Questions Asked on
March 29, 2009

Chemistry
Topic: Sublimation and Fusion How much heat (in kJ) is required to warm 13.0 g of ice, initially at 14.0 C, to steam at 112.0 °C? The heat capacity of ice is 2.09 J/g⋅°C and that of steam is 2.01 J/g⋅°C. Any help on how to start this is really
asked by Pete 
HS Calculus
Having trouble with this questions. Please help. A particle moves on the xaxis so that its position at any time t (is greater than or equal to) 0 is given by x(t) = 2te^t a) Find the acceleration of the particle at t=0 b)find the velocity of the particle
asked by Jane 
Solution Stoichiometry
If 75.0 mL of an AgNO3 solution reacts with enough Cu to produce .25g Ag by single displacement, what is the molarity of the initial AgNO3 solution if Cu(NO3)2 is the other product?
asked by Anonymous 
science
Why are new ideas often rejected, and what is needed before new ideas should be accepted?
asked by nataline 
Spanish
Fill in the correct possessive adjectives. 1. su libro (his) 2. nuestro padre (our) 3. sus abuelos (their) 4. tus primas (your, familiar singular) 5. tu familia (your, familiar singular) 6. nuestros primos (our) 7. mis gatos (my)
asked by Larry 
Chemistry
A zinccopper battery is constructed as follows. Zn  Zn2+ (0.70 M)  Cu2+ (2.30 M)  Cu The mass of each electrode is 200. g. (a) Calculate the cell potential when this battery is first connected. 1 V (b) Calculate the cell potential after 10.0 A of
asked by Amy 
Quadratic Equations
The height of an object projected upward from ground level is given by h=16t squared + 128t. When will the object be 240 feet above the ground? (Please provide steps/explanation to solve this problem.)
asked by purpletree 
Algebra 1 8th Grade
What is the relationship between the xintercepts of a parabola and its vertex's xcoordinate?
asked by Nancy 
AP Chemistry
In the titration of 50.0 mL of 1.0 M CH3NH2 (kb=4.4 x 10^4), with 0.50 M HCl, calculate the pH a) after 50.0 mL of 0.50 M has been added b) at the stoichiometric point.
asked by some kid 
Stoichiometry Problem?
How many Milliters of 18.0M H2SO4 are required to react with 250mL of 2.50 M Al(OH)3 if the products are aluminum sulfate and water?
asked by Anonymous 
business help
16. (TCO 2) Which of the following is the most important step to help improve America's business ethics? Middle management support. Training.  Enforcement. Identification of the organizational ethics officer. 17. (TCO 2) Top leaders in government and
asked by Bryan 
Science  Biology
Please can someone help me! I've got to do a biology experiment to Investigate the relationship between reaction temperature and the effectiveness of action of the enzyme amylase on starch. I really don't know what it is all about pls someone help :)
asked by Kate 
Economics
Suppose that a firm is currently employing 30 workers, the only variable input, at a wage rate of $60. The average product of labor is 30, the last worker added 12 units to total output, and total fixed cost is: $3,600. a. What is marginal cost? b. What is
asked by eStone 
Physics
In 1989, Carl Lewis established a world record when he ran the 100 meter dash in 9.92 seconds. What was his average speed(in m/s) for the race? Remember to include your data, equation, and work when solving this problem. I am not sure how to do this
asked by Jake 
Statistics Help
A medical statistician wanted to examine the relationship between the amount of sunshine (x) and incidence of skin cancer (y). As an experiment, he found the number of skin cancers detected per 100,000 of population and the average daily sunshine in eight
asked by Stuart 
Quadratic Equations
The longer leg of a right triangle is 3 ft longer than three times the shorter leg. The hypotenuse is 3 ft shorter than four times the shorter leg. Find the lengths of the three sides of the right triangle. (Please provide steps/explanation to solve this
asked by purpletree 
math3
how do u write 7/33 as a decimal
asked by rocks 
Statistics
A monthly report to the Texas Department of Health, division of Water Hygiene, contained the following water production data in thousands of gallons: 5263 5636 5264 4395 6090 5293 4668 5725 5171 4378 5118 5538 4838 5167 5119 5438 6843 5262 4653 5303 5913
asked by Stuart 
math
write each expression without using the factorial symbol. 1)(n3)!  n! 2) (n+4)!  (n+2)!
