
algebra
1) The maintenance crew is doing some work on the arch. The work will be done on the right side of the arch. In order to bring the equipment up the maintenance crew has constructed a temporary ramp from the ground on left side of the arch to the level
asked by reneet on May 28, 2014 
physics
Two forces, of magnitudes F1= 80.0N and F2= 50.0N, act in opposite directions on a block, which sits atop a frictionless surface, as shown in the figure. Initially, the center of the block is at position x1= 3.00cm. At some later time, the block has moved
asked by physics please show steps on June 15, 2011 
Physics please check
Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final T initial) (2531J  1101J) =
asked by Mary on April 15, 2007 
American Government
This is a matching part and I already got the rest but I can't get these two. Here are the questions from column 1: 1. metropolitan government 2. county government Here are the choices from column 2: d. form of government that began largely in the
asked by Cheryl on April 28, 2011 
American democracy
mustiple choice Q. The congessional lawmaking process is biased toward: A> bold new initiatives rather than small adjustments in existing legislative programs B> blocking legislation rather than passing it C> national interest at the expense of local ones
asked by Car on August 11, 2009 
American government
The congressional lawmaking process is biased toward: A. Bold new initiatives rather than small adjustments in existing legislative programs B. National interests at the expense of local ones. C. Blocking legislation rather than passing it. D.
asked by NeNe on February 19, 2013 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ron on April 8, 2010 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ron on April 8, 2010 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronald on April 8, 2010 
CHEMISTRY
Been trying for days to crack this sure it staring me in the face understand princple just can't work out the one I have been given to do. I have to polymerize CH2=CHCHOH with a CH3 under CH next to the OH I need to identify the monomer unit and what
asked by Need help PLEASE on February 28, 2007 
chemistry
The electrochemical cell described by the balanced chemical equation has a standard emf (electromotive force) of 4.05 V. Calculate the maximum electrical work (kJ) the cell has done if 6.8500 mol of F2(g) (Molar Mass  38.00 g/mol) forms. Round your
asked by j on December 4, 2011 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronald on April 8, 2010 
science
How much work is needed to raise a 110kg load of bricks 12m above the ground to a building under construction? According to the law of conservation of energy, the work required equals the change in potential emergy. To get the increase in potential
asked by tasha on February 19, 2007 
CP Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronnie on April 8, 2010 
Physics 1
A shotputter puts a shot (weight = 71.3 N) that leaves his hand at distance of 1.62 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.08 m above the ground. Include the correct sign for work. J
asked by Anonymous on November 17, 2012 
Physics
A shotputter puts a shot (weight = 71.9 N) that leaves his hand at distance of 1.47 m above the ground. (a) Find the work done by the gravitation force when the shot has risen to a height of 2.20 m above the ground. Include the correct sign for work. J
asked by Brandon on November 2, 2008 
Ummmm, LA Help?
Think about the work you completed in your reading role. Determine the ideas that would be most worthy to share in a literary discussion about The Watsons Go to Birmingham—1963. Provide an explanation for your choices. How did the role you selected and
asked by Agala on December 8, 2016 
Physics
Under less than ideal conditions, a student pushes a 6 kg cart holding 2 boxes of books up a ramp to a platform that is 1.8 m high in 42 sec. Each box contains 12 kg of books. The ramp is inclined at an angle of 15 degrees. He pushes w/ a steady force of
asked by Ronald on April 8, 2010 
Physics
a great of effort, time, and money has been spent in the quest for the socalled perpetualmotion machine, which is defined as a hypothetical machine that operates or produces useful work indefinitely and/ or a machine that produces more work or energy
asked by John on November 16, 2016 
world history
How did the rulers of the Canyon peoples deal with the environmental challenges that their region presented? A. They allowed high levels of citizen participation in the running of their local communities. B. They developed a remarkable level of exchange
asked by bob on May 29, 2011 
Physics
A cable lifts a 1370 kg elevator at a constant velocity for a distance of 42 m. What is the work done by the elevator's weight? The elevator weight is actually gravity. Gravity does  mass*g*height of work on the object.
