Questions Asked on
April 26, 2010

Chemistry
How many grams of K2SO4 would you need to prepare 1500 g of 5.0% K2SO4 (m/m) solution?
asked by Jack 
AP Chemistry
Which is a stronger base in aqueous solution, IO or IO3? Explain.
asked by Lisa 
chemistry
a 10.0mL vinegar sample was completely neutralized by 22.5mL 0.2M NaOH solution. calculate molarity and % of acetic acid in vinegar. please help
asked by confused 
Organich Chemistry
What effect will the following factors have on a chromatographic separation 1) too strong an absorbent 2)collection of large elution fractions
asked by Johnny 
chemistry!
1.) AgCl(s) > Ag+(aw)+ Cl(aq) once equilibrium is reached, which statement is accurate? the concentration of Ag+(aq) is greater than the concentration of Cl(aq) The AgCl(s) mwill be completely consumed The rates of the forward and reverse reactions are
asked by julianne 
Chemistry
A 100 milliliter sample of 0.100molar NH4Cl solution was added to 80 milliliters of a 0.200molar solution of NH3. The value of Kb for ammonia is 1.79 x 10^5. (a) What is the value of pKb for ammonia? (b) What is the pH of the solution described in the
asked by Nicole 
chemistry
0.100 M of NaNO2 and 0.050 HNO2. what is the H3O of this solution? set up please.
asked by david. 
algebra honers (math)
what happened to the peanut who went late night walking?
asked by jasmine 
physics
When you go out to your car one cold winter morning you discover a 0.54 cm thick layer of ice on the windshield, which has an area of 1.6 m2. If the temperature of the ice is 4.1°C, and its density is 917 kg/m3, find the heat required to melt all the
asked by Ryan 
physics
Two particles, with identical positive charges and a separation of 2.60 x 10^2 m, are released from rest. Immediately after the release, particle 1 has an acceleration a1 whose magnitude is 4.60 x 10^3 m/s^2, while particle 2 has an acceleration a 2 whose
asked by kim 
geometry
the measures of the interior angles of a pentagon are 2x, 6x, 4x6, 2x16 and 6x+2. What is the measure of the largest angle
asked by Dee 
Physics
Tuning a Cello. A cellist tunes the Cstring of her instrument to a fundamental frequency of 65.4 Hz. The vibrating portion of the string is 0.625m long and has a mass of 15.0 G. Tension: 160 N What percent increase in tension is needed to increase the
asked by Michael Moskvich 
physiology
Which of the following statements is TRUE regarding bile? Bile is produced by the gall bladder, and secreted into the duodenum Bile is produced and secreted in response to CCK, which is in turn secreted primarily in response to high acidity of duodenal
asked by Anna 
Physics: merrygoround question
A playground merrygoround of radius 1.92 m has a moment of inertia 411 kg m2 and is rotating at 10.4 rev/min. A child with mass 38.3 kg jumps on the edge of the merrygoround. Assuming that the boy's initial speed is negligible, what is the new angular
asked by Tessa 
Physics
What is the strength of the magnetic field a distance of 1 meter from a wire carrying a current of 1 A? B=MoI  2(pi)r Mo=4(pi)x 10^7 I=1 A How do I know what r is?
asked by Jill 
math
The laundry bill is $33.80. If paid within 10 days,the company allows a 2.5% discount. Calculate the amount of the bill.
asked by debbie 
chemistry
A thimbleful of water at 100 deg C has a higher temp than a swimming pool full of water at 20 deg C, but the pool has more thermal energy than the thimble. Explain why this is possbile?
asked by lala 
physics help please!!!
A bungee jumper with mass 63.5 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 40.0 s. He finally comes to rest 28.5 m below the level of the bridge. Calculate the spring
asked by Anonymous 
physics
A violin string vibrates at 300 Hz when unfingered. At what frequency will it vibrate if it is fingered onethird of the way down from the end? (That is, only twothirds of the string vibrates as a standing wave.)
asked by Anonymous 
General chemistry
The firstorder reaction, SO2Cl2> SO2 + Cl2, has a rate constant equal to 2.20 x 10^5 s^1 at 593 K. What percentage of the initial amount SO2Cl2 will remain after 6.00 hours?
asked by hahaha 
College Physics
The rms speed of the molecules in 1.7 g of hydrogen gas is 1700 m/s. What is the total translational kinetic energy of the gas molecules? What is the thermal energy of the gas? 500 J of work are done to compress the gas while, in the same process, 1700 J
asked by Helly 
Chemistry
Consider the Lewis structure for the major resonance form of PCS–. (Note that carbon is the central atom.) The structure shows: a. A phosphoruscarbon triple bond and a carbonsulfur single bond. b. A phosphoruscarbon double bond and a carbonsulfur
asked by Mary 
chemistry
Write a net equation for the reaction between aqueous solutions of HClO4 and NaH2PO4.
asked by abc 
Chemistry
A 100 milliliter sample of 0.100molar NH4Cl solution was added to 80 milliliters of a 0.200molar solution of NH3. The value of Kb for ammonia is 1.79 x 10^5. (a) What is the value of pKb for ammonia? (b) What is the pH of the solution described in the
asked by Nicole 
Chemistry
What is the freezing point of an aqueous solution that boils at 102.1 C?
asked by Justin 
ice skater world problem
A skater spins with an angular speed of 12.4 rad/s with her arms outstretched. She lowers her arms, decreasing her moment of inertia by a factor of 8.00. Ignoring friction on the skates, what will be the skater's final angular speed?
asked by Tessa 
science
what is the balanced equation of the titration CH3COOH(aq) + NaOH(aq) → H2O(l) + NaCH3COO(aq)?
asked by mary 
Chemistry
i need to find the; [Cl] in PbCl2 solution,[Pb2+] in PbCl2 solution, and the ksp given: PbCl2(s)> Pb2+(aq)+2Cl(aq) Temp of solution =20.2 volume of Pbcl2 solution=25.00ml mass of dry AgCl2(g)=0.2543g #moles : AgCl(s)=1.77e3 Cl(aq)=1.77e3 Pb2+(aq)=
asked by Anthony 
Grammar (will you check these please)
Rewrite the sentence or phrase using comparative form of the adverb 1. Approach slowly. = Approach more slowly. 2. Get well. = Get better. 5. Come quickly. = Come more quickly. 6. favorably received = most favorably received 8. far away = farther away 9.
