Questions Asked on
April 13, 2009

Chemistry
A dry mixture of kno3 and sand could be separated by 1. adding water to the mixture and filtering 2. adding water to the mixture and evaporating 3. heating the mixture to a high temperature 4. cooling the mixture to a low temperature
asked by . 
Physics
A 32u oxygen molecule (O2) moving in the +x direction at 580 m/s collides with an oxygen atom (mass 16 u) moving at 870 m/s at 27 degrees to the x axis. The particles stick together to form an ozone molecule. Find the velocity of the ozone. Express your
asked by Jacob 
chem help
The reaction of methane and oxygen yields carbon dioxide gas and water. The unbalanced reaction is as follows: CH4(g) + O2(g)CO2(g) + H2O(g) A. If 1.26 grams of methane are reacted, how many grams of water vapor are produced? B. If 2.796 grams CO2 are
asked by eve 
physics
There are four coils of wire being used as electromagnets. They all have the same size and are made up of the same material but have a different number of loops. Which coil will produce a magnetic field with the maximum strength when the same amount of
asked by sophie 
ChemistryEnthalpies of formation
"Synthesis gas" is a mixture of carbon monoxide and hydrogen that is used to synthesize a variety of organic compounds. One reaction for producing synthesis gas is 3CH4 + 2H2O + CO2 = 4CO + 8H2 Using enthalpies of formation, calculate the enthalpy change
asked by Brigette 
integration math
how to integrate: y' = 2xy/(x^2y^2)
asked by stevie 
Chemistry
In a gaseous system at equilibrium with its surroundings, as molecules of A(g) collide with molecules of B(g) without reacting, the total energy of the gaseious system 1. decreases 2. increases 3. remains the same
asked by A 
chem
The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g. Calculate the percent copper in pure copper sulfate pentahydrate(this is the theoretical percent copper). One mole of copper has a mass of 63.55 g, and by
asked by Lou 
geometry
Given: ABCD is a rectangle, diagnoals AC and BD intersect at E Prove: Triangle AEB is isosceles
asked by Sam 
Maths
The question is "Show that z2 is a factor of P(z)= z^3+mz^2+(3m2)z10m4 for all values of m. For what values of m is (z2)^2 a factor of P(z)?" I've proven the first part, using synthetic division, for all values of m. But the second part, I don't
asked by TP 
physics
I am having some difficulty with a few problems on my homework and I'm hoping to get some insight. the first one: a robotic space probe of mass 7600 KG is traveling through space at 120 m/s. Mission control determines that a change in course of 30.0
asked by H.M. 
Statistics
If each of two independent file servers has a reliability of 93% and either alone can run the website, then the overall website availability is: A)0.8649, B) 0.9300, C) 0.9522, D)0.9951 I came up with B. 0.9300 is this correct
asked by Rodnette 
math
What length of fencing is required to surround a square field with area 250 m2? Show your work. Give your answer to the nearest cm. How would i do this???plz help, thx!! :D
asked by rebecca 
Math  Pre Algebra
Simple and Compound Interest Find the simple interest. principal= $870 interest rate= 6% time= 9 months Please help me I need the answer for tommorow.
asked by Tanisha 
Math  Pre Algebra
$1280 at 13% compounded annually for 3 years Find each balance. Use the formula B= p(1+r)n
asked by Ashley 
Chemistry
Given the unbalanced equation shown: _Al+_CuSo4 > _Al2(SO4)3+_Cu When the equation is balanced using the smallest wholenumber coefficients, what is the coefficient of Al?
asked by . 
college
The manager of a Drug Store knows that 50% of the customers entering the store buy prescription drugs, 65% buy overthecounter drugs, and 18% buy both types of drugs. What is the probability that a randomly selected customer will buy at least one of these
asked by Marie 
Biology
Mendel is the father of modern genetics, but there are some genetic characteristics that cannot be explained by simple Mendelian genetics. Such is the case with the human blood types in which there are 3 alleles for the same gene, A B, and o. A parent can
asked by Sherri 
Spanish (URGENT)
Can someone please check my work? Answer the following questions using full sentences and giving as many details as possible/. Your answers should be two sentences long (if it only takes one sentence to answer the question, think of one more piece of
asked by Larry 
chem
The mass of the CuSO4 x 5H2O sample is 1.664 g. The mass of the recovered copper is 1.198 g. 1. Compute the experimental percent by mass of copper in the sample: 1.1664/1.998x 100=71.81% 2. Calculate the percent copper in pure copper sulfate
asked by Lou 
Chemistry
Fractional distillation is a technique used to separate complex mixtures of hydrocarbons based on differences in their 1. heats of fusion 2. heats of vaporization 3. melting points 4. boiling points
asked by . 
