# 1.3 /73.814 In significant digit notation, divid, and the answer to two significant digits. I will be happy to critique your work

71,152 questions, page 473-
## chemistry

I'm working on substitution organic chemistry problems and I just had a question. There's an equation in which a molecule is treated with methanol in an acetone solution. Would the reaction be SN1 or SN2? I thought that it was SN2 because of the aprotic

*asked by Jin on November 29, 2014* -
## grammar6786

choose the correct answer: Q1. Our teacher, along with several others, (is, are) judging the essays. i put (is) Q2. Which of the scouts is the one who (has, have) the map? i put (has) Q3. The orchestra will play a new medley of songs that (appeals, appeal)

*asked by Anonymous on March 7, 2012* -
## Language Arts

In "The Finish of Patsy Barnes" when Patsy saw Black Boy, his "heart was beating very wildly beneath his jacket" because he? A. Had never ridden in a race before B. Was thinking about his mother's illness. C. Feared his mother's reaction to his riding in

*asked by Gwen on September 18, 2014* -
## Ancient Greece, please help! 💝

Which was the most important effect of the Peloponnesian War? A. Other nations were intimidated by the Greeks. B. Other nations saw Greece's lack of unification as weak. C. Athens and Sparta were able to prosper as separate city-states. D. Athens continued

*asked by Sliverstream on February 15, 2019* -
## chemistry

An unknown metal is found to have a density of 19.300 g/cm^3 and to crystallize in a body-centered cubic lattice. The edge of the unit cell is found to be 0.31627 nm. Calculate the atomic mass of the metal. Im not sure how to approach this problem...when i

*asked by sam on January 24, 2011* -
## Intermediate algebra

If a stone is tossed from the top of a 230 meter building; the heigth of as a function of time is given by h(t)=-9.8t^2-10t+230, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest

*asked by TB on August 22, 2012* -
## chemistry

Sodium chloride is formed by the following reaction: NaOH + HCl --> NaCl + H2O How many grams of water are formed when 10 g of HCl is consumed? Round your answer to one decimal place, do not include units or commas. use the molar masses in your text to two

*asked by keesh on October 15, 2014* -
## Chemistry

Adding water to some chemicals can be dangerous because large amounts of heat are liberated. Which of the following does NOT liberate heat when water is added to it? KNO3 (the answer) NaOH Na CaO H2SO4 I guessed Na simply because it's the only one that's

*asked by Confused on May 2, 2012* -
## english 9th

For numbers 1-2, choose the answer that best completes the sentence. The essayist James McBride is an expert on _______ A. rap and hip-hop music.** B. the Beat poets. C. the roots of reggae and hip-hop music. D. the history of black-white relations.

*asked by yeeeeet on November 29, 2018* -
## literature arts

The director's talent for successful improvisation is illustrated by 1. the use of black spirituals in an opera 2. the composer's brief acquaintance with Harriet Tubman's star 3. the way the other singers support the opera's star 4. last m-minute use of a

*asked by SIMPSON on June 28, 2016* -
## physics

A spring with a spring-constant 2.2 N/cm is compressed 28 cm and released. The 5 kg mass skids down the frictional incline of height 31 cm and inclined at a 18◦ angle. The acceleration of gravity is 9.8 m/s2 . The path is frictionless except for a

*asked by melissa on June 12, 2012* -
## Math

A building in the shapeof a sqaure pyramid is to be covered with one-way reflective glass. One side of the base of the pyramid is 110m. The slant height of the pyramid is 125m. How much felfective glass is needed to cover the four sides fo the pyramid?

*asked by Larry on October 28, 2008* -
## Trigonometry

A clown is juggling at a circus. The path of a ball is given by the parametric equations x=2 cos T + 2 and y = 3 sin T + 3. In what direction is the ball moving? Up and to the right counterclockwise down and to the right clockwise After graphing it and

*asked by Nina on May 29, 2017* -
## physics

A spring with a spring-constant 2.2 N/cm is compressed 28 cm and released. The 5 kg mass skids down the frictional incline of height 31 cm and inclined at a 18◦ angle. The acceleration of gravity is 9.8 m/s2 . The path is frictionless except for a

*asked by melissa on June 12, 2012* -
## Physics

On the question that someone posted.....I asked my teacher on what formula I should use and said I should use this one: V^2= Vo^2+2ax (V^2 is the velocit, Vo is the initial velocity, a is accerlation and x distance . An automobile is traveling at 30 km/hr.