asked by Tiffany 
Chemistry
What would happen to the color of a dilute solution containing FeCL4 if you added concentrated HCl?
asked by Christina 
Chemistry
if an aqueous solution of BA(NO3)2 is added to 1.0 L of a solution containing 0.05 mol F and 0.075 mol SO4 2, which salt will precipitate first?
asked by Matt 
Chemistry
What is the concentration, in percent (v/v) of a solution containing 50mL of diethyl ether (C4 H10 O) in a 2.5L of solution?
asked by Kim 
trig
Two airplanes leave a airport at the same time , one going northwest ( bearing 315degrees) at 422 mph and the other going east at 341 mph. How far are the planes after 4 hours ? Please help have no idea of how to solve?
asked by stacey graham 
Geography
48. What role has the concept of nationalism played in the life of Russia in the past and present. I'm so confused on this question :/
asked by y912f 
childhood
Please, I need to know the music for two children's songs, from other cultures(not en the United States) List the song title, the name(s)who wrote the words and the music, the publisher's name and the city, and the copyrigth date. Thank you so much
asked by Natividad 
physics
A horizontal board weighing 227.0 N is supported at points A and B in the figure below. The plank serves as a platform for a painter, who weighs 553.0 N. Find the maximum distance D, such that the plank will not tip, no matter where the painter stands.
asked by Michael 
spanish
Choose the correct singular form of “las universidades.” Choose the correct singular form of “los señores.” Choose the correct singular form of “ las mochillas.”
asked by Brittany 
Trigonometry
1. Find the exact value of the following (Think identity) Cos(2 Arccos(5/13)) 2. Solve the following equation for 0° ≤ Θ < 360° Sec(Θ)= tan(Θ) + cos(Θ)
asked by Chris 
CHEMISTRYYY
consider the following reaction: Mg(s)+ 2HCl(aq) > MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP?
asked by Justin 
Chemistry  Please Help!!
Find the pH of a mixture of .150 M HF(aq) solution and 0.100 M HClO2(aq) HF + H2O F + H3O+ Ka= 3.5*10^4 So I will show my attempt below... [HF] [F] [H3O+] I .150 0 0 C x +x +x E .15x x x Ka= [F][H3O+]/[HF] 3.5*10^4= x^2/(.150x) assume x is small so
asked by Erin 
chemistry
[Cl] in PbCl2 solution, M? [Pb2+] in PbCl2 solution, M? ksp? #moles : AgCl(s)= Cl(aq) Pb2+(aq)= Temp of solution =20.2 volume of Pbcl2 solution=25.00ml mass of dry AgCl2(g)=0.2543g
asked by Anthony 
math
Paper towels are sold at the rate of $6.50 per doxen rolls. Figure the cost of 10 dozen rolls of towels with a 3.5% discount and a 6% sales tax.
asked by FROGG 
Trig
Solve for X: 5sinx+2cos2x3=0
asked by = 
geometry
how do you find the hight of a cylinder if you already have the volume and the radius
asked by Brittani 
College chemistry
5.00 g of octane are burned in a bomb calorimeter containing 2.00 * 10^2 g of water. how many Calories of energy are released if the water temperature increases 6.00 degrees C?
asked by laney 
trig
A freighter leaves on a course of 120 degrees and travels 515 miles. The ship then turns and goes due east 200 miles. What is the bearing and distance from the port to the ship? I calculated 142 miles for distance but couldn't get bearing. Any help is
asked by stacey graham 
Geometry
Describe the effect of each change on the perimeter and the area of the given figure. A.The Base and height of the triangle are both doubled B. The radius of the circle with center (0,0) that passes through (5,0) is multiplied by 3/5
asked by Anonymous 
calc
f(x)=8cos4x What is the derivative? Im doing online homework and i keep getting an incorrect answer. How do you work out this problem correctly? thanks
asked by Adam 
physics
A pendulum has a period of 0.57 s on Earth. What is its period on Mars, where the acceleration of gravity is about 0.37 that on Earth?
asked by Anonymous 
algebra
Q 2: If the ticket agency charges ‘p’ dollars per ticket for a concert, it can sell maximum of (40000 – p) tickets. Find: a. A polynomial to represent the total revenue with a ticket price as p dollars. b. How many tickets will be sold for a price of
asked by Anonymous 
College Algebra
OOPS I got the zeros wrong in the last post...please show work. Find a polynomial of the specified degree that has the given zeros Degree 4: zeros 2,0,2,4
asked by Ashley 
chemistry
Write a net equation for the reaction between aqueous solutions of NaHSO4 and NaCN.
asked by adam 
physics
A sound wave in air has a frequency of 262 Hz and travels with a speed of 349 m/s. How far apart are the wave crests (compressions)
asked by Anonymous 
physics
two small objects, A and B, are fixed in place and separated by 3.00 cm in a vacuum. object A has a charge of +2.00 micro coulomb , and object B has a charge of 2.00 micro coulomb. how many electrons must be removed from A and put onto B to make the
asked by kim 
Geography
47. Following the breakup of the Soviet Union, what are some of the major problems faced by many of the new countries. Can someone please give me a specific page where I can find information for this question? In my book it's spread around the whole
asked by y912f 
trig
Solve the triangle ABC if angle A = 76 degrees and a = 12, b = 4
asked by John 
Ancient Greece
I need help to write a thesis on Ancient Greece Architecture
asked by Tiana Orta 
chemistry
Write a net equation for the reaction between aqueous solutions of NaC2H3O2 and H3PO4.
