Questions Asked on
May 27, 2008

Chemistry
The burning of methane in oxygen is a highly exothermic reaction. Yet a mixture of methane and oxygen gas can be kept indefinitely without any apparent change. Can someone give me an explanation behind this?
asked by Donna 
Math question  plz correct
Two airplanes leave an airport at the same time. One travels at 355km/h and the other at 450km/h. Two hrs later they are 800km apart. Find the angle between their courses. a^2 = b^2 + c^2  2bc Cos A 800^2= 450^2 + 355^2  2(450)(355) Cos A 640000= 202 500
asked by May 
Chemistry
What is the full net ionic equation for each reaction? do they form a precipitate or have a color change? CuSO4+AgNO3 CuSO4+BaCl2 CuSO4+Cu(NO3)2 CuSO4+Pb(NO3)2 CuSO4+KI CuSO4+Na2S2O3 AgNO3+BaCl2 AgNO3+Cu(NO3)2 AgNO3+Pb(NO3)2 AgNO3+KI AgNO3+Na2S2O3
asked by Joe 
Chemistry
What is the full net ionic equation for each reaction? do they form a precipitate or have a color change? CuSO4+AgNO3 CuSO4+BaCl2 CuSO4+Cu(NO3)2 CuSO4+Pb(NO3)2 CuSO4+KI CuSO4+Na2S2O3 AgNO3+BaCl2 AgNO3+Cu(NO3)2 AgNO3+Pb(NO3)2 AgNO3+KI AgNO3+Na2S2O3
asked by Joe 
Chemistry
Calculate the percent ionization of cyanic acid, Ka=2.0x10^4, in a buffer soln that is .50M HCNO and .10M NaCNO. Answer is .20%. So,I know that NaCNO>Na+ + CNO so [CNO]=.10M from ICF chart. and then HCNO H+ + CNO where: [HCNO]= .5 and [CNO]=.1 With
asked by howie 
Chemistry
Captain Kirk, of the Starship Enterprise, has been told by his superiors that only a chemist can be trusted with the combination to the safe containing the dilithium crystals that power the ship. The combination is the pH of Solution A described below,
asked by Tom 
Macroeconomics
Peter Pundit, an economics reporter, states that the European Union (EU) is increasing its productivity very rapidly in all industries. He claims that this productivity advance is so rapid that output from the EU in these industries will soon exceed that
asked by Tiffany 
chem
how would i figure out this question? assume that 5.60 L of H2 at STP reacts with CuO according to the equation: CuO+H2 yields Cu+H2O a. how many moles of H2 react? b. how many moles of Cu are produced? c. how many grams of Cu are produced? i have no clue
asked by Alicia 
Science and acrostic poems
HI! I'm making an acrostic poem about Apollo Eleven for my science class. I need help making one, so can someone give me a word for some of the letters?....(mostly the E's) A (astronauts) P O (outer space) L L (landing) O E L E V E N
asked by Steve 
Math (Data Management)
The student council is ordering pizza for their next meeting. There are 20 council members, 7 of whom are vegetarian. A committee of 3 will order 6 pizzas from a pizza shop that has a special price for large pizzas with up to three toppings. The shop
asked by Megan 
INB
What should Tom Sloane and U.S. Pharmaceutical of Korea do to improve collections from wholesalers?
asked by mary 
Chemistry
Sacchirin is a monoprotic acid. If the pH of a 1.50x10^2M solution of this acid is 5.53, what is the Ka of saccharin? (the answer is 5.8x10^10) I know we're supposed to use the Henderson Hasselbach equation to solve for the [H+] from pH, but what's next?
asked by howie 
chemistry
Captain Kirk, of the Starship Enterprise, has been told by his superiors that only a chemist can be trusted with the combination to the safe containing the dilithium crystals that power the ship. The combination is the pH of Solution A described below,
asked by Tom 
math
Alright, let's say you want to get from one point to another, in a 3D box. all points have an x, y and z coordinate. Point A has coordinates (25,30,5) while Point B has coordinates (50,26,18). The only given variable other than the coordinates is the speed
asked by Jesse 
english
While there may be opposition from students and parents, dress codes should be enforced in schools as they encourage discipline among students. This is my thesis statement for an essay :dress codes in schools". how can I support it with compelling
asked by Mel 
Social Studies   The Spread of Islam
Hello. I need to give three reasons for the spread of Islam. It'd be very helpful if someone could help me to find a good website. The ones I've found on Google haven't been all that helpful. Please and thank you. Eve
asked by Eve 
Algebra~Scary problem!