asked by sh 
Physics
Find the energy necessary to put 5kg , initially at rest on Earth's surface, into geosynchronous orbit. Do I use the formula U=GMm/r G=6.67*10^11 M=2.5*10^24 m=5 r=41000 Is this sort of right, any help would be greatly appreciated.
asked by James 
Quadratic Equations
The height of an object dropped from a 100fttall building is given by h=16t squared + 100. When will the object hit the ground? (Please provide steps/explanation to solve this problem.)
asked by purpletree 
english
1. Rewrite sentences using the Passive They’re going to open the sports complex next week. The sports complex... The USA manufacture a lot of sports equipment A lot of sports equipment... They’re building some tennis courts in the park. Some tennis
asked by Joan 
Statistics I think I have the answer
The salaries (in thousands of dollars) for a sample of 13 employees of a firm are: 26.5, 23.5, 29.7, 24.8, 21.1, 24.3, 20.4, 22.7, 27.2, 23.7, 24.1, 24.8, and 28.2. Compute the variance of the salaries. a)2.562 b)6.125  I Picked this c)9.223 d)7.097
asked by Stuart 
Please helpGeometric series
I need to find the equations of the following, using Ó (and the n=1 which is at the bottom of the Ó) (and infinity is at the top of the Ó) 1) 5/1 + 8/1 + 1/1 + 14/1 + . . . 2) 6/5 + 9/8 + 14/11 + 21/14 + . . . 3) 6/3  4/4  2/5  0 + . . . 4) 9/1 +
asked by Janet 
chemistry
Ok, I'm sure this is a stupid question, but when I try to break down the following equation to its net ionic equation, all of the elements cancel out. I'm obviously doing something wrong... Can anyone help with the net ionic equation for: Fe(NO3)3 (aq) +
asked by lholmq 
social civics
the Monroe Doctrine stated that the United States would not intervene in the affairs of countries in latin America? true or false
asked by Austin 
Business Statistics
) A sample of eight observations of variables x and y is shown below: x 5 3 7 9 2 4 6 8 y 20 23 15 11 27 21 17 14 Find the value of coefficient of correlation, r. a)  0.991 b) 0.872 c)  0.512 d) 0.942 2) In the past, young women drivers have maintained a
asked by Stuart 
health
which of the following structures are regions of the lungs? a. frontal, maxillary, sphenoidal, ethmoidal b.eustachian, pharynx, bronchi c. cilia, adenoids, mucous, epigilottis d.apex, base, hilum d could someone check my answer
asked by Anonymous 
Calculus
Here's another one that I do not really understand. A company estimates that the cost (in dollars) of producing x units of a certain product isgiven by: C=800 + .04x + .0002x^2. Find the production level that minimizes the average cost per unit.
asked by Jane 
math
What is 1 1/2 times of 14?
asked by ztan 
6th Grade Science
What are: Groups of similar cells doing the same work? Organs working together? A long branched type of cell that sends messages quickly? Cell surrounded by calcium and phosphorous? Cells in many celled organisms are ______? The smallest living unit
asked by Brandi 
history
I am doing a history project about Martin Ward's eviction in Loughrea town in Ireland, 1906, I already found some informations in local library however it is still not enough and i really cannot find anything more, maybe you have something? I also tried to
asked by susan 
math
Write the expression without using the factorial symbol. (n+1)!/(n1)! my work: (n+1)!/((n+1)(n1)!) =1/(n1)? Thanks in advance.
asked by sh 
chemistry
Why does a solute dissolve faster in hot water than cold?
asked by Michelle 
health care
Write a 350 to 700word paper in APA format describing two approaches or indicators to measuring patient outcomes. Measuring the quality of care is essential to being able to identify which areas of patient care need improvement. A positive patient
asked by doannial 
Program Planning and Grant Proposing Writing in Hu
Expain the relationship between planning and grant proposal. When describing each component address their similarties and differences and how they relate to each other.