math
Use a calculator and systematic trial to approximate each square root to 2 decimal places. SHow your work. a) square root of 20= B) Square root of 55= c)square root of 115= What would systematic trial mean and what do they mean by approximate each square
asked by rebecca 
Business Plan
I am in need of some help in writing a business plan for a fashion, video game and web design company. The plan will include all the above put together because it's the same company. I know I need: 1)Executive Summary 2)Company Overview 3)Marketing and
asked by Jon 
college, Microeconomics
(Daddy Warbucks employs workers in his perfectly competitive factory. Mr. Smith employs workers in his monopolistic factory as the only producer of the thing you really want. Given the following information, determine how many workers each firm will
asked by Lizzy 
algebra
Soybean meal is 16% protein and corn meal is 9% protein. How many pounds of each should be mixed to get a 350lb mixture that is 12% protein?
asked by ashanti 
English
1. I am in the RCY club. We do cleanup activities and help people in need. 2. I am in the gag club. We make scripts and do plays. 3. I am in the science invention club. We make things with plastic and metals and have a display show. 4. I am in the pop
asked by John 
math
7x+21y7=x+3y1 GCF 7
asked by ethen 
Math
How do you know if the relationship shown by the data in a table is linear?
asked by Angie 
college chemistry
How do you calculate the pH difference when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl
asked by Mary 
chem!
A solution was prepared by dissolving 0.163 g of sugar, (C12H22O11 MW = 3423gmol) in 100.00 mL water. What is the molarity of this solution?
asked by eve 
English
Hi! Need some advice.Next week I need to teach a class. My task is to find a text (I have found it,it's a german literature)and now I need to do something with this text and it needs to last for 4560 minutes.It shouldn't be just one task but more(3 at
asked by laxy 
math
10xy15x^2= 5xy(2x3)factor out GCF
asked by ethen 
Physics
A 150g fircracker is thrown at 66km/h . It explodes in the air into two pieces, with a 42g piece continuing ahead at 93km/h.How much energy is gained in the explosion by the two pieces. I know you use k=1/2mv^2 though, do you use m1v1+m2v2=(m1+m2)vf I am
asked by Jacob 
What does this mean?
Can someone please explain to me what this means? A Unanimous Realization of the Need for a Major Change This is the very essence that motivates any revolution. Reform is the key word. A revolution may choose as its object a political transformation, a
asked by John 
language arts
Homonym riddles Why is Sunday the strongest day?
asked by Anonymous 
Physics
The polarity of an electromagnet can be determined using the second righthand rule. A. True B. False Is it B? Current passing through a conductor is increased from 10 A to 15 A. This decreases the strength of the magnetic field produced by the conductor.
asked by sophie 
algebra 2
A colony of germs grows exponentially. It starts at 500 germs. After 8 minutes there are 600 germs. When will there be 1000 germs?
asked by Ana 
math
factor 12x^3+16x^28x = 4x(3x^2+4x2)
asked by ethen 
math
how many solutions are there to the equation 0.2x^+12x+11=0
asked by Anonymous 
math
what catergorie capital and comission fall under. i think capital is owner equity and comission is income statement.
asked by keon 
math
write the equation in the slopeintercept form. 4x  10y = 11
asked by yorkie16 
Biology
Assignment Type: Individual Project Deliverable Length: Completed Punnett Square and Answers to all Questi Points Possible: 125 Due Date: 4/12/2009 11:59:59 PM CT Part 1: Genetics: From Genes to Proteins Convert the following DNA sequence into its RNA
asked by Sherri 
government
Whose responsibility is it to determine if governmental acts are constitutional?
asked by kr 
science
do plant cells have chloroplasts or mitochondria? Please help...im so confused!