A launched rocket has an altitude, in meters, given by the polynomial h+vt4.9t^2, where h is the height, in meters, from which the launch occurs, at the velocity v in meters per second, and the t is the number of seconds for which the rocket is airborne.
asked by Sahara 
Anatomy
Is this the correct direction of blood flow through blood vessels Right atrium, right ventricle, pulmonary artery, pulmonary veins, left atrium, left ventricle.If not please help.
asked by Jin Kobeaux 
social studies
What was the main idea of the declaration of the rights of man and citizen?
asked by Renee 
Physics
At 08:00hrs a 2.7 mlong vertical stick in air casts a shadow 1.8 m long. If the same stick is placed at 08:00hrs in air in a flat bottomed pool of salt water half the height of the stick, how long is the shadow on the floor of the pool? (For this pool, n
asked by Katie 
Math
If Ann is 6 years older than her sister, Sue, and John is 5 years older than Ann, and the total of their ages is 41. Then how old is Sue?
asked by Hu 
English 5
Directions: In each of the following sentences some part of the sentence or the entire sentence is underlined. Beneath each sentence you will find four ways of writing the underlined part. The first of these repeats the original, but the other three are
asked by rose Ms. sue 
Physics
At 10:00hrs a 1.5 mlong vertical stick in air casts a shadow 1.4 m long. If the same stick is placed at 10:00hrs in air in a flat bottomed pool of salt water half the height of the stick, how long is the shadow on the floor of the pool? (For this pool, n
asked by Lindsay 
English  last part
Directions: In each of the sentences below, three portions are underlined and lettered. Read each sentence and decide whether any of the underlined parts contains a grammatical construction, a word use, or an instance of incorrect or omitted punctuation
asked by rose Ms. sue 
french
les verbes suivis de l'infinitif We are learning about infinitifs following a verb, so its either nothing following, like aimer... the preposition "a", like chercher a and the preposition "de", like accepter de... I just want to know is there actually a
asked by french 
MathOptimization
The material for the base of a box will cost three times as much as the material for the sides and top of the box. The box must have a volume of 200 meters cubed. Find the most efficient way to built this box.
asked by Megan 
math
if a square pyramid has a base side length of 6.3 m and a slant height of 4 m. find its surface area
asked by brooke 
scince maths
1 What volume of hydrogen gas at 273 K and 1 atm pressure will consumed in obtaining 2.16 gm of elemental born(atomic mass=10.8)from the reduction of born trichloride by hydrogen: A 44.8 lit B22.4 lit C 89.6 lit D67.2 lit
asked by rohit 
Economics
What product would be suitable to export to Hong Kong based solely on the location, climate, topography, and natural resources.
asked by Max 
chemistry
A chemist wishes to determine the concentration of CrO42 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is composed of mercury in contact with a saturated
asked by Tom 
business calculus
Approximate the area under each curve over the specified interval by using the indicated number of subintervals and evaluating the function at the righthand endpoints of the subintervals. 1. f(x)=9x^2 from x=1 to x=3; 4 subintervals. 2. f(x)=x^2 +x+ from
asked by RAY 
englishplease revise
Question: What was your experience with the Center for Writing Excellence (CWE) in the past? In addition to the CWE, what other writing tools are available for revising a research paper? How can you become your own editor and look at your writing with a
asked by rose Ms. sue 
english  II
The following is an outline for a paper on the separation of powers in the United States government. I. Theory and origin of the separation of powers II. The division of powers among the branches of government A. The executive branch B. The legislative
asked by rose Ms. sue 
math
Running at a constant speed, Andrea covers 15 miles in 2.5 hrs. At this speed, how many minutes will it take her to run 2 miles? I know that I need to use conversion but i don't know how to convert it.
asked by derek 
Government
What are basic features of the American concept of Democracy?
asked by Rachael 
statistics
I can't seem to figure out the class interval for this grouped frequency distribution table: Highest Score=684 Lowest Score=56 & the professor has instructed us to use an interval size of 61 The starting point needs to be divisible by 61 due to convention.
asked by Leeza 
Math
If Sally can paint a house in 4 hours, and John can paint the same house in 6 hours; how long will it take for both of them to paint the house together?
