the problems correctly? thanks!a soln of NaOH is prepared by dissolving 5.0g of NaOH in 500mL of water,
1. 1 answer
2. asked by Anonymous
3. 616 views
can anyone please help me with understanding how to graph equations such as 2x-3y=9?thanx i appreciate it!
1. 1 answer
2. asked by linell
3. 606 views
I need some help with find information on what are the implications for patients? What types of reform efforts are being
1. 3 answers
2. asked by Kia
3. 606 views
Could you please give me a link to facts on how to increase state jobs and money, and if you have any facts of your own you may
1. 7 answers
2. asked by Cindy C.
3. 596 views
(i) Explain why the freshman criterion for sponteneity: G=H-TS < 0 is just a statement of the second law of
1. 1 answer
2. asked by merissa
3. 588 views
In the fifth reaction of Glycolosis, G3P dehydrogenase converts glyceraldehydes-3-phosphate into glycerate-1,3-bisphosphate. In
1. 0 answers
2. asked by kat
3. 575 views
The office hires an employee who is deaf, what will the employer have to do in terms of this employee's job duties to comply
1. 1 answer
2. asked by mmj
3. 574 views
Since political parties are not mentioned in the Constitution, why did they develop se quickly in the new nation?
1. 1 answer
2. asked by Kimmy
3. 567 views
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
1. 1 answer
2. asked by Laura
3. 562 views
I realize this is very last minute. I wrote a 6-page history paper on the topic of civil rights and I want someone to read it
1. 2 answers
2. asked by JJ
3. 561 views
I've been working on this a while, and I thought I got it right...until I got to step two. When I tried "veryfying my solution
1. 2 answers
2. asked by Katy
3. 546 views
If you have ever poured oil into a glass of water, you have seen that these two substances do not mix. Knowing this, how do
1. 2 answers
2. asked by A. W.
3. 533 views
A=1/2rh+1/2sh. solve for h.
1. 1 answer
2. asked by kecy
3. 532 views
What mass of propanoic acid, CH3CH2COOH, pKa= 4.87, should be dissolved in water to 2.00L volume in order to produce a pH of
1. 1 answer
2. asked by Jude
3. 528 views
Which example is a function and which is not? Explain why.1. Each student takes a selection of art classes. 2. Each student is
1. 10 answers
2. asked by ~{HAPPY FACE!!}~
3. 527 views
the thing that is troubling me is that NO2 is not (NO2)-does that change it from being considered a lewis base to a lewis acid?
1. 1 answer
2. asked by Anonymous
3. 526 views
Oxygen reacts with the dipeptide glycylglycine [C4H8N2O3(s)] to form urea [CH4N2O], carbon dioxide and water:3O2(g) + C4H8N2O3
1. 1 answer
2. asked by Tillie
3. 523 views
i am doing a project about franz marc an i need some info on one of his animal paintings this info consists of:name: when it was
1. 2 answers
2. asked by sophie
3. 523 views
What is the molecularity of the elementary reaction?SO_3(g)-->SO_2(g)+O(g)
1. 3 answers
2. asked by s1175
3. 522 views
: Reflect on your own worldview and compare it withthe worldviews presented in the text. Provide examples of the benefits of
1. 2 answers
2. asked by brandy
3. 522 views
I have to know what recommendations concerning starch in our diet, and the chemistry of starch as well. Please help?
1. 2 answers
2. asked by Cassandra
3. 517 views
Simplify:this is a triple decker fraction 1/a + 1/c divided by a^2 - c^2 divided by ac I am stuck on this one please help.
1. 2 answers
2. asked by Jennifer
3. 514 views
Chemistry - Danielle , Wednesday, February 11, 2009 at 7:24pmThe density of a 22.0% by mass ethylene glycol (C2H6O2) solution in
1. 1 answer
2. asked by Danielle
3. 513 views
WHY DID THE 1962 AVALANCH OF PERU HAPPEN
1. 1 answer
2. asked by ALEX
3. 509 views
In the constitution the power to regulate trade, make treaties with foreign goverment, and make law "necessary" to govern
1. 1 answer
2. asked by Anonymous
3. 505 views
A student adds 1.00x10^-8 moles HCl to a liter of soln. The resulting soln will be acid, basic, neutral, or impossible to
1. 3 answers
2. asked by Anonymous
3. 504 views
Susan Mont"gum"ery Williams is the Guinness Record Holder of the Worlds largest gum bubble. How big was it?
1. 1 answer
2. asked by honorsclass
3. 497 views
I need a full sentence outline on a thesis. The thesis is "Although children are taught the basics in school there needs to be
1. 3 answers
2. asked by Anonymous
3. 496 views
What causes muscles to twitch?
1. 5 answers
2. asked by ashma
3. 495 views

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