asked by baby girl 
HCA 230
ive looked on google and everywhere and i can not find it can some 1 help aNY SITES OR An ything i don't want the answer but a site would be good compose a list of perspectives on health for your assiged role my role is a patient
asked by kimberly 
Math
how do i solve this equation with out using the quadratic formula: 5x^2 +18x +11 = 0
asked by Lucyy 
chemistry
You have 4.0 g of solid A, 100.00 mL of water (100.0 g of water), and the total mass of solid A combined with 100.00 mL of water is found to be 104.0 g. The mass percent of A in this solution is
asked by eve 
Math (Trigonometry)
Jasper walks 2 km due east. He then turns and walks 3 km northeast. a. How far is Jasper from his starting point? Round your answer to 2 decimal places. b. What is the direction of Jasper's destination in relation to his starting point? Round your answer
asked by Marieke 
english  essay specifically
i am currently writing my essay and i am about to put an example from the book Julius Caesar. what is the "protocol" how do i put a set of quotes into the essay?
asked by ton 
com140
idea for day care center for digi fast at reiver view plaza
asked by sue b 
Science
He is training chi energy. He is training Chi energy. He is using ki energy. He is using Ki energy. (Which one is correct?)
asked by John 
math
what is 7.686 rounded to the nearest hundredth?
asked by kayla 
sociology
the gradual transition from monarchy topolitical democracy during the last half of the second millennium stimulated a corresponding transition from imperial rule by the power of the sword to imperial rule by the pwoer of money.
asked by kim 
economics
what is communism?
asked by Anonymous 
English
1. I am in the RCY club. We do cleanup activities and help people in need. 2. I am in the gag club. We make scripts and do plays. 3. I am in the science invention club. We make things with plastic and metals and have a display show. 4. I am in the pop
asked by John 
government
Why would the development of factions within a p0olitical party hurt that party's chances for success?
asked by lisa 
geography
i need to find information about kenya. transport healthcare clothing and education. ive looked myself but can only find things for tourists.
asked by amy 
college
Michael has lived in Portland, Oregon, San Francisco, California, and Providence, Rhode Island. Where would the semi colon go?
asked by Ann 
Biology
Could you help me find any information about the history of genetic technologies and had it first began.
asked by Selenia 
ciminology
Monday 04/13/09 Need help with this.. based on someone's experience with these procedures. Post a 175 to 350word response restating the events in the proper order. Answer this question as part of your response: 1.) what sources were the rights afforded
asked by cris 
Physics
Explain using an example how to charge an object positively using only a negatively charged object.
asked by Sam 
fraction
Which of the following pairs of numbers contain like fractions ? 6/7 and 1 5/7 3/2 and 2/3 5/6 and 10/12 3 1/2 and 4 3/4
asked by mille 
math
determine whether the sysyem is consistent, inconsistent, or dependent. 3x + 2y = 15 6x + 4y = 30
asked by yorkie16 
Racial and ethnic groups
Consider racial imbalances in education, the economy, family life, housing, criminal justice, health care and politics. Of these societal challenges facing modern African Americans, which do you think are most difficult to overcome, and why?
asked by Anonymous 
college chemistry
How do you calculate the pH when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl 4)10mL buffer
asked by Mary 
math
Without looking grace removed 10 marbles from a bag. She removed 5 green, 3 red, 1 blue, and 1 yellow. She repeated the procedure with the remaining marbles and removed 3 green, 3 red, 2 blue, and 2 yellow. Which of these results might possibly occur on a
asked by mp 
Accounting
I can identified two stakeholders Big Eight accounting firm and Baker Greenleaf if these are correct and is there any others. In the case of The Dilemma of an Accountant. Who are the stakeholders and what is their stake in the case?
asked by tory 
Technical Writing
Using presentation software, when do you use certain layouts? I am looking for the "why" and "when" here, not the "how to." I am mainly concerned about: twocolumn text content over text text over content default title and text Thank you, maigan
asked by megan 
not really school related.
Okay, I got accepeted for a part time job at school, and the letter says that I should bring a resume. I never had a job before, so how would I bring a resume, but it seems really bad for me not to bring something.
asked by Chopsticks 
Physics
Particle A has a mass of 2 and a charge of 1. Particle B has a mass of 2 and a charge of +1. Are particle A and B necessarily antiparticles? Explain your answer.
asked by Linn 
Chemistry
Why is the carbonyl group in tertbutoxycarbonyl group (tBOC) less susceptible to attack from nucleophiles than the carbonyl group in esters such as ethyl acetate? Is this something to do with conjugation?
asked by Alice 
the human body
What are the four arm muscles? Im studying to be a dancer so i need to know stretching tecniques containing muscle groups...please help NOW!!