asked by Mary on February 27, 2007 
physics
As a result of doing work a person supplies a machine with 1100 J of energy in 12 seconds. The machine in turn does work and delivers 900 J of energy in 14 seconds to some object. what is the effiecency of this machine?
asked by CB on January 24, 2010 
science
A 4.0 kg box is raised from rest a distance of 6.0 m by a vertical force of 110 N. (a) Find the work done by the force. (b) Find the work done by gravity. (c) Find the final kinetic energy of the box.
asked by ali on October 11, 2010 
college algebra
for the given function f&g, find the following and state the domain of each result f(x)=2x+1/9x5; g(x)4x/9x5 a.(f+g)(x)= what is the domain? b.(f/g)(x)= what is the domain? please show work answer the following for the given quadratic function
asked by spazed out on December 1, 2012 
Health Physics
As a result of doing work, a person supplies a machine with 1100 J of energy in 12 seconds. The machine in turn does work and delivers 900 J of energy in 14 seconds to some object. What is the efficiency of this machine?
asked by Shannon on January 23, 2010 
English
I am doing my application form for a university, it asks for my job information Job Title: I work at Mcdonalds parttime and work in the kitchen, what will my job title be? Kitchen staff? :S
asked by Matthew on January 22, 2012 
Physics
As a result of doing work, a person supplies a machine with 1100 J of energy in 12 seconds. The machine in turn does work and delivers 900 J of energy in 14 seconds to some object. What is the efficiency of this machine?
asked by Anonymous on January 25, 2010 
Language Arts
You are trying to convince your community council to install recycling bins at the local park. Which of the following types of writing could you use most effectively to try to change the situation? A reflective essay about the fun that you and your
asked by Elizabeth on May 22, 2015 
W R I T I N G skills
The abbreviation “et al.” is used when A. two authors share the same last name and the same initials. B. a work has more than three authors listed. C. the title of a work must be shortened. D. two or more authors share the same last name
asked by TYondra on April 16, 2015 
Geometry
The coordinates of a triangle are X(0,0, Y(2h,2h), and Z(4h,0). Is the triangle a right triangle? Show work to support your answer. I don't really know how to solve this, or show m work.
asked by Sally on November 18, 2015 
Business Law
Assume that federal health investigators are pursuing a report that one of your manufacturing plants has a higherthanaverage incidence of cancer among its employees, strecthing back for the files. But if the company turns them over, it might be accused
asked by Colby on October 30, 2011 
algebra
At the local ballpark, the team charges $5.00 for each ticket and expects to make $1,300 in concessions. The team must pay its players $1,800 and pay all other workers $1,500. Each fan gets a free bat that costs the team $3.00 per bat. How many tickets
asked by codi on January 2, 2012 
Algebra
At the local ballpark, the team charges 4$ for each ticket and expects to make 1200$ in concessions. The team must pay its players 2100$ And pay all other workers 1900$. Each fan gets a free bat that costs the team 3$ per bat. How many tickets must be sold
asked by Mckayla on January 18, 2018 
math
Help with this word problem please! Bayside Insurance offers two health plan A, Giselle would have to pay the first $80.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $90.00 but only 20% of the rest. For what
asked by marie on November 17, 2011 
math
Help with this word problem please! Bayside Insurance offers two health plan A, Giselle would have to pay the first $80.00 of her medical bills, plus 25% of the rest. Under plan B, Giselle would pay the first $90.00 but only 20% of the rest. For what
asked by marie on November 17, 2011 
math
princess palace pizza offers two different types of pizza: square pizza and circular pizza. the square pizza is 15 inches long on each side. a square cheese pizza cost 9.00. the circular pizza is 16 inches in diameter and a circular cheese pizza cost
asked by anonymous on August 11, 2018 
personal finance
Sue and Tom Wright are assistant professors at the local university. They each take home about $42,000 per year after taxes. Sue is 37 years of age, and Tom is 35. Their two children, Mike and Karen, are 11 and 9. Were either one to die, they estimate that
asked by andy on June 28, 2010 
Math
The local park has 4 bike rack. Each bike rack can hold 15 bikes. There are 16 bike in the bike rack. What expression shows the total number of empty spaces in the bike racks?
