Questions Asked on
August 3, 2010

chemistry
I have posted this once and still cannot get the correct answer. Determine the mass of carbon monoxide that is produced when 45.6 of methane, CH4, react with 73.2 g of oxygen , O2. The products are carbon monoxide and water vapour.
asked by Kelsey 
trigo
A space shuttle pilot flying toward the Suez Canal finds that the angle of depression on one end of the canal is 38.25deg and the angle of depression to the other end is 52.75deg. If the canal is 100.6 mi long, find the altitude of the space shuttle.
asked by trigofunctions 
trigo
A submarine at the surface of the ocean makes an emergency dive, its path making an angle of 21deg with the surface. a. If it goes for 300 meters along its download path, how deep will it be? What horizontal distance is it from its starting point? b. How
asked by trigofunctions 
American Gov't
I'm not sure which to pick? What is the term limit for senators? Two terms=not correct Four terms= not correct Six terms=? There are no term limits=? Iknow its not the first two but in my text material it says every 6 years but then again it also says
asked by Ariel 
math
the product of two positive numbers is 9 18/25 and one of them is three times the other. find the numbers.
asked by shahida 
ENGLISH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Read each sentence. Select the BEST option that describes the sentence. Some options will define a structural flaw and may or may not suggest a way of fixing the problem. Some sentences have correct structure, and you may find that is the best option.
asked by ARC 
trigo
Because of the wind, a boat sails 4,728 meters in the direction S 47deg29mins W. How far south it goes? How far west has it gone?
asked by trigofunctions 
9th grade
At a certain time, a vertical pole 3 meters tall casts a 4 meter shadow. What is the angle of elevation of the sun? Round your answer to the nearest meter
asked by nae 
Science
Consider the following reaction: 2Na + Cl2 2NaCl ΔH = 821.8 kJ (a) Is the reaction exothermic or endothermic? (b) Calculate the amount of heat transferred when 5.6 g of Na reacts at constant pressure. (c) How many grams of NaCl are produced during an
asked by Joseph 
chemistry
A small “coffee cup” calorimeter contains 110. g of H2O at 22.0°C. A 100. g sample of lead is heated to 90.0°C and then placed in the water. The contents of the calorimeter come to a temperature of 23.9°C What is the specific heat of lead?
asked by Joseph 
geogerafy
discuss the various levels of economic activities and how they are linked to the use of natural resources. Use examples to improve your answer.
asked by Anonymous 
maths
tanA/secA1 + tanA/secA+1 = 2 cosecA
asked by sakeena 
Physics
A bullet with a mass of 4.0 g and a speed of 650 m/s is fired at a block of wood with a mass of 9.7×10−2 kg. The block rests on a frictionless surface, and is thin enough that the bullet passes completely through it. Immediately after the bullet exits
asked by Todd 
math
Multiplying and Dividing Rational Expressions: 2) x^28x+7/x^2+6x7 = (x7)/(x+7) 3) x^25x+6/x+4 times 3x+12/x2 =3(x3) 4)2x3/5x+1 divided by 6x^213x+6/15x^27x2=1 5) x^39x/x^2+11x+24 times x^2+7x8/x^24x+3= x(x3)(x1)/(x+3)(x+8) 6) 4x8/x^2x6
asked by Jetta 
human growth and development
Both before and after birth,physical development follows the cephalocaudal principle and the proximodistal principle.Which pair pf events below best illustrates first cephalocaudal,then proximodistal development? a)Izzy could clap his hands stamp his feet
asked by vedrana 
Physics
A 90 kg astronaut and a 1100 kg satellite are at rest relative to the space shuttle. The astronaut pushes on the satellite, giving it a speed of 0.24 m/s directly away from the shuttle. Sevenandahalf seconds later the astronaut comes into contact with
asked by Todd 
Physics
A 1.10 kg} block of wood sits at the edge of a table, 0.790 m above the floor. A 1.10×10−2 kg} bullet moving horizontally with a speed of 725 m/s embeds itself within the block. What horizontal distance does the block cover before hitting the ground?
