Archives
2010
March

Questions Asked on March 2, 2010

The following reaction is first order, C2H6==> 2CH3. If the rate constant is equal to 5.5 x 10-4 s^-1 at 1000 K, how long will
1. 8 answers
2. asked by gaby
3. 9,822 views
An electron is released from rest in a uniform electric field and accelerates to the north at a rate of 115 m/s2. What are the
1. 2 answers
2. asked by electric field
3. 5,862 views
The manager of a 100 unit apartment complex knows from experience that all units will be occupied if the rent is $500 per month.
1. 2 answers
2. asked by Peter
3. 5,463 views
A 9500 pF capacitor holds plus and minus charges of 16.5*10-8 C. What is the voltage across the capacitor?
1. 2 answers
2. asked by electric field
3. 4,115 views
The reaction for the decomposition of dinitrogen monoxide gas to form an oxygen radical is: N2O(g)==>N2(g)+O(g) . If the
1. 3 answers
2. asked by gaby
3. 3,864 views
here is the question:A sapphire gemstone contains 52.7% aluminum, 47.% oxygen, and traces of titanium. If the saoohire was found
1. 4 answers
2. asked by Jena
3. 3,381 views
How does the activation energy of an uncatalyzed reaction compare with that of the catalyzed reaction?
1. 1 answer
2. asked by Gabby
3. 3,380 views
Choose the word to be used.Jose and (her,she) agree with me. "Plese help, I can not decide."
1. 6 answers
2. asked by sierra (6th grade)
3. 3,093 views
In order to keep a leaking ship from sinking, it is necessary to pump 11.0 lb of water each second from below deck up a height
1. 2 answers
2. asked by Kyle
3. 2,493 views
For the equilibrium below at 400 K, Kc = 7.0.Br2(g) + Cl2(g) reverse reaction arrow 2 BrCl(g) If 0.90 mol of Br2 and 0.90 mol
1. 2 answers
2. asked by James
3. 2,354 views
A voltage V across a resistance R generates a current I=VR. If a constant voltage of 4 volts is put across a resistance that is
1. 2 answers
2. asked by Samuel
3. 2,289 views
Can someone help me? I'm really confused.The loudness L of a sound in decibels is given by L= 10log(base10)R, where R is the
1. 6 answers
2. asked by Ana
3. 2,262 views
The pressure exerted on a 240. mL sample of hydrogen gas at constant temperature is increased from 0.428 atm to 0.724 atm. What
1. 2 answers
2. asked by Rayven
3. 1,952 views
why did the ghost decide to haunt city hall
1. 9 answers
2. asked by john bobberskat
3. 1,879 views
To reduce 32 grams of a 25% solution of antiseptic to a 10% solution, how much distilled water should a pharmacist add?
1. 5 answers
2. asked by Chelsea
3. 1,857 views
A retail store estimates that weekly sales s and weekly advertising costs x (both in dollars) are related bys=50000−430000e^(�
1. 1 answer
2. asked by Nathan
3. 1,590 views
The reversible reaction n2(g) + 3h2(g)<-> produces ammonia, which is a fertilizer. At quilibrium, a 1-L flask contains 0.15 mol
1. 1 answer
2. asked by anonymous
3. 1,560 views
Solve and graph the solution set on a number line.|5x + 7| - 2 < 4 <------------------------> -5 -4 -3 -2 -1 0 1 2 3 4
1. 1 answer
2. asked by Kevin
3. 1,489 views
Two point charges, 3.4 μC and -2.6 μC, are placed 1.6 cm apart on the x-axis. At what points along the x-axis is (a) the
1. 2 answers
2. asked by electric field
3. 1,470 views
A 38 L gas tank at 35 Celsius has nitrogen at a pressure of 4.65 atm. The contents of the tank are transferred without loss to
1. 2 answers
2. asked by Smith
3. 1,434 views
What is the product formed from the nitration of 1,2-dimethoxybenzene ( veratrole)? What would be the equation for the reaction.
1. 1 answer
2. asked by Niki
3. 1,372 views
Calculate the pH of a 0.10 M solution of barium hydroxide, Ba(OH)2.