asked by Anonymous 
Physical Science [repost]
needed help on these 3 questions that I don't quite understand. Can someone please explain to me how to solve the answer? Use this scenario to answer questions 13: A car crashes in a tree at a velocity 26.6 m/s. The passenger in the car is wearing a seat
asked by mysterychicken 
chem
If pentane,hexane and hexanol are heated evenly at different altitudes, rank them according to the order in which you would expect them to begin boiling.
asked by alisha 
american education
identify the main characteristics of Progressivism, Reconstructionism, Positivism, Constructivism, Behaviorism, Humanism, and Essentialism
asked by scooby91320002 
English
I pretend I am a PD. I will make an educational program. I will call it "Let's Learn Japanese". I need two native speakers and a Japanese teacher. With the help of the nateive speakers, the teacher can make a good textbook. The native speakers can talk
asked by John 
History
How have the lessons learned from the Holocaust changed the world? What do you think has happened and how we are continually surprised when there are bad people doing evil things in the world.
asked by Peter 
2nd grade
How can I figure out the perimeter of a shape?
asked by Dan The Man 
History
Can you please explain this to me the best that you can? GP would create tolerance because everyone would be in each other's space due to overpopulation. What is a good follow up sentence to put after that.
asked by Kara 
history
I'm doing an essay on the new world mystery and about England and Spain's economies during that time, the 16th18th centuries. I have to write an essay (letter) to the King of Spain or the King of England telling them what they could do to change it. I'm
asked by anonymous 
sciences
you and your partner are about to toss 2 coins 100 times. Predict about how many times the outcome woukd be. a. headsheads b. headstails c. tailsheads d. tailstails  My answer is 25% for each toss. you need to EXPLAIN your answer. HELP HELP HELP ME!
asked by jouan 
Quadratic Equations
Find two consecutive integers, the sum of whose squares is 1 more than twelve times the larger. (Please provide the steps/explanation for solving this problem)
asked by purpletree 
AE....
what are teachers Rights and Responsibilities
asked by scooby91320002 
Math 10 xintersept yintersept
Please help me with this question Q:For each line,determine the xintersept,the yintersept,and the slope a) 2x5y+10=0 b)4x+y12=0 please explain carefully , I'm dumb... thank you
asked by Rach 
Algebra
Factor x^2  3xy  18y^2 I am not too sure if this is right, but any help is appreciated! Thanks! (x – 6y) (x + 3y) is this correct?
asked by Loren 
History
1. Why is American participation in the Great War important? 2. What were the "acids of modernity" that began to reshape American society in the 1920s? How did they achieve this? 3. How would you characterize the cultural and political temper of 1920s
asked by Ryan 
Chemistry
1.) The average velocity of Cl(2) molecules is 2.50 x 10^3 m/sec at a temp of 25 C therefore the average velocity of helium atoms is ?? [ i got the answer 5.94 x 10^2 m/Sec is that right] 2.) A gas is allowed to expand from 1.5 : to 12.5 L against a
asked by Emmanuel 
7th grade
What types of landforms are found in Aruba I only found the Hooiberg which is a mountain are there any other landforms. Thanks
asked by Brooke 
science
what is the outermost layer of earth's surface
asked by sara 
business
Identify and explain how the four steps to change the mental models/mindsets can help General Motors. The four steps are recognizing, test, overcome, and transform GM’s mental model/mindset: GMs management is pushing electric vehicle technology I am
asked by Christina 
Maths  Matrices
I'm having trouble with doing this matrix proof The question is "Given some matrix A has the property A*2=A^1, show that determinant A = 1, i.e A = 1" I've tried for ages, but I can't seem to do it, this is what I got to A^2= A^1 A^2 = A^1 A^2 =
asked by TP 
Ict
My homework assignment is to design an antibullying logo. I thought of a computer and then putting Stop cyber bullying now! but i don`t know . any ideas? i have looked on different websites but can`t find anything. thanks
asked by Tobie 
AED 205
What does the saying "don't smile till Christmas mean?
asked by Nicole 
Geometric series
please help with finding the equations to these where n= 1; which means 1 is needed to find the first number in the series 1) 5/1 + 8/1 + 1/1 + 14/1 + . . . 2) 6/5 + 9/8 + 14/11 + 21/14 + . . . 3) 6/3  4/4  2/5  0 + . . . 4) 9/1 + 36/4 +27/9 + 144/16 +
asked by Janet 
Quadratic Equations
The height of a triangle is 1 in. more than twice the base. Find the base and the height if the area of the triangle is 521/2 sq in. (Please provide steps/explanation to solve this problem.)