asked by dude 
business
INTRODUCTION TO BUSINESS PROJECT 1. Describe a business “case” – from mass media, Internet, or real life identify a business that does or doesn’t protect the environment. Indicate the source of your research. (two pages) 2. Presuming you have your
asked by caci 
alcoholic beverages
wine bottles are stored tilted downward so that
asked by Donna Beech 
physiology
Which of the following statements pertaining to protein digestion and absorption is FALSE? The majority of amino acids and peptides are absorbed in the upper portion of the small intestine. Protein can enter the GI tract via ingestion or via secretion as
asked by Anna 
civics
I couldn't not find the answer to this in my book. The county form of local government is found in a. about half the states, b. all but two states, c.only 2 states, d. fewer then half of the states. I am guessing that since my book says " over the past
asked by Tiffany 
math
289 min = 4 hr and 49 min 213 min = 3 hr and 33 min 345 min = 5 hr and 45 min 197 min = 3 hr and 17 min I have to change these minutes on the left to hours and minutes. could you check if I have them correctly. Thank you for your help
asked by st 
math
Let AB be a diameter of a circular track. Tom starts from point A running clockwise on the track. At the same time Jerry starts from Point B running counterclockwise on the track. Each person runs at a constant speed. They first meet after Tom has run 200
asked by al 
chemistry
consider the following reaction: Mg(s)+ 2HCl(aq) > MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP?
asked by Zoe 
English
What would be a good thesis statement on steroids ?
asked by Raina 
Chemistry!
a)consider the following reaction: Mg(s)+ 2HCl(aq) > MgCl2 (aq)+H2 (g) What minimum amount of 1.75 M HCl is necessary to produce 27.5 L of H2 at STP? b) What is the freezing point of an aqueous solution that boils at 102.1 C?
asked by Justin 
Calculus
Question Details: Do the following. (Round your answers to four decimal places.) (a) Estimate the area under the graph of f(x) = 8 + 2x2 from x = 1 to x = 2 using three rectangles and right endpoints. R3 = 1 Improve your estimate by using six rectangles.
asked by Cindy 
Chemistry
A buffer solution is made as followed: i)adding 13.50mL of 0.200mol/L sodium hydroxide to 50.00mL of 0.100mol/L propanoic acid. ii)diluting the resulted buffer into a total volume of 100.00mL Using IREC tables (if possible) calculate: a)The pH of the
asked by Sara 
math
the number feared by phythagoreans since it ties halfway between the only two integers that can be both the perimeter and the area fo the same triangle
asked by mireya 
Economics
Cell phones have become very popular. At the same time, new technology has made them less expensive to produce. Assuming that the technological advance caused cost curves to shift downward at the same time that demand was shifting to the right, draw a
asked by Kysha 
Chemistry
This is a homeowrk question Dr. Jekyll and Mr. Hyde is a story of one man with different personalities. Water is the same when looking at its acidic and basic properties. Why can we say that and what parallels of the Stevenson book can be drawn between
asked by Taylor 
math
Look at the pattern of shaded numbers. use place value to describe how the number change. 501,502,503,504,505,506,507,508,509 is shaded,510,511,512,513,514,515,516,517 is shaded, 518,519,520,521,523,524,525 is shaded,526,527,528,529,530,531,532,533 is
asked by dylan 
physics
In the figure below, a box of Cheerios (mass mC = 0.8 kg) and a box of Wheaties (mass mW = 2.5 kg) are accelerated across a horizontal surface by a horizontal force applied to the Cheerios box. The magnitude of the frictional force on the Cheerios box is
asked by bob 
Accounting
When the owner of a company invests his personal funds into the business, would it be entered as a credit to his drawings in the Ledger or would it be entered in a new column under the company's revenue?
asked by Matt 
English
Write a fully developed paragraph on your favorite season. Out of all the seasons, Spring is by far my favorite. when Spring comes, winter goes and along with it the bitter cold. I do not like the cold. Spring brings clear blue skys and the warm yellow sun
asked by John 
physics
A 29 g ice cube at 0.0°C is added to 110 g of water in a 62 g iron cup. The cup and the water have an initial temperature of 25°C. (a) Find the equilibrium temperature of the cup and its contents. i don't understand how the iron cup changes the
asked by steven 
Chemistry
MnO2(s) > MnO(s) + 1/2O2(g) Delta H1 = +32.5 kcal MnO2(s) + Mn(s) > 2MnO(s) Delta H2 = 59.0 kcal Calculate Delta H final of MnO2 in KJ. The answer is not as important to me as the explanation. So, can someone please show me how to do this type of a
asked by Lisa 
chemistry
Write a net equation for the reaction between aqueous solutions of NaNO2 and NaH2PO4.
asked by larry 
Math
Using factoring by grouping, how would you factor these out. 4t^2+3t4t3 3t^21t3t+1
asked by Lindsey 
economics
Suppose you were offered $2,000 to be delivered in 1 year. Further suppose you had the alternative of putting money into a safe certificate of deposit paying annual interest at 10 percent. Would you pay $1,900 in exchange for $2,000 after 1 year? What is
asked by Kysha 
Physics
A solid bar of length L = 1.30 m has a mass m1 = 0.893 kg. The bar is fastened by a pivot at one end to a wall which is at an angle è = 33.0 ° with respect to the horizontal. The bar is held horizontal by a vertical cord that is fastened to the bar at a
asked by Tessa 
marketing
13) Which of the following would probably NOT be in a proposed marketing plan? A. A list of what company resources (costs) would be required. B. Expected sales and profit results. C. A description of the target market and marketing mix. D. A statement of
asked by Anonymous 
US/101
How do your surroundings affect your reading comprehension?
asked by Henry 
To Writeacher
Mr. Henry Axhelm Math Period 2, Room 107 I teach five classes a day, Not students, just classes. No sense getting involved With their personal problems. Nothing in their heads worth listening to, anyway. They came here to socialise, To see who's "cute." So
asked by Sara 
chemistry
Is this statement accurate? the boiling point of the distilled water was 99°C. After five minutes, the temperature still stayed the same; it remained constant. The liquid was becoming a gas. Phase change means there is an energy change. When the
asked by Jennie 
word order
Which is the correct ordering of adjectives and adverbs in the English language? adverbadjectivenoun adjectiveadverbnoun adverbnounadjective nounadjectiveadverb
asked by christopher 
word order
Which is the most logical order for adjectives? size, shape, color color, size, material material, nationality, size age, shape, size my answer A
asked by christopher 
chemistry
what volume of .5 m sulfuric acid is needed to react completely with 10 mL of 2m potassium hydroxide
asked by Sadie 
college
cos 23pi/12
asked by roger 
College Algebra
Find a polynomial of the specified degree that has the given zeros: Degree 4: zeros 1,1,3,5 (I know you would do... (x(1)) (x1) (x3) (x5) but I don't know what to do after that. I know when it's a degree of 3 you just use FOIL and leave the (x5) as
asked by Ashley 
maths
what are power functions used for? including strengths and limitations for use and EXPLAIN please :)
asked by sarah 
Physcial Science
The silvered wall of a vacuum bottle takes care of heat flow by what?