asked by Janah 
english  last
7) Surrounded by mountains and 7,400 feet above sea level, Mexico City (A) suffers from both (B) kinds of air pollution, the photochemical reaction of Los Angeles (C) or the thermal inversion of New York. A) suffers from B) kinds of air pollution C) or D)
asked by rose Ms. sue 
The Science of Nutrition
Explain from a physiological standpoint, how eating disorders may lead to health problems. Give at least 3 examples.
asked by greatdanelola 
Algebra
Factor completely: 3x squared15x72. A> 3(x squared5x24) B> (3x24)(x+3) C> 3(x+8)(x3) D> 3(x8)(x+3) I got D. But could it be B?
asked by Anonymous 
Physics
I don't necessarily need an answer here... just a step in the right direction. If you drive into a wall at 5 m/sec, rebound at 1 m/sec, and make contact with the wall for .15 sec, with what force did the wall exert on the car? (mass = 220 kg) I can't
asked by Mark 
chemistry
adding 50 grams of NH4CL to water at 30 degrees celsius produces what kind of solution? (saturated, unsaturated, supersaturated?)
asked by mehrose 
Science
need info about Niels Bohr's quantum theory????????
asked by Sam 
ETH 125/ Cultural diversity
Trends in immigration will continue to shape the face of the United States. What will this face look like in 2050?
asked by Anonymous 
ecology
what part of the plant absorbs the most water?? Is it the stem?
asked by erica 
chemistry
how can you tell how many valence electrons family 3 (transition metals) have? im confused about this.
asked by riley 
Algebra
Given Set H which contains all high school students in New York State who take Integrated Algevra. Set N contains all high school students who attend school in New York City. Which set represents H(upsidedown U symbol)N?
asked by Anonymous 
english  revise please
When Congress passed the Federal ReserveAct of 1913, it gave the Federal Reserve Board afree hand in steering the economy. (2) The President, while charged with appointing the chair and board members, has no direct role to play in the Board’s policy
asked by rose Ms. sue 
Marketing
what alternatives does XM Satellite Radio have
asked by China 
science
how does heat flow and movement of material within Earth move the continents,cause earthquakes and volcanic eruptions and create mountains
asked by polly 
Chemistry
Where can I find a picture of the molecular orbital diagram for OH?
asked by Tom 
Algebra
I am lost on how to divide this problem and why they won't offer examples in the book is mind boggling. 8x^4y^2/4x^7y^2
asked by Casey 
Algebra
I can't figure this out. (f^4/g^5)^7
asked by Ashli 
Chem question?
I have a homework question that says, If you were dissolving table salt in a beaker of water, what would a saturated solution look like (macroscopically)?
asked by Lisa 
SOCIAL STUDY
WHY SHOULD WE GO TO A FILED TRIP.
asked by MARK 
social studies
How did the growth of the railroads contribute to the decline of the native americans
asked by mirian 
math
Debbie goes to a diner famous for its express lunch menu. The menu has 5 appetizers, 3 soups, 7 entrees, 6 vegetables, and 4 desserts. How many different meals consisting of either an appetizr or a soup, one entree, one vegetable, and one dessert can
asked by derek 
medical language
Choose only from the following approaches: microscopictomacroscopic, body directions and planes, body cavities, and quadrants and regions. Justify your reasoning.
asked by sue 
physics
how do you find the volume of a pyrimid ?
asked by bill 
Math
For all values x for which the terms are defined, fidnteh value(s) of k, 0
asked by Gina 
algebra
for a question like: car A was traveling at 25miles/hour for 3 hours. Car B was traveling at 30mph for 6 hours. When will they meet?
asked by jenny 
Social Studies
Has society become too organized? Does free will exsist? What role does chemical engineering play in society?
asked by Ashten 
Scenario Question?