*asked by Rose on September 13, 2015* -
## Chemistry

The following data was obtained from titrating a solution containing 25 mL of 0.0100 M MgCl2 solution, 1 mL of NH3OH buffer, and 10 drops of Calmagite with EDTA. Calculate the concentration of EDTA. Report the answer with three sig figs. Please help it

*asked by shannon on May 13, 2013* -
## Chemistry- colligative properties

Which of the following aqueous solution of equal molality has the lowest freezing point? a. H2SO3 b. NaCl c. NaOH d. Ca(NO3)2 How do you answer this without looking at their i values from textbooks? I know that delta(Fpt) = m * K,f * i and that i is

*asked by Levi on September 28, 2014* -
## Physics

An object, O, is placed 18 cm from the center of a converging lens of focal length, f= 6 cm as shown. O F F (a) On the illustration, sketch a ray diagram to locate the image. (b) Is the image real or virtual? Explain your answer. (c) Using the lens

*asked by Anonymous on April 25, 2011* -
## physics

A ball bounces to 34 percent of its original height. *1) What fraction of its mechanical energy is lost each time it bounces? *2) What is the coefficient of restitution of the ball-floor system? - I was able to solve part one and get an answer of .66, but

*asked by David on April 5, 2016* -
## Physics

A 0.250 kg block on a vertical spring with a spring constant of 4.09 × 10 3 N/m is pushed downward, compressing the spring 0.0900 m. When released, the block leaves the spring and travels upward vertically. The acceleration of gravity is 9.81 m/s 2 . How

*asked by Angel on December 11, 2011* -
## personal finance

Brenda has received a $10,000 gift from her mother and is trying to decide how to invest it.She thinks she would like to invest it in stocks because she knows that stocks have been earning about 10%rate of interest over the last several years.What aspect

*asked by vedrana on March 17, 2010* -
## teaching in early chldhood programs

Which of the following is a common mistake new teachers make when setting up learning centers? A. Planning specific activities for blocks or dramatic play B. Introducing the centers to children so they know how to use them C. Allowing the children to

*asked by Melinda on August 23, 2014* -
## Science

This is an image of the ocean floor. Identify the list of letters in the answer choices that correctly identifies the following sea floor features in the order they are listed here: abyssal plain, continental shelf, submarine canyon, continental slope here

*asked by Cassie on December 13, 2013* -
## Chemistry

Could someone help me with these problems; A)If 5.97mL of a solution of NaCl contains 2.54g of sodium ion, what is the molarity of the sodium chloride solution? -I know M=#moles solute/L but when I do this I get 7.28*10^-3 which is wrong, the answer should

*asked by Adam on January 28, 2011* -
## Math

Don signed an apartment lease for $500 per month. He has a budget of $120 per month for food and $150 for utilities. Please show me how to rite an inequality to show the minimum monthly salary Don needs to earn just for living expenses. How would I graph

*asked by monty on January 26, 2015* -
## Need some info. please

Everyone differs slightly in what they consider attractive or beautiful. Do you believe certain attributes are universally attractive? Do you believe one’s sense of beauty is intrinsic or learned? What influence do the media and one’s peers have on the

*asked by rose - Ms. Sue on May 19, 2008* -
## AP CHEM

Aspirin has the structural formula below. Which functional groups does this molecule contain? I. Acid II. Alcohol III. Ester IV. Ether I have no way of posting the structure, but it is on google images! If you type in aspirin structural formula, it's the

*asked by Anonymous on April 5, 2013* -
## Physics

Your stereo is set to a sound intensity level (SIL) of 60 dB. I'd like to know what this means in terms of energy flow: what is the intensity of the sound wave this produces? Compute your answer in W/m2, but do not enter units. So in my problem it would be