asked by purpletree 
history
1. what was one result of the baby boom? a. overcrowding became a problem. b. families had to buy a second car. c. families moved from cities to the suburbs. d. all the above. answer c 2. In the 1950 men roles included all of the following except a. going
asked by LaNoria 
psychology
Explain what role psychology has played in understanding and managing these health problems. Migraines and Coronary heart disease
asked by latham 
Physics
The escape speed from a planet of mass 2.5×10^24 is 7.0 km/s.What is the planet's radius? Iam using the formula v=sqr(2GM/r) v=7 G=6.67*10^11 M=2.5*10^24 r=? I get 6.8*10^12 Where did I go wrong?
asked by James 
Business writing
Write a memo of 6–15 sentences based on the scenario given here. You’ve been put in charge of planning a oneday departmental training seminar with Dr. Melanie Dobler as the speaker. You must make travel arrangements for the speaker, reserve a company
asked by Anonymous 
Sleeping.
Is sleeping a waste of time? Now that I think about it, sleeping seems like a waste of time.
asked by Chopsticks 
English
1. Is "Snow White" on TV an animation program or an animated program? 2. This is a chef. He made a delicious food for his father. On the right side, there are various fruits. On the left side we can see food made of fruit. In the middle of the picture,
asked by John 
math
how do i factor 3y^2+y10
asked by Debbie 
Statistics Help Please
A sample of eight observations of variables x and y is shown below: x 5 3 7 9 2 4 6 8 y 20 23 15 11 27 21 17 14 Find the value of coefficient of correlation, r. a)  0.991 b)0.872 c) 0.512 d)0.942
asked by Stuart 
Statistics Help
Six candidates for a new position of vicepresident for academic affairs have been selected. Three of the candidates are female. The candidates’ years of experience are as follows. Candidate Experience Female 1 Female 2 Female 3 Male 1 Male 2 Male 3 5 9
asked by Stuart 
AE
How will responsibilities as a teacher influence the rights of a student?
asked by scooby91320002 
To Akashdeep Singh
Since your question had to do with computer games, not homework, it has been removed. Please post only homework questions here. Thanks.
asked by Writeacher 
AE
Is it fair to infringe on students' rights for the sake of the learning environment? Why or why not? I am not sure what they are asking
asked by scooby91320002 
English
Posted by John on Sunday, March 29, 2009 at 4:11pm. 1. Is "Snow White" on TV an animation program or an animated program? 2. This is a chef. He made a delicious food for his father. On the right side, there are various fruits. On the left side we can see
asked by John 
Health of young children
Why is the incubation stage of an illness of concern to day care workers? A.Children in this stage require a great deal of care and special attention. B.Children in this stage often need special medical help. C.Children in this stage can often pass on the
asked by Cynthia 
AE
Describe a experience where a teacher's responsibilities limited the students' rights.
asked by scooby91320002 
History
How does overpopulation create starvation. What are some strong reasons besides people fighting over food.
asked by Kara 
social studies
I am trying to unsramble a city the word is i tall tacks ye. Thanks
asked by diana 
reading
what does this qoute mean: "Forgive your enemies but never forget their names." John !@#$%^&enedy
asked by sara 
science
what is an area where an oceanic plate goes down into the mantle
asked by mike 
Math
whats the answer to 2 raised to 4x+1=3 raised to 1x
asked by Audrey 
Logging in.