asked by Todd 
Algebra 2
Story problems are my favorite. However, I can not figure this one out. THe stopping distance d of a car after the breaks are applied varies directly as the square of the speed r. If a car traveling at 70mph can stop in 270 ft. How many feet will it take
asked by Christy 
physics
if a negative charge particle is placed on the left side and a higher positive charge particle is placed on the right side, why is the location that makes electric field zero is on the left of negative charge rather than in between or on the right of
asked by blast 
trigo
The pilot of an airplane left A and flew 200 miles in the direction S 20deg20mins W. He then turned and flew 148 miles in the direction S 69deg40mins E. If he now heads back to A, in what direction should he fly?
asked by trigofunctions 
trigo
An observer at A looks due north and sees a meteor with an angle of elevation of 70deg. At the same instant, another observer 30 miles east of A, sees the same meteor and approximates its position as N 50deg W but fails to note its angle of elevation. Find
asked by trigofunctions 
AP chemistry
A 28 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to Fe2O3. The mass of Fe2O3 is measured to be 19.5 g. What was the mass of iron in the sample of ore? Answer in units of g.
asked by Tasha 
human growth and development
Marty's moral reasoning was tested with Kohlberg's moral dillemmas.It was determined that Marty has reached Kohlberg's highest level of moral reasoning,postconventional.We know ,therefore,that Marty: a)will always act in accordance with postconventional
asked by vedrana 
Chemistry  please help
Please help to determine the (%w/w) benzoyl peroxide (C14H20O4) in a sample. Procedure: 2.500g of sample was dissolved in 75ml dimethylformamide and diluted to 100.0ml with the same solvent. (Solution T). To 5.0ml of Solution T, 20ml of acetone and 3ml of
asked by angela 
human growth and development
According to Costa and MCrae five factor model of psychosocial development in adulthood,we can expect that our personalities are likely to: a) remain fairly stable over the course of our adult lives b)change a great deal between young adulthood and middle
asked by vedrana 
trigo
Two points, A and B, are 526 meters apart on a level stretch of road leading to a hill. The angle of elevation of the hilltop from A is 26deg30mins, and the angle of elevation from B is 36deg40mins. How high is the hill?
asked by trigofunctions 
English!
i need help finding couple of The Qualifications Necessary to Success in Life for my essay...i got 2...which are good attitude and good education(in the "good education" paragraph i added jobs and money)...thnx!
asked by Thara 
Chemistry
Please be specific. In an experiement 23.4 g of iron sulphide, FeS are added to excess oxygen, and 16.5 of Iron oxide, Fe2O3 are produced. The balanced euation for the reaction is 4FeS =7O2  2Fe2O +2SO2. Calculate the percent yield of iron oxide in the
asked by Kelsey 
Physics
A diesel engine takes in 0.5 moles of air at 20.0C and at atmospheric pressure. It then compresses it adiabatically to one twentieth of its original volume. which means n = 0.5 T = 20 and Vfinal = V1/20 but where do I go from here? can anyone help?
asked by Physics 
math
Jim was able to sell a hand carved statue for 670$ which was a 35% profit over his cost. How much did jim pay?
asked by pyt 
calculus
find the equation of the tangent line at the given value of x on the curve 2xy2x+y=14, x=2
asked by a 
social studies
Personality psychologists are concerned with ______________ in a given situation. average behavior crowd behavior individual differences in behavior all of these
asked by Tina 
applied chemistry
A sample of oxygen occupies 10.0 L under a pressure of 105 kPa. At what pressure will it occupy 13.4 L if the temperature does not change?
asked by chris 
english
compare and contrast the conflicts in john updike's "son" and julia alvarez's "daughter of invention"
asked by pam 
trigo
Points A and B are on the same horizontal line from the foot of a hill and the angles of depression of these points from the top of the hill are 30deg and 22deg, respectively. If the distance between A and B is 75m, what is the height of the hill?