*asked by Student in Need on March 3, 2011* -
## Math

Mabel is installing a square pool in her backyard and wants a circular fence to enclose the pool to create 4 grassy areas around the pool as show in the figure. If the pool is located at the coordinates (1, 5), (5, 8), (4, 1), and (8, 4), what is the

*asked by Zyere on January 5, 2015* -
## Physics

An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 7 s? Answer in units of m. Is it

*asked by Ken on October 4, 2016* -
## math

Mabel is installing a square pool in her backyard and wants a circular fence to enclose the pool to create 4 grassy areas around the pool as show in the figure. If the pool is located at the coordinates (1, 5), (5, 8), (4, 1), and (8, 4), what is the

*asked by billy on January 4, 2015* -
## social studies

I answered the question In what direction did the Qin dynasty expand the most? I said to the South then I was asked how do I think the East China Sea affected the Qin dynasty's expansion? My answer is- The Sea would allow the ability to trade with more

*asked by Reed on January 29, 2011* -
## statistics

Get an answer from tutors to this homework question now:have to: (a) Write the claim mathematically and identify H0 and Ha (b) Find the standardized test statistic Z and its corresponding area. (c) Find the P-value. (d) Decide whether to reject or fail to

*asked by Anonymous on March 13, 2012* -
## HHS255

Clinaero is a company that develops informational and educational multimedia programs specifically for patients considering being part of medical research studies. How helpful would a multimedia program such as the one you viewed be for a patient? Would

*asked by shashana on September 16, 2008* -
## Literature--Please, help me!

These questions regard the essay "Georgia O'Keeffe" by Joan Didion. 1. What do the words "style is character" mean? A: This saying merely means that an artist's character is responsible for his or her artistic choices. 2. Explain how the statement is

*asked by Anonymous on April 5, 2014* -
## math

a patrol boat took 2.5 hours for a round trip 12km upriver and 12km back. the speed of the current was 2 km/h. what was the speed of the boat in still water? ps: i just need to know how to make equations from the question above. it's supposed to create

*asked by lawrence on October 15, 2010* -
## L PreCal

A car is moving at a rate of 65 miles per housr and the diameter of it's wheels is 2.5ft. Find the number of revolutions per minute the wheels are rotating. I have no idea where to begin on this question. How do you find rev per min?? Can someone walk me

*asked by Norah on August 29, 2010* -
## ALGEBRA

Rodney fa fair coin and chooses a ter tiles A, E, I, O AND U. He performs this experiment 50 times to determine the experimental probability that heds is tossed and the letter A is chosen. Whitch o following is st likely to be the experimental probability

*asked by Katie on May 23, 2016* -
## Calculus

The region enclosed by the graph of y = x^2 , the line x = 2, and the x-axis is revolved abut the y-axis. The volume of the solid generated is: A. 8pi B. 32pi/5 C. 16pi/3 D. 4pi 5. 8pi/3 I solved for x as √y and set up this integral: 2pi * integral from

*asked by Anonymous on March 31, 2017* -
## Early Education and Team Building

Family-centered practices include which of the following? A. Organizing assistance according to the talents and strengths of agency staff B. Structuring the delivery of services for the convenience of the agencies C. Focusing on funding issues D.

*asked by Diana on October 19, 2018* -
## college physics

Three negative charges with charge -q occupy the vertices of an equilateral triangle with sides of length L What is the magnitude of the electric field in units of k*q/L^2 at the center of the triangle? Give a numerical answer that is the number that would

*asked by sied on October 22, 2013* -
## Math

Which of the following types of information is NOT suited for display on a scatter plot? A. Relationship between age and number of books read in a year. B. Relationship between height and shoe size. C. Relationship between calories sonsumed and body

*asked by Nikita on March 31, 2015* -
## Algebra

which oft the following types of data s not suited for display on a scatter plot a -- relationship between age and number of books read in a year b -- relationship between height and shoe size c -- relationship between calories consumed and wight d --