asked by Sue 
Physics
Draw a fully labelled graph of stopping distance on the indpending y,axis vs speed on the independent x,axis.plot the points and sketch your graph use the graph paper.speed 32km,48km,64km,80,km,96km,112km,stopping distance 12m,23m,36m,53m,74m,96m
asked by Aphiwe 
COM/220
Please post your response to the following: o Identify the thesis statement in the movie “The Origins of AIDS.” o What strategies do the filmmakers use to formulate their argument? o What makes the arguments viable and compelling? 1. Review the
asked by Liz 
physiology
Which of the following is FALSE regarding carbohydrate digestion and absorption? Carbohydrates are broken into monosachrides prior to absorption The removal of sodium and monosachrides from the intestinal lumen favors water secretion Monosachrides are
asked by Anna 
physics
A capacitor that powers the flash in a camera is charged using 6.0 V battery. after that capacitor is charged, it is discharged through the flashbulb in just 1.0 microsec. with avg power output of 20 w. whats is the capacitance?
asked by Neon 
physiology
Which of the following statements regarding pepsin is FALSE? Pepsin is derived from the inactive enzyme pepsinogen Pepsin primarily works to digest fatty acids Pepsinogen secretion is stimulated by increased protein concentration, gastric distension, and
asked by Anna 
chemistry
Calculate the number of mL you would use to prepare 5.0 L of 0.20 M NaOH from a 5.23 M stock solution.
asked by laney 
physiology
Which of the following is TRUE regarding the small intestine? The small intestine secretes roughly the same volume of fluid as it absorbs Segmentation is responsible for mixing the chyme and bringing it in contact with the intestinal wall for absorption
asked by Anna 
Wits Univesrity
If the numerator and denominator of a fraction are each increased by 3, the fraction is equivalent to twothirds. If the numerator and denominator are each increased by 11, the fraction is equivalent to fourfifths. What is the fraction?
asked by TL Matabane 
Physics
The combination of an applied force and a frictional force produces a constant total torque of 38.1 Nm on a wheel rotating about a fixed axis. The applied force acts for 7.00 s, during which time, the angular speed of the wheel increases from 2.40 rad/s to
asked by Tessa 
Finance
8. Ms. Scott purchased a 7year, 4% annual coupon bond with the YTM of 4%. Ms. Lee invested in a 10year, 6% annual coupon bond with the YTM of 4%. If interest rates go up by 2 percentage points due to inflation (that is, the YTM becomes 6%), who will have
asked by Courtney 
math
How would you simplify this rational expression: Can you please show me the steps on how you get the answer thank you. 2y+1 over y2 times (42y)
asked by Stacey 
math #2
Look at the pattern of shaded numbers. use place value to describe how the number change. 501 is shaded,502,503,504,505,506,507,508,509,510,511,512,513 is shaded,514,515,516,517,518,519,520,521,522,523,524,525 is
asked by dylan 
civics
I cannot find the answer to this question. In which local areas is the problem of balancing funding and services uasually most severe? a. rural areas, b. suburban areas, c. cities, d counties. I am guess the answer is D because the book states "local
asked by Tiffany 
math
Use the data in the following table to compare the number of people living in the United States from 1810 through 1900 and the number living in the United States from 1910 through 2000. Use any form of graphical representation to make the comparison and
asked by crystal 
physics
What is the strength of the magnetic field a distance of 1 meter from a wire carrying a current of 1 A? equation: B=MoI  2(pi)r Mo=4(pi)x 10^7 I=1 A How do I know what r is?
asked by Jill 
math
Using factoring by grouping, how would you factor these out. 4t^2+3t4t3 3t^21t3t+1 Thank you
asked by Lindsey 
Human Services
What have been the most significant changes in human services over the past 50 years? How has society’s responsibility to individual needs changed in the last 10 years? What do you think the role of human service workers will be in the future?
asked by Anesha 
Physics again sorry
A solenoid of 200 loops of wire that cover a length of 0.1 m. The solenoid carries a current of 4.0 A. What is the strength of the magnetic field inside the solenoid? In this instance do I assume that this time r is 200 x 0.1? Or is it still just 0.1 and I
asked by Jill 
Document and Visual Design
Question 30 Which traditional visual aids combine the advantages of posters and dryerase boards? Transparencies Posters Dryerase boards Handouts 32.Which traditional visual aids must be correctly placed upright before you use them? Transparencies
asked by christopher 
chemistry
In diatomic molecules of elements, the electronegativites of the two atoms are _________, so the electrons are shared ___________.
asked by claire 
collegephysics
In a particular region of space, the magnetic and electric fields have energy densities of 0.2 J/m3 and 4 J/m3 , respectively. Calculate the strength of the magnetic and electric fields in this region.
asked by Joe 
algebra
Algebra Equation 3x12=48
asked by aly 
statistics
A company manufactures caclculators in batchers of 64 and there is a 5% rate of defects. Find the probability of getting exactly three defects in a batch
asked by autumn 
science
jason wants to know the mass of air in his soccer ball. to find the mass he should ? He should add the mass or subtract the mass of an inflated ball or empty ball ?
asked by Ashley 
Math
Factor completely 3x^527x^4+21x^3
asked by Lucky 4 
Chemistry
Cathodic Protection. i need to write a paper on corrosion resistance techniques and CP is one of the more popular methods. Can someone please explain how it works in layman's terms for me?
asked by Ryan! 