Dan is an employee at a regional midsize computer company that has recently been sold to a larger, national computer manufacturing corporation. Dan is in charge of computer production orders, and because of this recent shift in ownership, his
asked by Ree 
I HAVE A MATH TEST TOMORROW HELPPP PLEASE!
im not sure how to find the first four terms of each arithmetic sequence tn=4+(n1)(3) helpp me pleasee!
asked by Mandy 
History
Please help me revise my History essay. The Inevitable Decision: America’s Entry into WWI Words are cheap. The infamous maxim has survived throughout history and its value has been demonstrated on a multitude of occasions. One situation that is
asked by Brad 
math
Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly between two cities that are a distance of 1680 miles apart. On one particular trip, they flew into the wind and the trip took 4 hours. the return trip with the wind behind them, only
asked by aaron 
MATH
Matt and Anna are frequent fliers on Fast n Go Airplanes. They often fly between two cities that are a distance of 1680 miles apart. On one particular trip, they flew into the wind and the trip took 4 hours. the return trip with the wind behind them, only
asked by AARON 
french
What is the differences between vivre and habiter?
asked by french 
Math
What is the volume of a sphere with a radius of 5 cm?
asked by Nancy 
applied physics
if a DC motor uses a775 coulombs of charge in 15 seconds,how much current is produced
asked by Ashleigh 
algbra 2
1. find the vertex of the parabola. 4x=y^2+6y11 2. find the center and radius of this circle x^2+y^26x+4y4=0
asked by Taylor 
biology
What are two disadvantages of nuclear energy?
asked by carlie 
geometry
this is a regular pyramid, length is 8, base is 8, side is 4. formula = S=B+1/2Pl total surface area to the nearest tenth thanks guys!
asked by wigums 
chemistry
what are the three basic bonds. Ionic bond, covalent bond, ???? what is the third bond???
asked by mehrose 
english  repost last
11) (A) No Chinese or Indian objectindeed, (B) no object of any kind from Asiahas been found in the Americas in archaeological levels (C) that date to preColumbian times. A) No Chinese B) no object of any kind C) that date to D) No error My answer is
asked by rose Ms. sue 
algebra
DRT problem A bicyclist travels 20 miles per hour faster than a walker. The cyclist traveled 25 miles in the time it took the walker to walk 5 miles. Find their speeds.
asked by Help! Final Test Tom. 
MS Access
How do I increase a column in access. My headings are on top of one another.
asked by Pam 
math 115
The following scores were recorded on a 200point final examination: 193, 185, 163, 186, 192, 135, 158, 174, 188, 172, 168, 183, 195, 165, 183. (a) Find the mean final examination score. (b) Find the median final examination score. (c) Is the mean or
asked by Sam 
French
Whis the pronouncation difference between le and leur? Its really hard to tell.
asked by par 
Social studies
i have a d d and cant write and my friend whose name was "me" who was treated rudely said u all do the work so put a essay about greensboro sit ins thanks
asked by BILLY 
Globalization
Identify potential domestic and international sources of financing for your global venture project. Ineed atleast 3 or 4 soucres.
asked by Todd 
Algebra
What is the relationshiip between the lines of these two equations?: 2x+3y=12 y=2/3x20 They are parallel, right?
asked by Anonymous 
social
what is Pluralism??
asked by Anonymous 
French
Hi, I am doing a summary of a french comic book, Les Schtroumpfs, Could anyone please help me with any errors I made in this section, grammar,tenses, etc “Les Schtroumpfs et le livre qui dit tout” est un album de 48 pages qui est dessiné par Pascal
asked by Sarah 
english  4
(1) In 1905 Einstein interpreted the “photoelectric effect” of light, a phenomenon that cannot be explained by the wave theory of light. (2) When a photon strikes an electron, the resulting action is analogous to the collision of billiard balls. (3)
asked by rose Ms. sue 
Math Research
Can someone please tell me any websites that can explain the Sierpinski triangle and talks about its history, and formula? ThanKs!
asked by Ryoma 
Biology
What two steps are involved in the transfer of information from a gene to the final protein product?
asked by Jahreta 
Math
Find all x, 4pi < x < 6pi, such that [cos(x/3)]^4 + [sin(x/3)]^4 = 1 PLEASEEE HELPP! :(
asked by Megan 
Algebra
The last problem I have that I can't solve either and it's driving me nuts. Assume b,c ‚ 0 (4b^2c^3)^4
asked by Ashli 
Social Studies
I need to research a person who was interesting and influential in the 1970's to write an article on... Any Ideas??? I can't decide... But i don't want to do a president
asked by Anonymous 
health
Hi, I was wondering if someone could help me with some research I'm doing?: Is it possible to have anemia and find out later that you have leukemia, because I read that anemia is a symptom of leukemia?
