1. chemistry

    In a constant-pressure calorimeter, 75.0 mL of 0.830 M H2SO4 was added to 75.0 mL of 0.310 M NaOH. The reaction caused the temperature of the solution to rise from 23.20 °C to 25.31 °C. If the solution has the same density and specific heat as water,

    asked by Brianna on February 6, 2013
  2. Chemistry

    In a constant-pressure calorimeter, 65.0 mL of 0.320 M Ba(OH)2 was added to 65.0 mL of 0.640 M HCl. The reaction caused the temperature of the solution to rise from 21.98 °C to 26.34 °C. If the solution has the same density and specific heat as water

    asked by Bart on October 8, 2016
  3. Physics

    In a constant-pressure calorimeter, 75.0 mL of 0.810 M H2SO4 was added to 75.0 mL of 0.390 M NaOH. The reaction caused the temperature of the solution to rise from 22.68 °C to 25.34 °C. If the solution has the same density and specific heat as water,

    asked by KTM on October 20, 2014
  4. Inorganic Chemistry

    In a constant-pressure calorimeter, 70.0 mL of 0.340 M Ba(OH)2 was added to 70.0 mL of 0.680 M HCl. The reaction caused the temperature of the solution to rise from 22.00 °C to 26.63 °C. If the solution has the same density and specific heat as water

    asked by Michael on March 11, 2016
  5. chemistry

    In a constant-pressure calorimeter, 60.0 mL of 0.300 M Ba(OH)2 was added to 60.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 21.75 °C to 25.84 °C. If the solution has the same density and specific heat as water

    asked by sam on October 27, 2016
  6. Chemistry

    In a constant-pressure calorimeter, 50.0 mL of 0.300 M Ba(OH)2 was added to 50.0 mL of 0.600 M HCl. The reaction caused the temperature of the solution to rise from 23.77 °C to 27.86 °C. If the solution has the same density and specific heat as water

    asked by Paul83 on April 11, 2016
  7. Inorganic Chemistry

    In a constant-pressure calorimeter, 70.0 mL of 0.340 M Ba(OH)2 was added to 70.0 mL of 0.680 M HCl. The reaction caused the temperature of the solution to rise from 22.00 °C to 26.63 °C. If the solution has the same density and specific heat as water

    asked by Michael on March 11, 2016
  8. chemistry

    In a constant-pressure calorimeter, 75.0 mL of 0.950 M H2SO4 was added to 75.0 mL of 0.460 M NaOH. The reaction caused the temperature of the solution to rise from 21.13 °C to 24.26 °C. If the solution has the same density and specific heat as water,

    asked by Lyndzey on April 3, 2013
  9. MATH 11

    Yani wants to make a scale diagram of the floor plan of his school. He wants his diagram to fit on an 8.5in. by 11in. sheet of paper. The school is 650ft long and 300 ft wide at its widest point. a) what would be a reasonable scale for Yani to use so that

    asked by Please Help!!! on July 31, 2013
  10. Chemistry

    Prepare a theoretical titration curve for titration of 25.0 mL of 0.1037 formic acid (HCOOH; pKa = 3.75) solution (diluted to 100 mL volume with deionized water) by 0.0964 M solution of KOH. I have to determine volume of KOH needed to reach equivalence

    asked by Clint on March 5, 2012
  11. statistics

    Assume that the population of heights of female college students is approximately normally distributed with mean m of 66 inches and standard deviation s of 4.00 inches. Show all work. (A) Find the proportion of female college students whose height is

    asked by Tiffany on February 12, 2012
  12. math

    Is there anywher i can go for further explanations on how to solve for the following statements on how to solve them: Dividing writing each result in simplest form & adding & subtracting I searched Google under the key words "fractions divide add subtract"

    asked by jasmine20 on December 4, 2006
  13. statistics

    A survey was mailed to a total of 400 students; 100 were randomly selected from each of the freshman, sophomore, junior and senior classes last semester. What sampling method was used?

    asked by Amy on May 10, 2010
  14. math

    find the volume of the solid obtained by rotating the region bounded by the given curves about the specified line. x=2=2sqrty, x=0, y=9 about the y axis. Is this the disk or shells method and how do I set this problem up?

    asked by sara on August 4, 2014
  15. Math

    List the terms and coefficients. 8x3 – 4x2 + 3 Write using positive exponents only. b–2 Factor completely. 3(x – 2)2 – 3(x – 2) – 6 State which method should be applied as the first step for factoring the polynomial.