Chemistry 143
Write three thermochemical equation needed to calculate delta H for the following reaction: 2Mg(s) + O2(g) = 2MgO Include delta h values in kJ for each reaction. Please help!! I don't even know were to start!!
asked by Shana 
Chemisty 11
Why is it important to use the correct saltsand mix on highways during storms? Help please this is for my Chemisty Project
asked by Andy 
word order
Where should adjectives be placed?
asked by christopher 
math
Part 2: Now it’s time to make the guest list! Figure out how many guests you will have at your party, and how much it will cost to feed everybody. You have four grandparents coming. For the adults, you have your parents, your best friend’s parents,
asked by luigi 
math
Use the data in the following table to compare the number of people living in the United States from 1810 through 1900 and the number living in the United States from 1910 through 2000. Use any form of graphical representation to make the comparison and
asked by crystal 
physics 11
explain how it is that you could possibly generate more power then a horse? i don't understand, i know it has to do somethig with potenial energy and kinetic. anyone wanna explain plz?
asked by Kris 
5th grade
a group of goats and ducks have a total of 99 heads and legs amoung them there are twice as many ducks as there are goats.how many are there of each?
asked by jhgd 
Math
A drawing 20 centimeters by 15 centimeters is put into a copy machine at a setting to be shrunk by 75% of its original size. a. What will the new dimensions be? b. Are the ratios of corresponding sides of the drawing and its copy equal? c. Are the drawing
asked by Tarah 
science
The ashes left after the woods burns have less mass than the wood had . which statement explains what happened to the rest of the wood's mass. a. it was lost as heat b. it is in gases in the air c. it is still in the wood d it is in the ashes, but its
asked by Ashley 
Statistics
1. For the following exercise, complete the following by using the data sets below that provides the ages of the first seven presidents: a. Find the mean, median, and range for each of the two data sets. b. Find the standard deviation using the rule of
asked by Mercede 
physics
At what distance from a carbon nucleus is the electric potential 3.8 V? Carbon atoms have 6 electrons in the atomic shell.
asked by saw 
accounting
what effect would the change in predetermined overhead rate have on the company's inventory values?
asked by Anonymous 
precalculus
Solve this Function: (3x7)^2 (x^29x+18)  x (x^212x+40) (x^16)
asked by Treema 
math
x/9 = 1/16, solve for x
asked by Jacqui 
science
Describe the bonds that "unzip" during the replication of dna.
asked by ben 
coding
Why would a coder want to take special precaution when coding the diagnosis of human immunodeficiency virus or acquired immunodeficiency syndrome?
asked by jill velasco 
fine art
Ok, if someone saw a fine art painting and they said great picture VS someone looking at a fine art painting and said great painting, what qualifys one a painting and one a picture
asked by tom again 
calculus
How do you differentiate the maclaurin series for 1/(1x) twice to find the maclaurin series of 1/(1x)^3.
asked by Paul 
math
a squared +b squared=c squared a=90 c=150 What is b?
asked by Sequoyah 
9th grade
i would like help understanding graphing quadratic functions? the steps for y=x22x2
asked by bailey 
engineering
A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 100Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places using
asked by Peter 
algebra
1. On three consecutive passes, a football team gains 5 yards, loss 18, and gain 50 yards. What number represents the total net yardage? The total net yardage is 2. 4
asked by Jimmy 
Math
Evaluate the triple integral _E (xy)dV where E is a solid tetrahedron with vertices (0,0,0), (4,0,0), (0,1,0), (0,0,4) I just can't seem to find the limits, of x,y and z
asked by Salman 
statistics
The response of a sample of 1620 people who were asked if the air quality in their community is better or worse than it was 10 years ago are shown below. Find the mean, median, and mode of the data. Better: 323, Worse: 333, Same: 420 Question: Find the
asked by looking for someone to varify my work please 
Chemistry
Hi Can someone please help me undersand how to get the answer to this question A 15.0 mL solution of 0.050 mol/L AgNO3 was titrated with 0.0250 mol/L NaBr in the cell SCE  titrated solution  Ag(s) Find the cell voltage for 10.0 mL of titrant added. (a)
asked by James 
engineering
A compressed high resolution chest xray image requires about 8MB of data. most GP surgeries are connected to the NHS network at a speed of 100Mbps. how long would it take to download a set of 6 images. give your answer to second to 2 decimal places using
asked by Peter 
ACCOUNTING
if a company issued $32,000,000 of 10year, 12% bonds at an effective interest rate of 13%, receiving cash of $30,237,139 and interest on the bonds is paid semiannually how do you calculate the first semiannual interest payment and the amortization of the
asked by BOB 
Economics
) Numerous times in history, the courts have issued consent decrees requiring large companies to break up into smaller competing companies for violating the antitrust laws. The two best known examples are American Telephone and Telegraph (AT&T) in the
asked by Kysha 
math
Look at the pattern of shaded numbers. use place value to describe how the number change.
asked by dylan 
Physical Science
The vacuum in the doubledwalled vacuum bottle takes care of heat flow by what?
asked by Sue 
Probability math ?
If I am rolling a single dice what is the probability of rolling a number that is divisible by 2 and 3? The only number divisible by 2 and 3 is 6. So, would the answer be 1 out 6 or 1/6
asked by Bart 
Science
I'm trying to determine what fossil fuel contributes the most to acid rain. I said coal because it is thought to be the "dirtiest" fuel with the greatest carbon footprint. Do you think this is correct?
asked by Rachel 
ACCOUNTING
Gain on redemption of bonds 1,150 Income tax: Applicable to continuing operations Applicable to loss from discontinued operations Applicable to gain from redemption of bonds 247,509 100,000 150 Interest expense 778,266 Interest revenue 2,025 Loss from
asked by Anonymous 
physiology
Gastrin is a hormone secreted into the __________ by the ___________. Blood; stomach Lumen; stomach Lumen; pancreas Blood; small intestine
asked by Anna 
Intro to Logic
What type of fallacy is the following statement? Whether we are to live in a future state, as it is the most important question which can possibly be asked, so it is the most intelligible one which can be expressed in language.
asked by Charlene 
english
how does anna feel about what is happening to her family from the play Thunder on Sycamore Street
asked by rachel 
Chemistry
g+ 2HCl>MgCl2+H2 The mass of the HCl is 24.852 g mass of the Mg is .990 g and the mass of the calorimeter is 3.711 g. the change in temperature of the solution was +19 degrees celcius. itd be great if i could just get a basic equation to use or something
asked by Kevin 
To WriteacherThanks
I'd like to thank you for helping me with my poem writeacher, thank you very, very much. :)
asked by Sara 
College chemistry
How do you calculate the number of mL you would use to prepare 5.0 L of 0.20 M NaOH from a 5.23 M stock solution.