asked by Anonymous on January 25, 2018 
math
A group of 8 office workers order 12 packs of sushi form the local Japanese restaurant for lunch. If the packs of sushi are shared equally, what fraction of a pack will each office worker get for lunch?
asked by Elijah on August 29, 2013 
Health Care Fnancial Accounting
the local school system asks to submit a proposal to do preemployment physicalsfor 60 bus drivers. What financial or accounting informaton is needed to submit the proposal? what shall I charge the school system?
asked by Jerry on August 19, 2010 
algebra
The owner of a local chocalate shop wants to develop a new trail mix. How many pounds of chocalate covered cashews worth $5.00 per pound should be mixed with 10 pounds of granola bites worth $3.00 per pound? 5x+3x=10 8x=10  = x=10/8 lbs. 8
asked by Saniya on January 31, 2016 
HEALTH CARE FINANCIAL ACCOUNTING
The local school district has asked your clinic to submit a proposal to do preemployment physicals for 60 bus drivers. What financial or accounting information do you need to submit the proposal? What will you charge the school district?
asked by Cindy on April 22, 2011 
algebra
Define a variable and write an inequality. Then solve. A local summer baseball team plays 20 games each season. So far, they have won 9 games and lost 2. How many more games must they win this season to win at least 75% of all their games?
asked by Jenn on June 28, 2008 
Social Studies
1.Why Was Stephen Austin able to establish a colony in mexican territory. A.The Mexican Government gave him a land grant B.He Claimed the land for Himself C.The U.S. government gave him an Exemption D.The local farmers were generous
asked by Lui on October 20, 2016 
History
Why was Stephen Austin able to establish a colony in Mexican territory? A. The Mexican government gave him a land grant. B. He claimed the land for himself. C. The U.S. government gave him an exemption. D. The local farmers were generous.
asked by Anonymous on November 14, 2018 
maths
a survey of the local country western radio station produced the following data: 12 songs about a truck driver who is in love while in prison. 13 about a prisoner in love. 28 about a person in love. 18 about a truck driver in love
asked by Anonymous on May 29, 2013 
Adv Algebra and Financial Apllications
The yearly attendance at a local movie theatre is 56,000 and grows continuously at a rate of 4.2% each year. What is the approximate attendance at the movie theatre in nine years? A: 57,789 B: 77,789 C: 81,096 D: 81,724
asked by Tara on August 30, 2017 
History
(So, I have to agree or disagree with regards to the statement provided.. please comment on how I can make my answer better) Confirming Max Weber’s thoughts on the dynamics between religion, economics, and cultureProtestantism and urbanization had a
asked by jamie on February 19, 2012 
English
Identify the correct sentence. A. Carla went to work at 248 Prospect Ave in Brooklyn, NY. B. Carla went to work at 248 Prospect Avenue in Brooklyn, NY. C. Carla went to work at 248 Prospect Avenue in Brooklyn, New York. D. Carla went to work at 248
asked by Susan on May 6, 2014 
English
dentify the correct sentence. A. Carla went to work at 248 Prospect Ave in Brooklyn, NY. B. Carla went to work at 248 Prospect Avenue in Brooklyn, NY. C. Carla went to work at 248 Prospect Avenue in Brooklyn, New York. D. Carla went to work at 248 Prospect
asked by Angela on May 6, 2014 
English
ARRANGE IT IN LOGICAL PARAGRAPH. 1. Planning for a test involves determining the time needed for studying, reviewing notes and previous assignments, and prioritizing the content matter to be studied. 2. Students should determine the format of questions on
asked by Brenda on August 25, 2015 
physics bobpursly help still having trouble
A satellite in a circular orbit around earth with a radius 1.019 times the mean radius of the earth is hit by an incoming meteorite. A large fragment m=60 kg is ejected in the backwards direction so that it is stationary with respect to the earth and falls