1. 1 answer
2. asked by Saira
3. 1,355 views
What is the average linear speed of the Earth about the Sun? (The distance from the Sun to the Earth is 1.50 1011 meters. The
1. 2 answers
2. asked by Max
3. 1,290 views
125 mL of 25 dergree celsius of distilled water was used to wash and transfer a precipitate. rather than 20 ml of CHILLED
1. 1 answer
2. asked by Myaa
3. 1,288 views
The base of a triangle is 3m longer than the height. Find the base if the area of this triangle is 77m^2.
1. 2 answers
2. asked by Chad
3. 1,267 views
A 62 kg hiker climbs to the top of a 3700 m-high mountain. The climb is made in 5.0 h starting at an elevation of 2600 m.
1. 1 answer
2. asked by peyton
3. 1,259 views
A farmer has a dog, two geese and three bags of corn. He comes to a river. The boat to ferry him across the river can only hold
1. 2 answers
2. asked by David
3. 1,199 views
the sum of two numbers is 11. their product is 30. find the numbers. answer 5,6 represent the unknown by variables using let
1. 1 answer
2. asked by ed
3. 1,185 views
A sample of 2-methyl-1-butanol has a specific rotation of -3.25°. Pure (R)-2-methyl-1-butanol has a specific rotation of
1. 0 answers
2. asked by Chad
3. 1,184 views
Calculate the molality (m) of a 8280 g sample of a solution of the solute CH2Cl2 dissolved in the solvent (C2H5)2O if the sample
1. 1 answer
2. asked by adam
3. 1,177 views
14. The stomata are responsible fora. translocation b. leaf growth c. regulating water loss d. the transport of minerals D? 2.
1. 0 answers
2. asked by mysterychicken
3. 1,177 views
Suppose a reaction involved a finely ground powder reacting with a concentrated acid. Suggest three methods of decreasing the
1. 2 answers
2. asked by John
3. 1,163 views
Are these correct?:-France is fighting England and they are being helped by the Burgundians right? -Joan heard the voices of god
1. 1 answer
2. asked by Kerry
3. 1,155 views
Which of the following solutions added to the hydrogen peroxide solution may act as a catalyst.KI, KCl, NaCl Are KI, KCl, NaCl
1. 1 answer
2. asked by Sarah
3. 1,140 views
The length of a rectangle is 2 cm more than three times the width. Find the dimensions of this rectangle if the area is 21 cm^2.
1. 1 answer
2. asked by Chad
3. 1,121 views
The term refers to the "procedures that are required by law" and reflects ideas about justice and fairness.
1. 1 answer
2. asked by colorado
3. 1,118 views
At noon, ship A is 20 nautical miles due west of ship B. Ship A is sailing west at 23 knots and ship B is sailing north at 17
1. 3 answers
2. asked by Samuel
3. 1,114 views
A boat is pulled into a dock by a rope attached to the bow of the boat and passing through a pulley on the dock that is 1 m
1. 0 answers
2. asked by Samuel
3. 1,112 views
I forgot to include the following sentences for you to check.Thank you very much in advance. 1) The Black Death was caused by
1. 1 answer
2. asked by Franco
3. 1,103 views
What is a definition of decreasing pattern, increasing pattern and repeating pattern?
1. 0 answers
2. asked by Strawberryhat
3. 1,094 views
Can you please help solve this equation using the substitution method? I have tried and keep getting that X and Y = 7/2, but the
1. 4 answers
2. asked by Mia
3. 1,090 views
Can someone please help to find poetic devices in this poem? I know there's similes, alliteration and repetition. Can someone
1. 2 answers
2. asked by Gaveen
3. 1,079 views
what are the communication skills of the world health organization and the center for disease control and prevention? what
1. 0 answers
2. asked by cortez
3. 1,074 views
Could you use doubling to multiply 7x 3? explain
1. 2 answers
2. asked by Jay
3. 1,069 views
If 335g water at 65.5 degC loses 9750 J of heat, what is the final temperature of the water?