asked by Evelyn 
6th grade vocab
What does the word "predominant" mean? Oh and please don't give me a website with some big def. I am in 6th grade so I won't understand if the def. is big and long. It also helps if you use it in a sentence . . . just saying. :D Thanks so much!
asked by Noelle 
language
Can you correct my metaphor poem pleease MY ROOM My room is a natural disaster When you walk in you think there was an earthquake The bed is always undone Pillows piled higher than a hill The door is higher than a mountain. The floor is a swamp With games,
asked by john 
Physics
Explain using an example how to charge an object positively using only a negatively charged object.
asked by Sam 
algebra
6m+9npn+9m= i DO NOT understand this can anyone help me
asked by sue 
accounting
utilities in the catergorie owner equity i think. if not is it income statement or balance sheet.
asked by lily 
Math  Pre Algebra
$1280 at 13% compound annually for 3 years Use the formula: B= p(1+r)n Please help me I need the answer for tommorow
asked by Tanisha 
Science
What industries could be affected by offshore wind farms? Thank you!
asked by Mariz 
English
13. I am in the Seokmun gigong club. We meditate in the club room and control the breath. We learn how to control psychin energy by circulating ki. 14. I am in the sports newspaper club. We read news articles and talk about current news. 15. I am in the
asked by John 
College MATH
According to the New York Times/CBS poll of March, 2005, 87% agreed that it should be the government's responsibility to provide a decent standard of living for the elderly, and 54% agreed that it would be a good idea to invest part of their Social
asked by Sabrina 
English
1. The quilt club is greatly exciting. 2. The mountain climbing club is badly interesting. 3. The courses and careers club is great fun. (Can we say "...good fun"?) 4. The pingpong club is exceedingly interesting. 5. The robot manufacture club is
asked by John 
Math  Pre Algebra
Thank you soo much!! But can you show me the steps on how to caculate 1280(1.13)^3.
asked by Tanisha 
Language Arts
Homonym riddles; What did the big red bucket say to the small white bucket?
asked by Anonymous 
Geography
How does climate types found in East Africa influence what grows there? Thank You in Advance to whoever helps me!!
asked by Tanisha 
Pre Calc
From 2 points 400 yards apart on the bank of a straight river flowing due south, the bearings of a point on the opposite bank are 148 degrees and 28 degrees. How wide is the river? I am having a hard time understanding how this is set up. Help please?
asked by MW 
maths
i need to find out which of these is better value. £3.90 9 pack of toilet rolls or £2.50 6pack of toilet rolls. i think its th £3.50 but i am finding it hard to show the working out.
asked by lucy 
alagebra
Suppose you are an event coordinator for a large performance theater. One of the hottest new Broadway musicals has started to tour, and your city is the first stop opn the tour. You need to supply information to anticipate staffing needs until the tickets
asked by Anonymous 
Science
What industries could be affected by offshore wind farms? Thank you!
asked by Mariz 
math
does withdrawls fall in the catergorie income statement.if not please correct. the other two choices are statement of changes in owner equity or balance sheet.
asked by kneon 
science
I don't understand how to answer USE OF DATA in science labs.
asked by emma 
8th grade
essay on should students only have to take reading andmath to go to 9th grade agree or disagree?
asked by Robin 
Biology
Can you help me find statistics on the amount of people who suffer with genetic disorders/diseases every year or the amount of people who die from genetic disorders. Thanks a million.
asked by Selenia 
math
find the domain and range of the relation, and state whether or not the relation is a function. {(3,9), (3,10), (3,11), (3,12)}
asked by yorkie16 
math
find the domain and range of the relation and state whether or not the relation is a function. {(1,3), 2,3), (3,3), (4,3)}
asked by yorkie16 
math
find the coordinates of the xintercept. 2x + y = 6
asked by yorkie16 
language
POEM HI, can you check my poem suppose to be simile. WHO AM I A large black nose as dark as the night Two round eyes as big as the moon two fuzzy ears as soft as feathers she`s as friendly as a newborn baby pup she`s courageous as a lion I love her as
asked by john 
Math (simple)
3x+6x=18 Thanx!
asked by Anonymous 
IT
What are the functions of three common computer software applications for the business world available on the market today? How are they used in business organizations?