asked by Andy on December 2, 2009 
physics
a 6 0 kg piece of aluminum at 645 degrees to celsius is combine with 1.0 kg of ice at 15 degrees Celsius in a thermally isolated calorimeter of negligible heat capacity what is the equalilbrum temperature the mixture evenually reaches?. q1+q2+q3=0 QAl =
asked by sharon on March 10, 2015 
Challenge Help
Ok so, my birthday is coming up and im planning my party. The theme is challenger, and I am finding all the most funest challenges. I am only 12 so nothing painful like the salt and ice challenge. I already have the bean boozled challenge, the watermelon
asked by Kennabug on March 10, 2015 
Physics
A figure skater spins on the ice, holding two weights a distance d from the axis about which he is rotating. At a certain time, he pulls these weights toward his body as shown, causing his rotational inertia to decrease by a factor of 2. How does this
asked by John on March 19, 2011 
chemistry
Can someone please explain how to do this question? A 0.057M solution of a weak acid has a pH of 4.93. Determine the ionization constant, Ka, of the acid. a) 2.1 x 10^4 b) 2.4 x 10^9 c) 4.1 x 10^8 d) 2.8 x 10^7 e) 1.4 x 10^10  Well, to be honest, I
asked by polkadot on April 8, 2011 
more thermo
For the following question I was able to find the heat transfer and the entropy but I am having trouble finding the work done. When i solved delta E = Qnet  Wnet I got Win = Wout but Im not sure that is correct. I think that i need to solve for the final
asked by jody on June 18, 2007 
Physics
A man pushes a 200 N crate up a frictionless incline with a slope of 20 degrees. The crate is raised by 4 m as shown. Assuming the crate moves at constant speed, what is the work done by the man?. I know Work = Force x Displacement. The answer is 800 N.
asked by Serina on March 7, 2017 
chemistry
AgCl Ag^+ + Cl^ NaCl ==> Na^+ + Cl^ Ksp = (Ag^+)(Cl^) = 1.8 x 10^10 Let S = solubility of AgCl, then (Ag^+) = S (Cl^) = S+0.01 Solve for S. Note: A similar problem to this post (0.1 M NaCl instead of 0.01 M NaCl) was on a couple of days ago; the one
asked by Claus on April 4, 2008 
Physics
I need help with these three questions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c)
asked by MJ on January 24, 2010 
physics
A roller coaster (375. kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two nonconservative forces are present: friction does 2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long
asked by Anonymous on February 15, 2012 
physics
A roller coaster (425 kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two nonconservative forces are present: friction does 2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long
asked by loweri on March 21, 2012 
Physics
I need help with these two uestions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c) 1.76J
asked by MJ on January 22, 2010 
Physics
I need help with these three questions, thanks 1)The man lifts a box that weght 185N. The box is lifted 0.80m. How much work does the man do on the box? 2) 0.180kg ball falls 2.5m How much work does the force of gravity do on the ball? a)44J b) .45J c)
asked by MJ on January 23, 2010 
Physics
A roller coaster (340. kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two nonconservative forces are present: friction does 2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long
asked by Xavier on October 24, 2010 
Math
A local computer center charges nonmembers $5.00 per session to use the media center. If you pay a membership fee of $25, you pay only $3 per session. Write an equation that can help you decide whether to become a member then solve the equation and
asked by Amber Olander on February 3, 2009 
Statistics
The regional manager in Exercise 6.10 plans to evaluate the speed of services at five local franchises of the restaurant. For the fives serves, determine the probability that a. None will receive a movie coupon b. two of the five will receive a coupon c.