*asked by Steve on March 8, 2014* -
## Calc 2

The figure shows a semicircle with radius 1, horizontal diameter PQ, and tangent lines at P and Q. At what height above the diameter should the horizontal line be placed so as to minimize the shaded area? I would post the figure but the website is not

*asked by gabby on March 28, 2016* -
## English

At the end of “Raymond’s Run,” Squeaky has a different attitude about running and about her rival, Gretchen. Describe the actions that demonstrate these changed feelings. What role does conflict play in Squeaky’s changed attitude? Use events and

*asked by Asia on January 31, 2019* -
## english-check over work

Prejudice is “a prejudgment, a conviction, reached beforehand, and shaped by preconceived ideas” (Baird pg 21). Most of the time it is a negative feeling of contempt towards people who are different than oneself. Prejudice is a recurring theme in

*asked by ramla A on April 24, 2008* -
## calculus

5). Find the volume of the solid of revolution generated by rotating the graph of y=8 lnx about the y-axis between y=0 and y=16 Answer choices: 238.39pi, 246.39pi, 230.39pi, 214.39pi, 222.39pi 7). Find the area of the region bounded by y=√x-2, y=9, y=0,

*asked by Sally on April 14, 2013* -
## American government

Which answer best describes why some view the senate as undemocratic? The vice president is the leader of the senate.***** The senate and the house don't have the same powers. Everyone living in the state can can vote for that states Senate regardless of

*asked by . on October 12, 2016* -
## Education/Technology

In selecting software for the classroom, it is first necessary to ensure that A) the software features both text and colorful graphics. B) the software is at the correct grade level for your students. C) the software addresses diverse learning styles. D)

*asked by Lor on February 7, 2013* -
## Adult Development and life Assessment

What separates the thnking of adolescents from that of younger children? 1. Adolescents can think about various possiblities. 2. Adolescents gain the ability ot think about their senses and movement. 3. Adolescents begin to understand how lanuguage is used

*asked by Regina on November 29, 2012* -
## English

2. Choose the term that describes the underlined part of the sentence. Although it was raining fairly hard, the team played its best game ever. (1 point) noun clause adjective clause adverb clause independent clause My Answer: "noun clause" Can someone

*asked by ρσяк on January 22, 2018* -
## American Government

Why was it a problem that Congress did not have the power to tax under the Articles of Confederation? a. Congress wanted to provide more services, but it could not afford to without taxes. b. Congress could not regulate trade between the states. c.

*asked by Steve on January 9, 2018* -
## AP Chemistry

An unknown amount of water is mixed with 350 mL of a 6 M solution of NaOH solution. A 75 mL sample of the resulting solution is titrated to neutrality with 52.5 mL of 6 M HCl. Calculate the concentration of the diluted NaOH solution. Answer in units of M I

*asked by Anonymous on September 20, 2015* -
## math

The sum of 4 y yards and 2i inches equals a. 6iy feet b. (12y+1/6)feet c. 12 1/6 feet d. (12y+24i)feet e. 12 1/6 iy feet please answer and explain

*asked by thomas on May 2, 2014* -
## geography

is the answer sea of Marmara,Aegean Sea, Meditteranean Sea, Red sea, Persian Gulf, gulf of Oman and the Arabian Sea? thanx

*asked by tanya on January 18, 2011* -
## math

A magician has 3 more red hats than black hats and 4 fewer purple hats than black hats and has 14 hatsin all. How many hats of each color does he have. Show how you got the answer.

*asked by zach on September 14, 2009* -
## Math

Shannon opens a savings account with $50. Each week after that she deposits $8 into her account. How many weeks does it take her to save $450? A. 56.25 weeks B. 62.5 weeks C. 52 weeks D. 50 weeks Is the answer A?

*asked by Gwen on September 8, 2014* -
## Math

Javier bought 48 sports cards at a yard sale. Of the cards, 3 over 8 were baseball cards. How many cards were baseball cards? How would I go about figuring out the answer? I am confused.