What is the purpose of the login function on this website? You can always change your name to whatever you want, so why even have it there?
asked by Chopsticks 
history
the earliest foreign policy of the United States was to avoid entangling alliances. true or false
asked by ted 
8th Algebra
If S represents the greater of the two solutions of the equation x^2  4x  3 = 5, then : A) S>3 B) S
asked by Joy 
8th grade
what role does lena play in the book copper sun
asked by jaritza 
General
Do you know of any website where i can find the average age that people live up to in different countries?
asked by Ryan 
social
Amount of people that Hagia Sophia can hold? i don't get it from the one Guru.. posted.
asked by Anonymous 
Algebra
Add. (8n6  6n  5n4) + (2n4 + 2n6 + 3n) I think I have this answer but am not sure if its 10n^6  3n^4  3n OR 10n  3n^6  3n^4 I am pretty confident on the first answer. Any help is appreciated! Thanks!
asked by Michelle 
Algebra
Add The following (8n^6  6n  5n^4) + (2n^4 + 2n^6 + 3n) I think that this is the answer but am not sure. 10n^6  3n^4  3n
asked by Michelle 
Chemistry (Acids and Bases)
I just did a lab on Acids and Bases and I am having trouble with the lab questions I was given to complete. Concentration of NaOH: 0.09999 M Volume of NaOH: 3.25 mL # moles of NaOH: 0.325 moles Initial Concentration of Weak Acid: ? (How do we calculate
asked by Lalu 
havelock high
An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT? A) a ball striking a wall, in which the force of the ball
asked by marty 
physics
Which will result in the greatest acceleration? 56 N action on a 1kg box 56 N acting on a 2kg bag 23 N acting on a kg bag 23 N acting on a 5kg bag
asked by Tiara 
Statistics
I have a question that involves explaining what is wrong in each of the following situations: (a) A random sample of size 20 is taken from a population that is assumed to have a standard deviation of 12. The standard deviation of the sample mean is 12/20.
asked by Lynn 
math
how do i find the square root of 50x^10
asked by Debbie 
math
(z^6)^5 simplify
asked by Debbie 
math
simplify 2u^5x^5*2w^8u^5x^5*3w^7
asked by Debbie 
Physics
On August 20, 1989, in Cologne, West Germany, Said Aouita of Morocco also established a world record when he ran the 3000 meter run in 7.00 minutes 29.45 seconds. What was his average speed (in m/s) for the race? Do I divide 3000 by 7 minutes and 29.45
asked by Jake 
science
What is the unit for magnetic circuit?
asked by Ellie 
Accent Marks
I need help when you type boeuf in french how to you make the "o" and the "e" come together.
asked by Anonymous 
Geomtric Series
I need to find the equations of the following, using Σ (and the n=1 which is at the bottom of the Σ) (and infinity is at the top of the Σ) 1) 5/1 + 8/1 + 1/1 + 14/1 + . . . 2) 6/5 + 9/8 + 14/11 + 21/14 + . . . 3) 6/3  4/4  2/5  0 + . . . 4) 9/1 +
asked by Janet 
7th grade
Does anyone know what the vegetation breakdown is for Aruba. Examples grasslands,forests and deserts? I know that it is pretty scarce but if anyone has any websites that might have some sort of vegetation this would be great thanks.
asked by Brooke 
Algebra
I need to simplify this equation. I think this is the correct answer but would like a second opinion. Thanks! Ok here it is 20 X 10^7/5 X 10^3 I got 4 X 10^4 Is this right?
asked by Breanna 
Statistics
Intentions of consumers regarding future automobile purchases and the financial capability of the consumers are given below: What is the provability of P(A  D)? a)0.5 b)0.75 c)1 d)0
asked by Stuart 
Social Studies
How many rooms are usually inside a poor village?
asked by Amy 
Heath (quick question pplz read)
Does everyone like white milk?
asked by Anonymous 
AE ( last and final one)
describe a situation in which the students’ rights might override a teacher's responsibility to maintain a safe learning environment. I can not think of any
asked by scooby91320002 
reading
what those this quote mean: "The world is full of willing people to work, the rest willing to let them" Rober Frost
asked by sara 
HELP ASAP BIO EXAM TOMRROW
what is the purpose of step 5 in glycolysis. Can pyrutate be made without the enzyme that catalyzes step 5? In this step(5), two main events take place: 1) glyceraldehyde3phosphate is oxidized by the coenzyme nicotinamide adenine dinucleotide (NAD); 2)
asked by cubanita 
science
why does the carbonated drink pitted the iron nail? thanks!