asked by laney 
english 4
1. What features make The Awakening a "local color" story?
asked by itty 
Chemistry
I have a diagram that I have to identify for homework. The structure shows an "R" connected with single bond to carbon(in the middle)which in turn is connected to OH with single bond.The carbon in the middle has a double bond with Oxygen on the top. The
asked by Ian 
Math
4x(x6)5x(x5)=2 Solve for X
asked by Hailey 
Asymptotes
f(x) = (3x7)^2 (x^29x+18) / (divided by) x(x^212x+40)(x^216) all asymptotes and intercepts are asked for
asked by Treema 
legal studies
need help finding cyberbullying case. please help
asked by tegs :) 
Math
what must be added to 8/3 to make 2 5/6
asked by Jess 
Trigonometry
Two points, A and D, are in a horizontal line with the foot of a tower, CB, and on opposite sides. The distance between A and D is 535.4 feet while the angles of elevation of the top B are 12 degrees 46 minutes from A and 18 degrees 38 minutes from D. Let
asked by Alivia 
algebra honors (MATH)
what happened
asked by jasmine 
Chemistry
A cup of chicken soup (500.0 g) is heated from 20ºC to 98ºC in a microwave oven that operates at wavelength = 1.55 x 10–2 m. How many moles of photons are absorbed by the soup? Assume that the specific heat capacity of chicken soup is equal to that of
asked by Mary 
PreCalculus
Hi i don't know how to do this problem solve for n^3 given that log(40 SQRT(3))/log(4n) = log(45)/log(3n) Thanks i'm copletely lost and don't know how to solve
asked by Kate 
Chemistry
Why does losing two electrons to form a +2 Cation cause the greatest shrinkage in atomic radius of the following? People are telling me that's the answer but I don't understand. a. Gaining one electron to form a 1+ cation b. Losing two electrons to form a
asked by Mary 
Chemistry
does the mole ratio in this question affect the answer? a 2:1 mixture of O3 and O2 is allowed to effuse through a pinhole in a balloon.after a few seconds, the content of the balloon is analyzed. what will be the mole ratio of the gases in the balloon?
asked by Tokey 
HMS
What have been the most significant changes in HMS?
asked by Pam 
trig
finding the equivalent polar equation 2x+3y=6 I got r=6/2cos(theta)3sin(theta) can anyone check plz
asked by stacey graham 
Physics
For voltage variation with length, in using a slide meter, the wire resistance varies linearly with length as Rx = resistivity/Area. Since the voltage and resistance are related with ohm's law, Vx= iRx, the current is the same alog all pts. along the slide
asked by Matt 
life and carrers
can any 1 give me tips on life and carrers im doing ok but i want at least a 90% this period but i have an 80,83 and a 76 please help me.
asked by bills luver 
6th grade math
2  t = 9 5
asked by David 
English
At the Lunch Counter A girl, fifteen perhaps, licking her fingertips, smoothing splotches of butter and salt off her blue pants, cheek muscles rippling. Nathan who is blind sidles to the stool beside her. They talk, he pompously, she making faces he can't
asked by Sara 
statistics
A company manufactures caclculators in batchers of 64 and there is a 5% rate of defects. Find the probability of getting exactly three defects in a batch
asked by autumn 
probability and statistics
The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the
asked by Rhanda 
probability and statistics
The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the
asked by Rhanda 
physics
A 5 m by 9 m raft whose mass is 18000 kg floats in fresh water. A 8590 kg load is dropped on the raft. The acceleration of gravity is 9.8 m/s2. With what frequency does the raft bob up and down? Answer in units of Hz.
asked by eric 
vector calculus
find an equation for the plane that contains the line x = 2t8, y=3t +3, z= 5 t, and the point (5,4,0)
asked by Omar 
10th grade
The addition of which nitrate salt will cause a decrease in the concentration of I(aq)? Pb(NO3)2 Ca(No3)2 LiNo3 KNo3
asked by juliannme 
medical billing and coding
What is the importance of a fee schedule and the factor's it's based on?
asked by jill velasco 
Trigonometry
What is the exact value of the cos of 23pi/12? (Twentythree pi over 12, which is = to 345 degrees.) Thank you, Roger
asked by Please help. 
chemistry
Write a net equation for the reaction between aqueous solutions of NH4Cl and Na2SO3.
asked by bill 
PreCalculus
question skipped again please post response in this one so that way I don't have to search for old posts h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 2 2 4 7 5 4 8
asked by Kate 
English
Thank you very much for your last corrections. Here are some more sentences on Virginia Woolf's biography. I really hope you can check them. 1) Virginia’s childhood was deeply affected by the death of her mother and the presence of an aggressive and
asked by Franco 
English
Unscramble these words: lytnme awhei diarn
asked by Anita 
algebra
20 years from now a person will be 3 times as old as he is now how old is he now
asked by Anonymous 
physiology
Long reflexes regulating GI function differ from short reflexes in which of the following ways? Short reflexes involve the local GI nerve plexus The effectors of short reflexes are GI tract smooth muscle and glands Long reflexes involve autonomic efferent
asked by Anna 
chemistry
A 10% acid solution is to be mixed with a 50% acid solution in order to get 120 ounces of 20% acid solution. How many ounces of the 10% solution and 50% solution should be mixed?
asked by Meliss 
physiology
Is the following statement True or False, and Why? The presence of a hyperosmotic solution in the duodenum will stimulate gastric emptying. True; this helps to speed up the absorption process True; the hyperosmotic solution draws contents in from the
asked by Anna 
Apchemistry
Thank you for your help Why is solid copper (I) nitrate a poor conductor? I know that CuNO3 is an ionic solid, so maybe (please check me on this) the electrons in CuNO3 are exchanged in the formation of electrostatic attractions found within ionic solids,
asked by Kiki 
Chemistry
How do the qualities of acids and bases shape the natural world we live in? I really apppreciate, in advance, any help you can give meI'm homeschooled and just trying to understand this better. Thank you
asked by Sara 
Emglish
Thank you very much for your last corrections. Can you pleasecheck these sentences , too? 1) She thinks of the books which have been given to her and inscribed by the poets themselves. 2) Though the furniture of their winter house (or secondholiday home?)
asked by Franco 
math
Dr. needs 500 needles priced at $2.60 per hundred. If she pays within 10 days she receives a 2% discount and sales tax is 5.5%. What amount would you pay with the discount? I did this. $12.60*5= $13.00 $13.00*2%=0.26 $13.00.26=$12.74 $12.74*5.5%=0.7007
asked by debbie 
Chemistry
Hello, I'm wondering what the difference is in method when it comes to finding the pH of a weak acid versus finding the pH of a strong acid? Thanks!
asked by Rob 
maths
area of a parallelogram of 30 an d 48 cm
asked by dali 
Math
Could someone please explain this problem to me. I need to factor and check by multiplying. 7x^9y^7+35x^7y^6+35xy= Here is what I got but I don't think that it is right. 7x^9y^7+35x^7y^6+35xy= 7xy(x^8y^6+5x^6y^5+5) Is this correct? Thanks.
asked by B.B. 