*asked by Patrick on November 11, 2015* -
## math

three friends are sharing 36 cookies. jerry states that he wants 25% of the cookies, Gary wants 1/2 of the cookies and Terry wants 0.75 of the cookies. how many cookies does each person want? can each person get what they want? Explain your answer.

*asked by kadijah on April 6, 2013* -
## Math

How many cartons measuring 3 feet by 2 feet by 6 inches can be stored in a space that is 15 feet by 9 feet by 24 feet. Assume no space is wasted. Explain your answer.

*asked by Amy on March 29, 2013* -
## Math

Ernesto loses 14.5 pounds in 7 months. Now he weighs 156.5 pounds. Which equation can be used to find out how much he weighed before? A. x+14.5=156.5 B. x-14.5=156.5 C. 7x+14.5=156.5 D. 7x-14.5=156.5 Is the answer B?

*asked by Gwen on September 8, 2014* -
## math

Traveling at 55 miles per hour,approximately how long will it take Michael to drive 250 miles? (1) between 1 and 2 hours (2) between 2 and 3 hours (3) between 3 and 4 hours (4) between 4 and 5 hours (5) between 5 and 6 hours I think the answer is 4?

*asked by Anonymous on February 21, 2016* -
## History

Which of the following is NOT something a geographer can explain to a historian? A.why people populated certain areas B.how people change their environment C.how the environment changes people D.why people like other people I know is D but i need accurate

*asked by Sariah on February 13, 2012* -
## Chemistry

IF 80mg of a radioactive element decays to 10mg in 30 minutes, the half-life of this element is a.10 min b.20 min c.30 min d.40 min the answer is a.10 min but i would like to know why, please help.

*asked by Jazmin on May 30, 2011* -
## math

To secure a 500 meter radio tower against high winds, guy wires are attached to a ring that is 5 meters from the top of the tower. The wires form a 15 degree angle with the tower. Find the distance from the base of the tower to the guy wire anchor in the

*asked by danielle on May 22, 2014* -
## Chemistry

PART 1 >>Trial 1 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 10 ml S2O8^2-, 1 ml starch time to react = 10 seconds >>Trial 2 Reactant Solution A 10 ml I^-, 5.0 ml S2O3^2- Reactant Solution B 5 ml S2O8^2-, 1 ml starch time to react =

*asked by Dan on February 24, 2016* -
## chemistry...DRBobb i have a questionnnn

We actually talked about this before just to remind you im posting the previous post below: ______________________________________________________ ____________________________________________________ And i have a different question regarding a post someone

*asked by Saira on February 8, 2009* -
## Statistics Math

1. What type of car is more popular among college students, American or foreign? One hundred fifty-nine college students were randomly sampled and each was asked which type of car he or she prefers. A computer package was used to generate the printout

*asked by Michael on October 27, 2013* -
## Math

There are 5 Saturdays in February 2020. What day of the week is February 03, 2020? Note: There are 29 days in February 2020. What is the best way to find the answer?

*asked by Kabir on October 13, 2017* -
## English

Which of the following is a compound subject? cats and dogs twenty-two miles cats or dogs each girl or boy my answer cats and dogs

*asked by christopher on April 21, 2010* -
## chemistry

A(g)+ B(g) C(g) + D(g) Kc= 144. If .4 mol of A and B are placed in a 2 Liter container, what will be the concentration of C at equilibrium? I said the concentration of A= .2 because (.4/2=.2) and because 1 mol of A = 1 mol of C, the concentration of C also

*asked by Audrey on November 23, 2010* -
## Math

Find the requested function and state its domain: f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's cancel out and 3/-5 is left. So my answer is 3/-5. Is this correct Now I just need to find the domain which I am not to sure

*asked by Hannah on October 7, 2010* -
## physics

One gram of tungsten has 3.28 × 1021 atoms, and each tungsten atom has 74 electrons. How many electrons are contained in 9.00 g of tungsten? Answer in units of electrons

*asked by jenny on April 19, 2012* -
## Math

Find the requested function and state its domain: f(x)= 4x+3 g(x)=4x-5 Find f/g and its domain. So I did 4x+3/4x-5, so the 4x's cancel out and 3/-5 is left. So my answer is 3/-5. Is this correct Now I just need to find the domain which I am not to sure

*asked by Hannah on October 7, 2010* -
## Language Arts

Information in an entry tells you that salute A. Is used only by military personnel. B. Can be used as both a verb and a noun. C. Can be used as both a verb and a noun. D. Is used as a verb but also never as a noun. Is the answer C?