1. 1 answer
2. asked by Sammy
3. 1,066 views
A lady has a certain number of dollar bills in her purse. She has no other money. She spends half the money on a hat and gives
1. 5 answers
2. asked by CeCe 3gr
3. 1,055 views
A plane flying with a constant speed of 24 km/min passes over a ground radar station at an altitude of 8 km and climbs at an
1. 1 answer
2. asked by Danny
3. 1,050 views
If you invest $50,000 to earn 8% interest, which of the following compounding approaches would return the lowest amount after
1. 0 answers
2. asked by Strayer
3. 1,047 views
determine the pH of 10.00mL or 0.100M HCl after adding 10.00mL of indicator solution. (i think this is supposed to be a buffer
1. 1 answer
2. asked by Reen
3. 1,035 views
please explain : “Science gives an intellectual view of reality, and the arts try to make the emotions as precise and
1. 2 answers
2. asked by sammi
3. 1,020 views
Umm OK let's see so France is fighting England and they are being helped by the Burgundians right?Joan heard the voices of god
1. 1 answer
2. asked by Kerry
3. 1,010 views
What is the probability of drawing a red checker from a bag of 9 black checkers and 6 red checkers, replacing it, and drawing it
1. 2 answers
2. asked by Ali
3. 993 views
The American Veterinary Association claims that the annual cost of medical care for dogs averages $100, with a standard
1. 1 answer
2. asked by Ashley
3. 993 views
the more elastic the demand for the good labor produces, the less elastic the demand for labor. True or FalseWhen a
1. 2 answers
2. asked by Krysta
3. 963 views
consider the two compounds, CH3CH2CH2CH2CH2OH and CH3CH2OCH2CH2CH3. Giving reasons for your choice, select the compound thata)
1. 1 answer
2. asked by shelly
3. 963 views
how does water change state?
1. 2 answers
2. asked by Cameron
3. 955 views
assume that you have a solution that is 5% (mol) acetone and 95% (mol) water. determine the molarity of this solution. how would
1. 0 answers
2. asked by Jake
3. 954 views
Consider the titration of 20 mL of .105M Butric Acid HBut, with .125M sodium Hydroxide?calculate the pH before titration
1. 7 answers
2. asked by simi
3. 952 views
Does any tangent to the curve y=�ãx cross the x-axis at x= -1? If so, find an equation for the line and the point of tangency.
1. 1 answer
2. asked by natalia
3. 949 views
A 1.15 kg block slides down a 19.0 m long 29.0° incline at constant velocity. How much work is done by friction?
1. 1 answer
2. asked by Ray
3. 949 views
How do you download music from jiskha?
1. 1 answer
2. asked by Corey
3. 943 views
I have no clue how to answer this question.A farmer has a square plot of land. An irrigation system can be installed with the
1. 1 answer
2. asked by alicia
3. 917 views
a buffer is made by adding 150 ml of .595M BaF2 and 0f .500M of HF solution.calculate the pH of this buffer system calculate the
1. 6 answers
2. asked by simi
3. 914 views
Calculate the molality (m) of a 6.56 kg sample of a solution of the solute acetone dissolved in the solvent ethanol if the
1. 2 answers
2. asked by Luc
3. 897 views
PLEASE HELP MS.SUE.I really need your help I'm in 3rd grade and I have to do a science fair project. I'm planning on doing the
1. 5 answers
2. asked by Fatima
3. 888 views
Find a coordinate rule for a reflection across the line y = 2x. Then use the rule to find the image of triangle ABC= [ 2 6 0 ] [
1. 0 answers
2. asked by lia
3. 885 views
Can someone please help to find poetic devices in this poem? I found a simile ("Their wives run round like banshees"),
1. 7 answers
2. asked by Gaveen
3. 885 views
identify the various aspects of an organization that influences or is influenced by an organization
1. 1 answer
2. asked by Naomi
3. 875 views
how does the space shuttle maneuver in the exosphere
1. 2 answers
2. asked by mrs.bieber
3. 868 views
You have to prepare a pH 3.50 buffer and you have .10M HCOOH and .10M HCOONa, how many milliliters of each solution do you neeed
1. 1 answer
2. asked by Anonymous
3. 865 views
Before you write your expository essay, you must organize your ideas. One way to organize content is by creating a formal
1. 2 answers
2. asked by Anonymous
3. 849 views
How much work must be done to bring three electrons from a great distance apart to 5.5×10−10 m
1. 1 answer
2. asked by Anonymous
3. 847 views
what examples of acids can i find in my home
1. 1 answer
2. asked by Anonymous
3. 840 views
Given the polar coordinates of a point, how do I find the rectangular coordinates?(2, 3pi/4) (-4, 7pi/6) (2/3, -2pi/3) Given the
1. 1 answer
2. asked by BT
3. 836 views
what does los dias de clase mean
1. 1 answer
2. asked by Sydney
3. 822 views
Explain the use of repetition of the pronoun "I". The poem is "Negro Speaks of Rivers"by Langston Hughes.