asked by al 
science
how are hearing and touching different
asked by john 
science
what is the largest layer of earth's surface , composed mostly of silicon,oxygen,magnesium,and iron
asked by sara 
SraJMcGin are you still here
I'll post my finished work when you answer me that you are still online
asked by Destiny 
social civics
Before the Civil war a policy of free compulsory education had been adopted throughtout the United States? true or false
asked by Austin 
Program Planning and Grant Proposing
Expalin the relationship between planning and grant proposal. When describing each component address their similarities and differences and how hey relate to each other.
asked by Lisa 
social civics
Under the Monroe Doctrine European powers were allowed to intervene in the affairs of independent countries of latin America? true or false
asked by Austin 
math
Use the graph, showing the yearly food costs of a family. What was the percent decrease in the cost of food from 2003 to 2004? Your answer must be a percentage. 2003 is 10,500 and 2004 is 9,500
asked by jp 
science
momentum (p) is 88 kg * m/s, velocity (v) is 2 m/s. find mass (kg)
asked by kathy 
9th grade
9 divided by radical 27a to the fifth power
asked by mike 
social
Amount of people that Hagia Sophia can hold?
asked by Anonymous 
english
How do you write the lines of a play in MLA format? Would it look like this: “And she in mild terms begg'd my patience, / I then did ask of her her changeling child"
asked by Takada 
ictSraJMcGin
Sorry i didn`t reply sooner ive only just looked at the post.Thankyou so much for finding the images it was kind of you to use the time you had spare to help me. thanks again:)
asked by Sydney 
health
In which condition is the patient most likely to hemorrage? a.thormbocytopenia b.polycythemia c.thalassemia d.erythroblastosis fetalis (c) could you please check my answer?
asked by Anonymous 
calculus
What is the period of y=5 cos pi x and how do you find it?
asked by lilbits 
Anatomy
What accounts for more than 60% of the total bran weight? I looked in my book and it said one part accounted for 85% and then another part said 40%. I think it's the cerebral hemispheres, but I don't know for sure.
asked by Katie 
History
Which of the 1st explorers made one of the 1st maps of the North American coast?
asked by Philip 
trig
The period of y=5 cos pi x is 2 but I don't know how to find it.
asked by lilbits 
Quadratic Equations
The length of a rectangle is 5 ft more than the width. If the area of the rectangle is 36 sq. ft what are the dimensions of the rectangle? (Please provide steps/explanation to solve this problem.)
asked by purpletree 
7th grade
Does anyone know what aruba's primary, secondary and tertiary industries and were i can find information on them?
asked by Brooke 
Math
need to find the equations of the following, using Ó (and the n=1 which is at the bottom of the Ó) (and infinity is at the top of the Ó) 3) 6/3  4/4  2/5  0 + . . . 4) 9/1 + 36/4 +27/9 + 144/16 + . . . 5) 20/4 + 25/5 + 30/6 + 35/7 +40/8 + ... i
asked by Janet 
Chemistry
I just did a lab on Acids and Bases and I am having trouble with the lab questions I was given to complete. Concentration of NaOH: 0.09999 M Volume of NaOH: 3.25 mL # moles of NaOH: 0.325 moles Initial Concentration of Weak Acid: ? (How do we calculate
asked by Lalu 
Physics E=mc^2
Can you explain what formula (like quadrantic..whatever formula) and what is it for. The equation E=mc^2. Thanx!
asked by John 
calculus
i have to integrate using u substitution, but i am not sure if i did it correct. çtan^3(5x)sec^2(5x)dx u=5x du=5dx 1/5du=dx 1/5çtan^3(u)sec^2(u)du 1/5tanusec^2u+c 1/5tan(5x)sec^2(5x)+c
asked by Devon 
French
Could you translate this in french for me because I don't want to have anything wrong with mine. I appreciate my dad for doing the grocery shopping for the family because he buys healthy foods for us and he knows what kind of foods we like and don't like.
asked by Destiny 
Algebra
What is the value of (10^3 * 10^4)^2 I think the correct answer is supposed to be 1/100, but I don't know how to get to this point. Thank you! :)
asked by Cassie 
Algebra
What is the value of 3²/3^1? I figured out that 3² is 9 and that divided by 3^1 was 30, but that was not one of the listed answers. Where did I go wrong and what is the correct answer? Thank you! :)
asked by Cassie