*asked by beau on September 16, 2014* -
## chemistry

A(g)+ B(g) C(g) + D(g) Kc= 144. If .4 mol of A and B are placed in a 2 Liter container, what will be the concentration of C at equilibrium? I said the concentration of A= .2 because (.4/2=.2) and because 1 mol of A = 1 mol of C, the concentration of C also

*asked by Audrey on November 23, 2010* -
## Calculus/Logarithms

Find the derivative of f(x) = (square root of x)(ln x). Using my notes, I came up with f'(x) = (1/2*square root of x)/x The answer in the back of the book says f'(x) = (2+ln x)/(2*square root of x). Can someone please explain how? Thanks.

*asked by Amy on June 29, 2009* -
## Chemistry

How can I determine the overall electrochemical reaction that proceeds spontaneously? Cd2+ | Cd, Co2+ | Co 1. Cd+Co2+ −¨Cd2++Co 2. Co+Cd2+ −¨Co2++Cd (1. and 2. are answer choices)

*asked by Sara on May 11, 2014* -
## Finance

Question 1: You wish to start a project. Your initial investment is $100000. You generate 0 cash flows for the first 2 years but generate $16000 in year 3 and increase by 15% every year till year 7, after which time they decline by 2% until year 9. You

*asked by A on November 4, 2007* -
## physics

Suppose an object is placed at a distance x from a screen and a converging lens of focal length f is placed between the object and the screen. What is the minimum separation distance x (in terms of f) for a real image to be formed on the screen? Support

*asked by Josh on May 19, 2014* -
## Physics

Water flows into a swimming pool at the rate of 5 . 25 gal / min. If the pool dimensions are 33 . 8 ft wide, 40 ft long and 11 . 1 ft deep, how long does it take to fill the pool? (1 gallon = 231 cubic inches) Answer in units of min

*asked by Sydney on August 30, 2013* -
## English Essay

Which one of the following elements is most important when you're your first draft? A.Making sure your spelling is correct B.Writing grammatically correct sentence C.Getting your ideas on paper D.Checking the puntuation in each sentence ANSWER:C I guess

*asked by SHAYLA on August 7, 2008* -
## Algebra

(sqrt3+5 sqrt6)(sqrt3-5 sqrt6) DRWLS-Just take the difference of the squares of the two terms, sqrt 3 and 5 sqrt6. Then you will have the answer. It will be a negative integer. 3sqrt is 9 6sq rt is 36 I add 5 to one and subtract 5 from the other? 50 and

*asked by Micah on February 3, 2008* -
## Physics

A horse of mass 187 kg pulls a cart of mass 200 kg. The acceleration of gravity is 9.8 m/s2 . What is the largest acceleration the horse can give if the coeﬃcient of static friction between the horse’s hooves and the road is 0.612? Answer in units of

*asked by Lyndsay on December 14, 2017* -
## Algebra 1

Harrison predicted that the actual quotient for 57,872 divided by 305 will be less than the estimate 60,000 divided by 300 =200. Is Harrison correct. Explain how Harrison arrived at his prediction without dividing the actual numbers. Please help answer.