    asked by Tomika on May 13, 2007
  16. science

    I am trying to figure out how to teach young students, say 3rd/4th grade the six steps of the scientific method in a simplified way they would understand...Any ideas?? Any examples/and /or sites?? Thanks, jarrad

    asked by Jarrad on October 6, 2010
  17. Health Science

    Please help me. (2) Discus the following diseases under the following - heading) i. Causative agent ii. Method of transmision iii. Signs and symptoms iv. Control and prevent. 1-Gonorrhae 2- HIV and AIDS 3- syphiles.

    asked by somay on June 12, 2016
  18. BioLogY______please help guys

    Limpets and mussels are shellfish that are attached to rocks on the seashore .They don't move around much.Why would the mark recapture method not be a good way of estimating the population size of these animals?

    asked by OwamIII on October 13, 2013
  19. Biostatistic

    The following replicate calcium determinations on a blood sample using atomic absorption spectrophotometry (AAS) and a new colorimetric method were reported. Is there a significant difference in the precision of the two methods?

    asked by Jam on December 20, 2012
  20. History

    Which was the most common method empire builders used to unite vast territories? A- religious tolerance B- economic domination C- cultural diffusion D- military conquest My guess is D.

    asked by Skye on September 26, 2014
  21. AP Chemistry

    Use the oxidation number method to balance the following equations by placing coefficients in the blanks. Identify the reducing and oxidizing agents. _I2+_Na2S2O3-->_Na2S4O6+_NaI

    asked by Anonymous on October 26, 2012
  22. 9th grade world history

    What is the geographic location of ancient Carib? What was their method of substience? What did they make with arts and crafts? What were their religious beilefs? What were their customs? And what was their effect on European contact and culture?

    asked by chasadena smith on August 31, 2009
  23. math

    suppose a new student starts school today and your teacher asks you to teach her how to find decimal equivalents for fractions. what would tou tell her? how would you convince her that your method works?

    asked by stacey on October 4, 2007
  24. Organic Chemistry

    Design a procedure to separate a mixture of alcohols containing methanol, ethanol, 1-pentanol. Explain, with references to intermolecular forces, why this separation method is effective in this situation.

    asked by N on March 27, 2012
  25. Math

    Need help with adding subtracting decimals. In this unit, you learned about fractions that can be written as terminating decimals and fractions that can be written as nonterminating decimals. Create an addition word problem and a subtraction word problem

    asked by Math plz help asap! on September 21, 2016
  26. CAN SOMEBODY HELP MEEEEEEE!!!!!!!!!!!

    Need help with adding subtracting decimals. In this unit, you learned about fractions that can be written as terminating decimals and fractions that can be written as nonterminating decimals. Create an addition word problem and a subtraction word problem

    asked by Math plz help asap! on September 21, 2016
  27. Math

    Need help with adding subtracting decimals. In this unit, you learned about fractions that can be written as terminating decimals and fractions that can be written as nonterminating decimals. Create an addition word problem and a subtraction word problem

    asked by Math plz help asap! on September 21, 2016
  28. chemistry

    for the equilibrium H2+CO2H2O+CO Kc=3.18 at 1106K. if each of the four species was initially present at 3.000M calculate the equilibrium concentration of the CO at this temperature..... OK I can get as far as equilibrium (final) H2O=3.000-x CO=3.000-xx

    asked by Andy on May 9, 2010
  29. history

    The automobile facilitated the idea of worshipping at the altar of materialism. The development of the automobile helped to change the American culture by allowing individuals another avenue to show wealth and treasure it, two critical elements of the New

    asked by David on March 18, 2011
  30. English

    There is a stranger near the museum. You have to give directions to the stranger so that he or she may find the right place. 1. Show him the way to the restaurant. 2. Tell him how to get to the restaurant. 3. Show the way to the restaurant to the stranger.

    asked by John on October 28, 2008
  31. English

    Success comes from hard work. (I will say “NO” to the statement above) Success comes from smart work.

    asked by Jen on August 31, 2011
  32. English

    Hello. Will you please tell me if the following word order is possible in English: "She sometimes (?) doesn't go to work" or is it "Sometimes she doesn't go to work"? Thank you for help.