asked by trigofunctions 
trigo
A passenger on a ship sailing north at 5.0 mph noticed that at noon a radio tower on land was due east of the slip. At 1:30pm, the bearing of the tower from the ship was S 35deg E. How far was the ship from the tower at 1:30pm?
asked by trigofunctions 
wo9rld history
what dose a 16 making pictures of a bomb and threating a school have in comman with world history what is the text to text to that
asked by jess 
Math
A cookie sheet measures 13 x 9 inches. If each cookie has a diameter of 3 inches, how many cookies could fit on the sheet? You need to allow for 1/4 inch around each cookie.
asked by Julie 
science
what is the appearance of: Iron? Sulphur? A mixture of both when heated?
asked by grace 
Math
t/6  t/14= 1/6 Is there a solution for this problem?
asked by Amber 
Algebra
Find the LCM 35b^4c^5,7b^4c^4,10b^9c^3 Would the answer be 70?
asked by Bailey 
macroeconomics
Atlantis is a small, isolated island in the South Atlantic. The inhabitants grow potatoes and catch fresh fish. The accompanying table shows the maimum annual output combinations of potatoes and fish that can be produced. Obviously, given their limited
asked by Regina 
Math word problems
To determine the number of deer in a game preserve, a conservationist catches 428 deer, tags them and lets them loose. Later 644 deer are caught.161 of them are tagged. How many deer are in the preserve?
asked by George 
Math
Simplify Completely: 1260/4410 How is this process accomplished? I spend 1 hour trying each number trying to factor the numerator and denominator squared or cubed and get too frustrated, resulting in no answer at all Thanks for your help!
asked by Julie 
algebra
2. Biologists want to set up a station to test alligators in the lake for West Nile Virus. Suppose that the costs for such a station are $3000 for setup costs and $2.00 to administer each test. e. How many animals should be tested for the average cost to
asked by rj 
human growth and development
Gateway drugs are so named because their use may lead to use of more addictive substances.Long term,heavy use of marijuana: A)is not as dangerous as once thought B)is not as commonly used as cocaine C)can impair memory and attention D)is the leading cause
asked by vedrana 
Biochem
10ml of HCl acid titrate with 9.9ml of NaOH. What is the mass in grams of HCl?
asked by Amrik 
Math
A tank in the shape of a cone has a diameter of 8 feet and a height of 10 feet.when there is water in the tank, th water is in the shape of a cone too. find the radius of the cone of water when the water is 2 feet high. Explain how you would solve it.
asked by Cynthia 
geometry
M and N are the midpoints ofandrespectively. Using graph paper, repeat this process from the last problem using different coordinates for P, Q, and R. How do these lengths MN and PQ compare now? What do you think you can conclude about the lengths of these
asked by anonymous 
economics
Is the mrts? a. minuse one times the ratio of marginal products for ea. input? b. the slope of the marignal revenue product curve c. the marginal products of either input d. the slope of an icocost curve
asked by bj 
English
I need help figuring out what strategy is used to begin a essay. Is it Development by example, process analysis, comparison and contrast, definition, classification or causal analysis? Last June, as I stood behind the bright orange guard door of the
asked by Keisha 
Math 208
Graph y
asked by Jackie 
Physics  Inertial frame of reference
Identify the defining characteristic of inertial and noninertial frames of reference. Give an example of each type of frame of reference.
asked by Shaila 
RepostChemistry please help
Hi, sorry I missed out something. The titrant used was 0.100M Sodium thoiosulphate.Do I have to consider its concentration in the calculations? Thanks a lot. Posted by angela on Tuesday, August 3, 2010 at 6:58pm. Please help to determine the (%w/w) benzoyl
asked by angela 
writing sentences and paragraph assignment
I have to write these paragraphs for a writing assignment and just wasn't sure is I was doing it right. Need some advice!! ASSIGNMENT: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and
asked by courtney 
Economics
Whenever an industry fails to achieve allocative efficiency by producing too little output, a shortage arises. What is wrong with this statement
asked by Anonymous 
math
The difference between Molly and Chase's age is 35. if Molly is 3 times Chase's age plus an additional 10 years,how old are they?