*asked by Ms. Stephie on October 6, 2014* -
## physics

An electron in a vacuum is first accelerated by a voltage of 15600 V and then enters a region in which there is a uniform magnetic field of 0.689 T at right angles to the direction of the electron’s motion. What is the force on the electron due to the

*asked by grace on May 6, 2019* -
## Chemistry

A.) Write a balanced chemical Eq'n for a reaction between MAGNESIUM & HYDROCHLORIC ACID. Answer: Magnesium + Hydrochloric Acid Mg (s) + 2 HCL (ag) ---- MgCl2 (aq) H2(g) B.) Assuming 7.00 g of Magnesium completely react according to the above Eq'N,

*asked by Jen on December 18, 2016* -
## physics

On her trip from home to school, Karla drives along three streets after exiting the driveway. She drives 1.85 miles south, 2.43 miles east and 0.35 miles north. Determine the magnitude of Karla's resultant displacement. explanation on answer please

*asked by hery on October 13, 2016* -
## CALCULUS

If cos(t)=–7/9, find the values of the following trigonometric functions. Note: Give exact answers, do not use decimal numbers. The answer should be a fraction or an arithmetic expression. a) cos (2t) b) sin (2t) c) cos(1/2) d) sin (1/2) i don't even

*asked by Stumped Student on September 22, 2007* -
## Physics

A mine shaft is known to be 57.8 m deep. If you would drop a rock down the shaft, how long would it take for you to hear the sound of the rock hitting the bottom of the shaft knowing that sound travels at a constant velocity of 345 m/s? The answer is

*asked by Alina on October 12, 2010* -
## chemistry

The activation energy, Ea, for a zeroth-order reaction, X-->products, is most readily obtained from the slope of a plot of: (choose from below) -[X] vs time -ln k vs time -rate vs time -[X]^2 vs time -ln[X] vs time -1/[X] vs time -ln k vs 1/T, where T is

*asked by Jin on June 18, 2014* -
## pre cal 11

i am stuck at a question that is asking for the common difference, first term, and general term for the arithmetic sequence the question is t10=50 and t27=152 i found my d=6 and t1=(-4) so know my equation is: tn=(-4)+(n-1)6 i had asken my teacher to tell

*asked by jessica on February 13, 2015* -
## chemistry

Calculate the pH at the equivalence point for the titration of a solution containing 1250.0 mg of hilariamine (MW = 92.5 g/mol, Kb = 8.1×10−4) with 0.1000 M HCl solution. The volume of the solution at the equivalence point is 175.0 mL. (I got the answer

*asked by vivian on May 15, 2011* -
## Honors Physics

Emily makes 0.250 kg of hot tea at 99.0°C. How much ice at 0.00°C must she add to the tea so that the mixture reaches a final temp. of 8.00°C? (You may treat the tea as if its water.) My work: (0.25)(4186)(91) + m(4186)(-8)(3.35 ×10^5)=0 My answer:

*asked by Physics on June 1, 2015* -
## 5TH GRADE MATH

John placed 128 beads in equal rows to make an art project. His friend Mark used 125 beads to make a similar project. Is it possible for their projects to contain the same number of beads in a row? Please show and explain the answer.

*asked by Stephon on November 24, 2013* -
## Physics

8. A 4.70 m long pole is balanced vertically on its tip. What will be the speed (in meters/second) of the tip of the pole just before it hits the ground? (Assume the lower end of the pole does not slip.) I did V^2=0^2+2(9.8)(4.70) and was wrong. I did

*asked by Victoria on April 15, 2015* -
## maths

A small business predicts sales according to a straight line method. if sales were$110000 in the first year and $2000000 in the fourth year find the rate of growth in sales per year .......text book answer is $30,000 per year

*asked by sultana on December 23, 2016* -
## chemistry

Calculate the pH at the equivalence point for the titration of a solution containing 1250.0 mg of hilariamine (MW = 92.5 g/mol, Kb = 8.1×10−4) with 0.1000 M HCl solution. The volume of the solution at the equivalence point is 175.0 mL. (I got the answer

*asked by vivian on May 15, 2011* -
## Physics

8. A 4.70 m long pole is balanced vertically on its tip. What will be the speed (in meters/second) of the tip of the pole just before it hits the ground? (Assume the lower end of the pole does not slip.) I did V^2=0^2+2(9.8)(4.70) and was wrong. I did

*asked by Victoria on April 15, 2015* -
## algebra

the primeter of a rectangle is 24ft. the length is 2 ft longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width. Is the answer for the lenght 16ft and 8ft for the

*asked by ashley on March 5, 2013*

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