Math
7x+5y=175 x+y=23
asked by Adrianne 
gen105
dq question2
asked by cleopatra 
reading
what does wheither wilt thou wander, wayfare mean?
asked by bills luver 
geometry
what is the lateral area of a right cylinder with a radius of 4in and height of 9in?
asked by tierra 
Physics
What is the proof for voltage versus length in the equation V=Cx?
asked by Matt 
human growth and developmnet
What is PHONEME RECOGNITIONRECOGNIZING LANGUAGE SOUNDS ?THANKS:)))
asked by vedrana 
Math
Can I reduce these fractions before I multiply them together? because when i multiply them I get some huge numbers. thank you 11/52 times 39/80 21/25 times 15/28 32/121 times 33/144 16/105 times 155/93
asked by Justine 
math
The hypotenuse of a 30 60 90 triangle has length 17. What is the length of the side opposite the 60 angle?
asked by mikemike 
APCHemistry
Hi these are the posts from earlieri just had a quetsion about your response: ""Apchemistry  DrBob222, Monday, April 26, 2010 at 7:10pm Your thinking is ok. All ionic solids, although composed of ions, are locked into place by the crystal lattice
asked by Kiki 
Loneliness and Aloneness
What is the difference between being alone and feeling lonely?
asked by Anonymous 
business
Return on assets represents the total return on the net investment in the firm. True or False?
asked by Kesha 
Business
The higher the inventory turnover ratio, the more inefficient the firm is in managing its inventory. True or False?
asked by Kesha 
Math
each face of a cube can be painted either yellow or red. how many different ways can you paint the cube?
asked by Carol 
math
ms. sue how did you come up with your answer? I did this. 33.80 and 2.5% 33.80 times .025 = 0.845. I don't understand what the total amt of bill is?
asked by debbie 
math
if the life insurance is 64000 dollars.. how many 21.82 dollar payments a month could you make to pay it off?
asked by Anonymous 
accounting
debit and credit journal entries Sold merchandise with retail value of $6,000 and a cost of $4,080 to Chang Corp., invoice dated Jan. 13.
asked by laura 
Math
Barter question: name will give for a 1 marble 2 paper clips m 2 marker 1 pencil r 5 notepads 4 markers l 1 pencil 5 paper clips g 3 erasers 5 notepads Question how does a get erasers?
asked by Simon 
ms. sue
Thank You
asked by debbie 
Document and visual design
Which traditional visual aids usually require you to dim the lights in the room? Handouts Dryerase boards Transparencies Slides my answer slides
asked by christopher 
Document and visual design
When are visuals appropriate for a document?
asked by christopher 
Document and visual design
Question 33 5 points Save Which traditional visual aids must be placed in proper order before you use them? Transparencies Handouts Slides Dryerase boards MY ANSWER slides
asked by christopher 
Document and visual design
Why is it important to have a clearly designed document? What does a poorly designed document do to your reader?
asked by christopher 
English
Thank you very uch for your corrections. Can you possibly hae a look at the following sentences on V.Woolf's Mrs Dalloway? 1) The “action” of Mrs. Dalloway is limited to the events of a single ordinary day (or to the events taken place on a single
asked by Franco 
college
The annual Salary of an electrical engineer is given in terms of the years of experience by the table below. Find the equation of linear regression for the above data and obtain the expected salary for an engineer with 48 years of experience. Round to the
asked by Rhanda 
English
I forgot to include the following statements. I really hope you can correct them, too. 1) They both have a weak personality and depend upon their partners for stability and protection. 2) Though Clarissa attempts to gain freedom and independence, she is
asked by Franco 
English Launguage Arts 6th feet
In this sentence what is the prepositional phrase: Kelly asked about you Thanks, M.P.L
asked by M.P.L 
social
how not to get stressed on ss hmwk
asked by mr.skittles luver 
Precalculus
please still stuck h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 2 3 2 6 8 8 0
asked by Kate 
math
wat is the diameter in terms of pi when the radius is 56?
asked by bills luver 
Algebra 2
How do I expand these powers? (a  b/2)^4 (2 m/2)^5
asked by Ana 
College Alg.
Multiply. (4n)^2 (2n^2)^3= ^=to the power of
asked by Lucky 4 
word order
Where should adverbs be placed?
asked by christopher 
math
a room has a floor area of 1,025 ft^2 and a 10 ft high ceiling. the housing code requires at least 200 ft^3 per person. what is the maxium number of ppl allowed in the room?
asked by nicole 
word order
What do adverbs describe when they are placed before the noun? the gerund the verb the noun the adjective MY ANSWER the adjective
asked by christopher 
Math
Hi. If you don't have a circumference in the question, how do you find the radius!?
asked by Cara 
college physics
The energy difference between states A and B is twice the energy difference between states B and C (C > B > A). In a transition (quantum jump) from C to B, an electron emits a photon of wavelength 300 nm. What is the wavelength emitted when the photon
asked by Kelly 
college physics
A typical wavelength of infrared radiation emitted by your body is 25 µm (2.5 multiplied by 105 m). What is the energy per photon of such radiation?
asked by Josh 
American Government
Whenever Congress has a perceived need for ongoing control of an economic activity, what does it tend to create?