1. 1 answer
2. asked by Troy
3. 813 views
Why does Langston Hughes repeat the line, "I've known rivers," in the Poetry "The Negro Speaks of Rivers."The rivers are the
1. 2 answers
2. asked by Troy
3. 801 views
I don't really know what you mean. i looked over my paragraph many many times, and i picked out some errors this time and here
1. 17 answers
2. asked by Anonymous
3. 782 views
What is a concept map. I've asked that same question yesterday as well, but I don't think anyone noticed. Can someone please
1. 1 answer
2. asked by Sara
3. 778 views
In psychology,correlation measure the strength of the link between two variables. It is also important to know that correlations
1. 1 answer
2. asked by vedrana
3. 776 views
How us the speed of a chemical reaction related to the spontaneity of the reaction?
1. 1 answer
2. asked by Alex
3. 753 views
Given the expression Sn = n^2 + 2n for the sume of the first n terms of a series, determinea) An expression, in simplified form,
1. 0 answers
2. asked by CL
3. 749 views
Gravity on the surface of the moon is only1/6 as strong as gravity on the Earth. What is the weight of a 14 kg object on the
1. 0 answers
2. asked by Jennifer
3. 745 views
A 755 N man stands in the middle of a frozen pond of radius 9.0 m. He is unable to get to the other side because of a lack of
1. 1 answer
2. asked by nate
3. 744 views
Give 2 reasons y elliptical galaxies are considered to be older & more evolved than spiral galaxies.They are considered to be
1. 1 answer
2. asked by Sara
3. 742 views
english due tommorow. Need Help
1. 6 answers
2. asked by Anonymous
3. 738 views
Can someone please help to find poetic devices in this poem? I know there's similes, alliteration and repetition. Can someone
1. 2 answers
2. asked by Gaveen
3. 737 views
A voltage V across a resistance R generates a current I=VR. If a constant voltage of 4 volts is put across a resistance that is
1. 2 answers
2. asked by Sam
3. 722 views
what muscles would I use to scratch my head?
1. 1 answer
2. asked by maryann
3. 721 views
Write an equation for the reaction between the Bronsted-Lowry acid HOCl(aq) reacting with base CO32-(aq)I am having difficulty
1. 1 answer
2. asked by Matthew
3. 719 views
I have to write an essay on the drop of the atomic bomb on japan in world war 2.Our teacher told us president Truman never
1. 4 answers
2. asked by Kelsey allen
3. 717 views
* Write an expression that simplifies to 5. Use the multiplication, division, addition, and at leastone set of parenthesis.
1. 1 answer
2. asked by Anonymous
3. 715 views
Write a 1,400- to 1,750-word autobiographical research paper analyzing the influences of race as it relates to your community.
1. 5 answers
2. asked by jamanica
3. 701 views
Sams birthday is 186 days after jim's birthday. susan's is 24 days after jim's. sam was born on september 6. what day was susan
1. 2 answers
2. asked by Sam
3. 695 views
Stoichiometry-I have the basic strategy, but am still stuck on how to do them.example...propane burns in oxygen according to the
1. 1 answer
2. asked by Kay
3. 685 views
need help with doing this combining vector questionA jogger runs with a velocity of 6km/h 25 degrees north west for 35 minutes
1. 2 answers
2. asked by jake
3. 683 views
14. The stomata are responsible fora. translocation b. leaf growth c. regulating water loss d. the transport of minerals D? 2.
1. 0 answers
2. asked by mysterychicken
3. 682 views
I'm writing an essay about medical experiments and the doctors in the Holocaust. I don't need help with the essay, which I can
1. 1 answer
2. asked by Bored
3. 671 views
Calculate the pH of the following salt solutions?0.1 M HBr 0.1 M CaI2 0.1 BaF2 Kb (F-)=1.4x10^-11
1. 5 answers
2. asked by simi
3. 667 views
need help with physcis vector problemUsing combining vectors to find displacement problem(BEST answer)? tourist on a jet ski
1. 1 answer
2. asked by jake
3. 651 views

Back to March 2010

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025