asked by Anonymous 
Econ
What exactly does capitalization ratio measure? My professor says it's computed by dividing capital by total assets. With regards to a bank what does the capitaliation ratio indicate? I do know that it measure risk but I don't understand how it measures
asked by Andrea 
Biology
Convert the following DNA sequence into its RNA equivalent and then using the genetic code, convert that RNA sequence into the amino acid sequence. 5â€™â€“TACTTCTTCAAGACT3â€™ For this above DNA sequence, what information is contained in the
asked by Sherri 
chemistry
Would a thioester hydrolyse faster or slower than a normal ester and why? I think the thioester is slower, but I'm not sure why.
asked by Beth 
social studies
What year did the War of 1812 occur?
asked by Logan:) 
Chemistry
_Mg(C103)2(s) > _MgCl2(s)+_02(g) What is the coefficient of 02 when the equation is balanced correctly using the smallest wholenumber coefficients?
asked by A 
Chemistry
I am filling out a chem packet. Is what graphite, diamond and fullerene have in common is that they're all made of carbon? My other problem is what are four alternative uses to copper for... 1)electrical wire 2)generators Are copper's two alloys calcolite
asked by Brielle 
AED 200
Identify the roles district, state, and federal government agencies have in your local schools. Which agency do you feel has the most significant influence in making policy and curriculum decisions at the local level? Why? Please help. I can not find any
asked by Ashley 
puzzles
does this puzzle mean "down to earth"  this is a box [ ] [ ] [ ] [ earth earth ] 
asked by Delaney 
Math
If I were to graph 20a+34b is greater than or equal to 240, which would be the easier way: graphing it by finding the x and y intercepts, or graphing it by finding the slope and yintercept?
asked by Angie 
history
please check these 1. in 1992, Carol MoseleyBraun became the first African American woman to a. run for Vice President b. be appointed to the Supreme Court c. be named Attorney General d. win election to the United States Senate D 2. In their 1994
asked by history 
4th grade
How can I find if I use interpolation or extrapolation when i estimated the volume of three marbles?
asked by christian gomez 
math 6th
s= salary each month $7514 < or equal to s < or equal to $11,267 how do you graph this
asked by hilary 
Math 4th grade
How can I know If I use interpolation or extrapolation after I estimated the volume of 3 marbles?
asked by christian gomez 
art survey
give several examples of editing techniques used in the production?
asked by tonya 
hca 230
compose a list of perspectives for patients i found a lot on caregivers but nothing on patients
asked by dawn 
Art
What important event happened in the netherlands which affected vincent van gogh?
asked by Hayley 
art survey
information ritual dance
asked by tonya 
Physics  urgent help needed
Explain using an example how to charge an object positively using only a negatively charged object.
asked by Sam 
english
i have to write a thesis on the movie freedom writers and im cluless i wathced the movie but am stuck any clues on what to do?
asked by matt 
accounting
does withdrawls fall in the catergorie income statement.if not please correct. the other two choices are statement of changes in owner equity or balance sheet.
asked by lily 
social studies
true or false:arts in the region include landscapes paintings calligraphy weaving carving and pottery making. PLEASE HELP ME!!!THIS PAPERS DUE TOMORRW AND I CANT FIND AN ANSWER
asked by nina 
History
What cartographer held or had a stake in the Mount Vernon Furnace from 18781882?
asked by Karen 
AP Literature
I'm doing a powerpoint presentation and I can't get the music to play throughout the whole entire presentation can you help me please
asked by Brandis 
Pre Calc
In triangle ABC, b=14, c=15, and cos a= 3/5. Find a)side a b) Sin B Help please?
asked by MW 
math
utilities expense in the catergorie income statement. i think. if not is it owner equity or balance sheet.
asked by kneon 
Math
How would I begin to simplify this?? (4((n(n+1)(2n+1))/6)4((n(n+1))/2)+n)/(4((n(n+1)(2n+1))/6))
asked by Katie 
Math  PreCalc
So far I got it down to ((4/3)n^3+(11/6)n^2)/((4/3)n^3)+(2n^2)+(2/3)n). Would I be able to cancel out the ((4/3)n^3)s? So that it would be ((11/6)n^2)/((2n^2)+((2/3)n))? Or can I simplify that even futher by combining the (n^2)s?
asked by Katie 
math
if you have the triangle ABC with the points A(47,100) B(1273,203) and C(971,732) how would you find the center and the radius of the incircle of triangle ABC?
asked by kim