asked by Jennifer 
Physics
An object whose height is 5.8 cm is at a distance of 9.5 cm from a spherical concave mirror. Its image is real and has a height of 9.2 cm. Calculate the radius of curvature of the mirror. I got 0.1165 m for my answer. How far from the mirror is it
asked by Lindsay 
social studies
this terrorist organization is thought to be responsible for the attacks on new york city in 2001?
asked by Brandi 
ETH 125/ Cultural Diversity
Trends in immigration will continue to shape the face of the United States. What will this face look like in 2050?
asked by Anonymous 
social studies
why should chimps be included in the definition of man?
asked by harriet 
languages
Complete the following matrix. For each body system, identify which body approach(es) might best be used to organize information. Choose only from the following approaches: microscopictomacroscopic, body directions and planes, body cavities, and
asked by sue 
business calculus
Approximate the area under each curve by evaluating te function at the lefthand endpoints of the subintervals. 1. f(x)=9x^2 from x=1 to x=3; 4 subintervals. 2. f(x)=x^2 +x+ from x= 1 to x=1; 4 subintervals.
asked by RAY 
Medical
a type of breathing the word is 6 letters long.Please Help
asked by Eli 
Math
Hi! I need help with the following math problem: A building has 4 columns, each of which is 15 ft high and has a circumference of 1 2/3 yards. 1. Find the lateral surface area of the 4 columns. 2. How much will it cost to paint the 4 columns if paint costs
asked by Suomynona 
business
What issues can arise in doing business globally?
asked by jean 
SCIENCE
IF A GALLON OF POTSSIAM NITRATE AND 1000 POUNDS OF DLOMOTICLETROX ARE MIXED WHAT WILL HAPPEN. MY TEACHER GAVE US A BOOKLET FULL OF THESE QUESTIONS
asked by MIKEYL 
math
4 sqrt(3) minus sqrt(64) plus 6 sqrt(27)
asked by jaydee 
Science
Does anyone have the spectra for sulfur? In class we did this using a flame test, where we put the sulfur in a flame over a bunsen burner and used a spectra scope to find sulfur's spectra, but I seem to have lost this data. I've been looking on the web,
asked by Maddie 
INFORMATION TECHNOLOGY HELP!!!!!!!!!!
How does Information Technology affect skills?
asked by KERRYANN 
economics
describe the economic system most common to primitive societies
asked by lisa 
social studies
i have a project in which i have to make a board game and ask questions sort of like cranium... one of the question topics is emigrant vs immigrant and im not sure what to write for a question...
asked by anonymous 
Gender Inequalities
Are there any inequalities between men and women in the armed forces?
asked by Katherine 
health care
What is the socialization process for caregivers? What are the implications for patients?
asked by Anonymous 
Ted needs assistance
Could someone give a little more help to Ted with his anthropology question? It is really not about anthropology at all.
asked by Brandon 
history
who was the 27th president?
asked by Amy 
ETH 125/ Cultural diversity
How can the country best prepare for the changing race and ethnicity of its current and futrue citizens?
asked by Anonymous 
Algebra
When constructing a boxandwhisker plot, the median is equivalent to which term? Is it the second or third quartile?
asked by Anonymous 
algebra
multiplying square roots
asked by scott 
THANKS
Yah...this isn't really a question...but a thanks you post. I just a formula and i am sooooooo thankful!!! THANKS! :)
asked by Dawn 
marketing
What are the decision facing XM satellite radio?
asked by China 
government
what is the job of the government
asked by kyle 
social studies
write castro essay here thanks
asked by me 
civics
what amendment number restricts the president in regards to treason, bribes, and being impeached?
asked by kate 
social studies
how were churches and religious groups involved with immigration????
asked by anonymous 
social studies
what are 3 reasons for emigrating in canada? (please give 3 answers making 2 of them wrong... kind of like multiple choice and specify)
asked by anonymous 
chem
how many grams of zinc oxide are needed to produce 12 mol of zinc?
asked by Anonymous 
french
what are the forms of "er" verbs
asked by bandit 
french
what r the forms of er verbs
asked by bandit55751 
I HAVE A MATH TEST TOMORROW HELPPP PLEASE!
im not sure how to find the first four terms of each arithmetic sequence tn=4+(n1)(3) helpp me pleasee!
asked by Mandy 
social studys
what year will the government release all the files or whatever about area 51 and 9112001
asked by edin