asked by sam 
Algebra
(x^2 + x) + ã(x^2 + x)  2 = 0
asked by Jameisha 
english/grammar
I am writing a persuasive essay. I have my facts, but only one source. My teacher insists that I provide more sources. I have been looking for days in a variety of ways and have found nothing. My essay argues that renting saves time and money compared with
asked by Alicia 
algebra
2. Examine the rise in gasoline prices from 1997 to 2006. The price of regular unleaded gasoline in January 1997 was $1.26, and in January 2006, the price of regular unleaded gasoline was $2.31 (“Consumer price index,” 2006). Use the coordinates (1997,
asked by Bubba 
trigo
A surveyor made the two sections of the railroad bridge, both at 210 meters in length. Suppose that the maximum angle of elevation of each section is 75deg. When the bridge is closed, the water level is normally 13 meters below the bridge. a. When the
asked by trigofunctions 
cell biology
draw the structure 1palmitoyl2snglycero3phosphoinositol.using the drawing, illustrate the difference between saturated and unsaturated fatty acids 16:0 and 18:1, n9
asked by kim 
writing
A résumé that is marred by grammatical errors, for example, may prevent a job candidate from progressing to the interview stage. Do you think it is appropriate for people to be judged based on their writing? Explain your answer.
asked by Anonymous 
the american free enterprise system
a market in no one controls the prices is called
asked by bettyrobinson 
US History II
Would the NASA spacecraft landing on Mars be somehow related to the Republican victory in Congress of 1994?
asked by Amy~ 
English
I need help finding two interesting novels which have the same theme that could be compared in an essay. Can any one suggest me any number of novels which would be worth reading and writing an essay about. I like reading murder and romance novels.
asked by Shaila 
Chemistry Please help
Compare the chemical composition of biofuel and biogas to carbon dioxide which is the product of complete oxidation of glucose? Any help is greatly appreciated.
asked by Sandi 
American Gov't
These are the problems I had difficulty with out of 35! 1.)Which is true about the roles of lieutenant governor and vice president? =a)Both are always elected separately from the chief executive. b)Lieutenant governors have more power than the vice
asked by Ariel 
6th grade math
Why is the best the mean or median to use when planning a trip? Why? HELP PLEASE! I'M STUCK!
asked by Anonymous 
business
How can critical thinking be implemented into management?
asked by Mom40 
Math
3/4  4/7= 2/5  3/4= 5//6 + 7/10= 5/6 X 2/5=
asked by Tina 
capstone class, management
Scenario: You work as the manager of the second largest bank in your region of the United States. The bank's top management team has asked you to present an overview of how the current economy and financial changes have impacted your business and what
asked by Crystal 
geometry
Use the diagram below for the following question. P(2,1), Q(11,1), and R(8,7) M and N are the midpoints ofandrespectively. Find MN and PQ. How do these lengths compare with each other?. (its a triangle)
asked by anonymous 
math
an irrational number greater than one but less that two ?
asked by lisa 
arithmetic
what is the decimal of 7/20 how do u figure it out i need step by step break down
asked by sandra 
university of phoenix
Need some help with the american heart assoication trying to write a 1050 word paper by midnight phoenix time. Could you assist
asked by lokisha 
Physics  stage trick
A stage trick involves covering a table with a smooth cloth. When the cloth is suddenyl pulled horizontally, the dishes "magically" stay in position and drop on to the table. a)identify all the forces acting on the dishes during the trick b)explain ho
asked by Shaila 
physical science
if an engine must do 500 joules of work to pull a 10 kg load up to to a height of 4 meters ,what is the efficiency of the engine ?
asked by llulia 
Us history
what is predestination and how did it affect New England
asked by jessica 
chemistry
what is the symbol for extreme temperature in lab
asked by susan 
cultural diversity
what do statistics reveal about Asian diversity in America?