asked by Josephine on July 20, 2009 
Health
I am trying to understanding what is required " Identify one trend in global health and discuss how this trend may affect public health in your community." Am I right by thinking that this like how prevention of hiv by cdc can affect local communities. I
asked by Nancy on July 26, 2011 
math
In the past, the value of houses a local realtor has sold is normally distributed with a mean of $253,000 with a standard deviation of $65,000. How much does a house have to sell for so that the house is in the bottome 20% of lowest selling houses for the
asked by kayla on August 18, 2018 
child care managment
6. Child care staff should integrate health education into child care programs for A. local police and emergency workers. B. neighbors of young children. C. children, staff, and families. D. the entire communit
asked by sanam on November 22, 2016 
math
mary deposited dimes and quarters into the coinstar machine at her local grocery store. the total money she deposited was 22.15. if mary had 84 dimes, write and solved a linear equation to find the number of quarters she had.
asked by Arif on January 19, 2014 
Chemistry
Compare the natural chemistry that takes place in the environment with the chemistry that takes place due to manmade factors like pollution. Discuss the effect of pollution at the local, regional, national, and global level.
asked by Jenn on February 20, 2012 
math
mary deposited dimes and quarters into the coinstar machine at her local grocery store. the total money she deposited was 22.15. if mary had 84 dimes, write and solved a linear equation to find the number of quarters she had
asked by Arif on January 19, 2014 
Math
A middle school wants to have its students see a movie at a local theater. The total cost of the theater and movie rental is $1,500. What equation shows how the cost per student depends on the number of students who attend? I'm not really sure what this
asked by Angelia on March 8, 2017 
grammar
Can you please tell if the follong questions are true or false (fragment) 1. That movie, one of my favorites, true or false? 2.The local baseball team, needing a good picher true or false? 4. Using a flashlight, he looked under the bed for his shoes true
asked by Stephanie on May 8, 2010 
math
A factory is to be built on a lot measuring 210 ft by 280 ft. A local building code specifies that a lawn of uniform width and equal in area to the factory must surround the factory. a) What must the width of the lawn be? b) And If the dimensions of the
asked by Marie on September 8, 2015 
Physics
The kinetic energy K of an object of mass m moving at a speed v is defined as K=(1/2)mv^2. It seems reasonable to say that the speed of an objectand, therefore, its kinetic energycan be changed by performing work on the object. In this problem, we will
asked by mohd on April 4, 2010 
math
At a local high school,560 out of 1060 students voted to support a community fund drive. What percent of the students did not support the fund drive? 47% is this the correct answer?
asked by natalie on December 19, 2014 
Statistics
A local fire station receives an average of 0.5 rescue calls per day. Find the probability that on a randomly selected day, the fire station will receive fewer than two calls.
asked by HELP on July 14, 2012 
English
I am writing an essay on "No Exit" by JeanPaul Satre. The question is: How does the author's manupulation of time contribute to the effectiveness of the work as a whole. Do not just merly summerise the plot. I know that time in Hell is suspended/ halted.
asked by Jenny on October 11, 2006 
Math3 Questions
Hi. Check my answers? Thanks? Also, if I got any wrong, explain to me why because inequalities confuse me sometimes 1. Julia is allowed to watch no more then 5 hours of tv a week. She has already watched 1.5 hours. Write and solve an inequality to show how
asked by Hei Hei on September 20, 2017 
physcial science
How to solve for Jane (mass 40 kg),standing on slippery ice, catches her leaping dog (mass 15 kg) moving horizontally at 3 m/s. What is the speed of Jane and her dog after the catch?
asked by Cindy on February 12, 2011 
Chemistry
refer to the reaction: 2Mg+O2>2MgO. complete the ICE table 2Mg+ O2 2MgO I 1.25g 25.0g 0g C ? ? ? E ? ? ? I am so lost on the table I have refered to my notes but they are not making any sense. I would really appreciate any help!!
asked by Gracy on October 16, 2011 
Physics
a 78kg hockey player standing on frictionless ice throws a 6.0kg bowling ball horizontally with a speed of 3.0m/s. With what speed does the hockey player recoil?
asked by Sarah on April 27, 2012 
chemistry
at 25˚c the density of water is 0.997g/cm³,the density of ice at 10˚c is 0.917g/cm³. if a soda can volume is 240 ml is filled then frozen at 10˚c, what volume does solid occupy?