asked by Anonymous 
math
Determine the validity of the next arguments by using Euler circles, then translate the statements into logical statements using basic connectives, and using truth tables, determine the validity of the arguments. Compare your answers. (a)No A is B (b) All
asked by Deb 
fine art
what is the diference between a fine art painting and a picture
asked by tom 
Math
Truth tables are related to Euler circles. Arguments in the form of Euler circles can be translated into statements using the basic connectives and the negation as follows: Let p be gthe object belongs to set Ah. Let q be gthe object belongs to set
asked by Deb 
math, trig
What is the exact value of the cos of 23pi/12? (Twentythree pi over 12, which is = to 345 degrees.) Thank you
asked by roger 
health
list the movable joint in the correct column. ballandsocket= Shoulder, Hip Gliding= backbone, neck, forearm Hinge= knee, elbow,toe, finger Pivot= Ankle, wrist
asked by Tiffany 
MATH
Use multiplying by one to find an expression equivalent to 12/11 with a denominator of 77z. I have an entire worksheet of problems like this. Could someone please explain to me how to complete this type of problem.
asked by Tim 
science
Describe the bonds that "unzip" during the replication of dna.
asked by ben 
MATH
Analyze this function : y(x)= 98xx^2
asked by Overdue 
algebra 2
what is log x=3.2
asked by tarter 
volume
Estimate the volume of a box that is 7 cm long on each side.
asked by kalae 
chemistry
how do calculate the weight of gasoline lost from a 40,000L gasoline tank at 50% saturation, and 20mm hg.
asked by kassie 
chemistry; acids and bases
Since Ka x Kb = Kw, is the conjugate base of a weak acid a weak base or a strong base?
asked by Diem 
medical billing and coding
explain how evaluation and management codes are grouped?
asked by jill velasco 
SCIENCE
how to make electrohemical cell with iron and aluminium foil? I should make that at home and at school teacher will give me acid or something to put metals in that. And i should know how to conect that with wires and make the bulb light  so i should
asked by ANGELA 
maths
what are some assumptions that have to be made when predicting population?
asked by sarah 
economics
what is meant by utility and how does it relate to purposeful behavior.
asked by Susan 
Chemistry
Mg+ 2HCl>MgCl2+H2 The mass of the HCl is 24.852 g mass of the Mg is .990 g and the mass of the calorimeter is 3.711 g. How do I calculate the heat of the reaction of all this please?
asked by Kevin 
chemistry
Write a net equation for the reaction between aqueous solutions of HBr and NH3.
asked by jeff 
7th grade
How can hardware,software,and the user of a computer work together to complete a task?
asked by Anonymous 
chemistry
Write a net equation for the reaction between aqueous solutions of Na2HPO4 and H2CO3.
asked by brad 
Physics
In using a slide wire potentiometer, show a proof for the equation Vx = Cx where V = the voltage drop, and C = the position along the slide wire potentiometer.
asked by Matt 
algebra
Can someone tell me where I can get help to solve this or how to solve this? √(c^2 – d^2) * (c^2 – d^2) Thank you.
asked by homework 
adult education
HOW DID THE MEDIA INFLUENCE THE PUBLIC DURING THE CIVIL RIGHTS AREA IN AMERICA.
asked by Anonymous 
Maths
Evaluate the triple integral _E (xy)dV where E is a solid tetrahedron with vertices (0,0,0), (4,0,0), (0,1,0), (0,0,4) I just can't seem to find the limits, of x,y and z
asked by Salman 
Calculus
Evaluate the triple integral _E (xy)dV where E is a solid tetrahedron with vertices (0,0,0), (4,0,0), (0,1,0), (0,0,4) I just can't seem to find the limits, of x,y and z
asked by Salman 
History (social oppression)
I'm having trouble understanding what social oppression is. Can it be applied to poor hating on other poors?
asked by Patrick 
math
let f be a polynomial such that f(x^2+1)=x^4+4x^2. determine f(x^21)
asked by sarah 
COM 220
In "A Nation Apart" what is the thesis statement in the article? what strategies does the author use to formulate his argument? and what makes the argument viable and compelling?
asked by Heather Kennedy 
college
The vacuum in the doubledwalled vacuum bottle takes care of heat flow by what?
asked by Sue 
Stonewall
The heaviest human of all times weighed 486 kg. This is 12 kg less than 6 times Juan's weight. How much does Juan weigh?
asked by Lisa 
English
Hi there, I am currently in the progress of writing a essay for my sister's keeper but I am having trouble creating a thesis statement. The idea I want to focus on is about family and the importance of balance and how one member's difficulties can affect
asked by Sarah 
COM/220
This particular DQ is due on Day 3. Please post your response to the following: o How do the writers of this documentary “The Origins of AIDS” organize information to build their argument? o Do they include any counter arguments? Why or why not? o What
asked by Liz 
physiology
Fatty acids from the GI lumen are moved across the epithelium via _________, and they are absorbed into the ________. a.Diffusion; mucosal capillaries b.Diffusion; lacteals c. Mediated transport; hepatic portal capillaries or d.Active transport; hepatic
asked by Jerica 
Bias, Rhhetorical Devices and Argumnetation
I need help with this assignment: A time for choosing by Ronald Reagan (1964)
asked by Sharon 
Science (Organic chem)
NO and NO2 are the nitrogen oxide gases being produced. Give the balance equation for both.
asked by Dana 
physics
With what speed must a muon travel so that its correct (relativistic) momentum is 8.0 percent greater than the value that would be computed nonrelativistically? Give your answer as a ratio to the speed of light
asked by Dave 
science
after spraying crops with ddt for several years, farmers found that populations of insect pests rebounded. one reason was that insects had developed resistance to the insecticide. suggest another reason, based on what you know about populations, pyramids,
asked by joe 
Math
At the National Zoo, 12 out of 25 exhibits contain a mammal. Assuming that there are 375 exhibits, how many many are mammals? A) 11 B) 32 C) 132 D) 300 Here is what I am doing: 12/25 = x/375 375 * (12/25) = (x/375) * 375 180 = x But 180 isn't an option
asked by David 
maths
if M = 3 x 6 ^ (t) find the half life of M
asked by Luke 
1st grade
Sam sees a figure The figure has one face The figure is curved What figure(shape) does Sam see?
asked by robert 
science
what is the pH of the following 1. [H+] = 10 negative 12th power M 2. [H+] = 10 negative 2nd power M 3. [H+] = 10 negative 7th power M
asked by jessica