asked by john smith 
Statistics
If many random samples of 64 students who took the second midterm examination in Math 10 are taken, what is the 95th percentile of the average time to completion for these samples? Explain what this number means.
asked by Anonymous 
science biology
1. What is the name given to the type of organisms that can use Photosynthesis to produce glucose? In addition, provide three specific examples.
asked by maria 
chemistry
true or false: when water which is used to dissolve glucose is heated from 25 degrees to 80 degrees the solubility of the glucose is increased.
asked by tonya 
spanish
What does "Le Vive" mean in Spanish when translated into English.
asked by Dessie 
Algebra
A rectangular sheet of paper measures 2/3 FT by 1/5 FT. what is the area
asked by dale 
College Math
x^2+x+sqrtx^2+x2=0
asked by Anonymous 
geometry
If the diagonal of a square has a length of square root of 30, what is the square's area?
asked by Sarah 
accounting
hi,..!! i hope u can answer it,.. the following data are gathered prior to the preparation of the year end adjusting journal entries of IEMELIF enterprises: nature: last payment date: TAXES december 15, 207 ELECTRICITY december 22, 207 WATER december 10,
asked by jhona 
Chemistry
A solution is made by diluting 18.2 g glucose (C6H12O6) in 0.150 kg water. What is the mass percentage of solute in this solution?
asked by Jake 
Biopsychology
What are the four methods for studying the cerebral lateralization? I have three I just don't know what the fourth is. 1. The sodium amytal test 2. The dichotic listening test 3. Functional brain imaging 4. ?
asked by B 
math
Multiplying and Dividing Rational Expressions: 1. 2x^4/x^5 times 6x/x^3 times x/4= 3/x^2
asked by Jetta 
Math
3/w+1 + 2/3w= ? would the answer be 5/4w+1
asked by George 
geometry
How many planes are determined by "n" points, no four of which are coplaner?
asked by anonymous 
geometry
Use the diagram below for the following question. P(2,1), Q(11,1), and R(8,7) M and N are the midpoints ofandrespectively. Find the coordinates of M and N. (its a triangle)
asked by anonymous 
college
Have you ever used mnemonics (see p. 139 of your text) to remember something complicated? If so, describe the techniques you used. What ways might you use mnemonics to be a more effective college student and adult learner?
asked by Anonymous 
chemistry
what helps to hold funnel up during filtration
asked by susan 
cultural diversity
what do you believe is the future of Asian diversity in America?
asked by john smith 
development markets
Much of how you have been trained in you management and economic education has centered around the American market place. That means one is selling products to a market that has relatively high income by world standards. Another way of saying this is that
asked by mike Gee 
math
Max. He and his four friends are having ice cream. There are only three flavors available at the ice cream store they are visiting: chocolate, vanilla, and strawberry. One of Max’s friends, Stacey, eats chocolate exclusively How many different kinds of
asked by nana 
MATH
I'm having a hard time understanding Rational exponents Simplify if possible 1.(8)1/3 **note 1/3 is the exponent 2. 49 5/2 ***note 5/2 is the exponent
asked by TEE 
writing call
In what ways are fullsentence outlines more beneficial than topic outlines? o Explain why it may or may not be simpler to write your paper instead of first creating a fullsentence outline. o What steps will you take to turn your outline into the body of
asked by liz 
algebra
It is known that making 1 lb of honey requires 20000 trips by bees to flowers to gather nectar how many pounds of honey would 35000 trips produce?
asked by Anonymous 
medical coding 1
Could someone please check over my answers, and give me the correct answers if they are wrong. Thanks you very much for any and all help. 1. Which one of the following items must be included in a general multisystem examination of a constitutional system?
asked by Helen B. 
History
How did the U.S. economy change after WWII ended, compared to what it had been like during the war? Use specific examples of what people were able to have and do and what it must have felt like after the scarcity of their wartime experiences.
asked by S V.