asked by tom on February 1, 2011 
physics
A 55.0 g ice cube, initially at 0°C, is dropped into a Styrofoam cup containing 318 g of water, initially at 18.2°C. What is the final temperature of the water, if no heat is transferred to the Styrofoam or the surroundings?
asked by JOHN on April 9, 2012 
Chemistry
NEWW 0.10 M methylamine (CH3NH2) kb= 4.38e4 calc the percent ionization so i did the ICE table to find that x=6.62e3 (that was a typo the first time) and then i divided by .1 and then multiplied by 100. but i got the wrong answer whats did i do wrong?
asked by Spencer on February 16, 2009 
Chemistry
1)How many joules are needed to heat 8.50 grams of ice from 10.0 degrees to 25.0 degrees? 2)Calculate the hydronium ion concentration and the hydroxide ion concentration in blood, the pH of which is 7.3(slightly alkaline)
asked by Mike on January 17, 2008 
Math
1. Find and simplify the volumetosurfacearea ratio for each of the three possible ice cube shapes. You can use this chart. Shape S/A FormulaVolume Formula Cube  S.A=6s^2  V=s^3 SphereS.A+4 pi r^2V=4/3 pi r^3 Cylinder S.A=2 pi r^2+2 pi rh V= pi
asked by Alexia Smith on March 3, 2016 
science
Which of the following gives off more energy than it absorbs? melting ice, burning propane in a gas heater, sublimation of carbon dioxide to carbon dioxide gas, recharging a car battery
asked by lidia on February 19, 2013 
physics
A Styrofoam box has a surface area of 0.78 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 24°C. If it takes 7.6 h for 5.0 kg of ice to melt in the container, determine the thermal
asked by Anonymous on August 30, 2012 
Chemistry
How would I get the Ice of the titration of 40.00ml of 0.100M H2NNH2(aq) having a Kb of 3.0x10^6 by 0.100M HClO4(aq)? Trying to plot a pH curve. I know the combination of acid base is strong acid weak base
asked by Anonymous on November 1, 2011 
physics
A hockey puck of mass 0.05 kg sliding on the ice with velocity 20m/sec is stopped by a goalie in 0.10 sec. what is the magnitude and direction of the force exerted by the goalie on the puck
asked by kwaku on November 13, 2010 
PHYSICS
The density of ice is 0.92 g cm3 & that of sea water is 1.025 g cm3.Find total volume of an iceberg which floats with its volume 800 cm3 above water. ANSWER:7809.5 cm3
asked by MOHIT on February 10, 2012 
physics
A Styrofoam box has a surface area of 0.75 m2 and a wall thickness of 2.0 cm. The temperature of the inner surface is 5.0°C, and the outside temperature is 24°C. If it takes 7.6 h for 5.0 kg of ice to melt in the container, determine the thermal
asked by Ericahelp! on November 9, 2010 
Physics  Heat and phase change
9.4 kJ of energy is available to take a sample of ice initially at 40*C, heat it to it's melting point, melt it, and subsequently heat it to 50*C. What is the mass, in grams, of the largest such sample for which this amount of energy will suffice?
asked by Jos on March 19, 2013 
Chemistry
For a reversible reaction where A + B (both arrows) C + D, the equilibrium constant is represented by kc = 5.3 = (c)(d)/(A)[B]. Initially A and B are present at 2.00 M each. What is the final concentration of A once equilibrium is reached. I made an ICE
asked by Katie on March 12, 2010 
maths
A and B together can do a piece of work in 12 days; B and C together can do it in 15 days. If A is twice as good a workman as C, in how many days A alone will do the same work
asked by Anonymous on January 8, 2013 
maths
A and B together can do a piece of work in 12 days; B and C together can do it in 15 days. If A is twice as good a workman as C, in how many days A alone will do the same work?
asked by Anonymous on January 7, 2013 
Math
Solve the equation or inequality for 3(2y4)=93(y+1)The answer is 2. How do you work it out to get the answer? (x+5)(x3)=9 the answer is 6,4 How do you work it out????
asked by Megan Bill on December 12, 2010