    asked by Ilma on April 19, 2011
  33. math

    A group of friends went to Mudville to watch the Mudville Sluggers play baseball. On the way to the game, three people rode in each car and seven took the train. On the way home, four people rode in each car and two people took the train. The same number

    asked by lexis green on May 21, 2012
  34. Technology

    is there anything i should add to my answer: 1. There are seven inputs common to all technological systems. List these inputs and give an example of each one. There are seven inputs common to all technological systems. These include people, materials,

    asked by y912 on October 24, 2009
  35. chmistry

    a aqueous solution of hydrochloric acid has concentration of 37. wt % convert in concentration value to molar concentration if the density of the solution is 1.19g/ml molar mass of Hcl=36.46g/mol t

    asked by dahat on March 17, 2014
  36. analytical chemistry

    a buffer solution is 0.2M in acetic acid and in sodium acetate. Calculate the change in pH upon adding 1.0ml of 0.1M hydrochloric acid to 10ml of this solution.(Given pKA of acetic acid is 4.76)

    asked by woo on June 16, 2015
  37. chemistry

    A solution contains an unknown amount of dissolved magnesium (Mg 2+). Addition of 5.50×10^−2 mol of Na2CO3 causes complete precipitation of all of the magnesium. what mass of the magnesium was dissolved in the solution? answer in unit g.

    asked by amanda on October 11, 2010
  38. Chemistry

    Just two more to check, thanks! 1) The pH of a 1.25 M solution of unknown monoprotic acid is 5.43. Determine the value of Ka for this acid. HX H+ + X-. (I obtain 1.0 x 10^-11) 2) Calculate the pH of a solution which is 0.73 M benzoic acid. Ka = 6.5 x 10-5,

    asked by Amanda on May 1, 2014
  39. chemistry

    A standard solution of FeSCN2+ is prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN. The equilibrium concentration of FeSCN2+ ([FeSCN2+]std) for this standard solution is assumed to be ?M.

    asked by thuy on February 22, 2008
  40. chemistry

    how do i do this \? a 4.0mg/dl standard solution is needed. To prepare 100ml of the working standard. How much stock standard of a 1mg/ml (100mg/dl) solution is needed. i don't understand this conceptually / thanks

    asked by Dan_9 on January 21, 2010
  41. High school

    A 15.00ml of NaoH was titrated to the stoichiometric end point with 17.40ml of 0.23M HCL. What is the molarity of NaoH in the solution?. Calculate the mass of NaoH in 15.00ml solution.[H=1, Cl=35.5, Na=23,O=16].

    asked by Favour on August 25, 2015
  42. math

    A student was asked to find the inverse of the function f(x)=3x-7. The student began the solution with the following: Write f(x) = 3x-7 as y = 3x-7 x= 3y-7 The student eventually got the right answer for f^(-1)(x) [inverse notation] but did not get full

    asked by Hasane on March 14, 2013
  43. physics

    A “swing” ride at a carnival consists of chairs that are swung in a circle by 13.5 m long cables attached to a vertical rotating pole, as the drawing shows. Note that the cables make an angle of 60.0o with respect to the vertical, as shown. Suppose the

    asked by korlysse buhay on November 15, 2017
  44. Last science questions I promise please help me

    Which of the following organelles coverts light energy into food? lysosome chloroplast*** nucleus ribosome Which of the following shows the correct order of cell organization starting from the least complex Tissue, Organ System, Cell, Organ Organ System,

    asked by Abigail on September 19, 2017
  45. math

    A rectanglar blacktop with a length of 5x and a width of 3x has been erected inside a rectangular field that has a length of 12x and a width of 7x. What is the area of the part of the field that is not blacktop? (I believe the answer is 69x^2) There is a

    asked by Jane on March 1, 2013
  46. phys hmwk help

    A gas is taken though a single process in which its volume decreases by .25 m^3 as the temp of the gas rises 2deg C. Which of the following people are more likely to have reached the correct conclusion? a. Bob ids this process as adiabatic b. Jill ids this

    asked by Jarod on November 14, 2010
  47. Math

    Maria uses 5 1/3 gallons of gas to drive to work and back four times. How many gallons of gas does Maria use in round trip to work? Maria's car gets 28 miles to the gallon. How many miles is her round trip to work?

    asked by Anonymous on October 29, 2013
  48. Chemistry

    I am really having a hard time doing this question. We were asked to determine the iron content of spinach in a solution. We burned a 5.50g of spinach and added 10 ml of 2.0 M HCl in the spinach ashes. We mixed that and filtered the solution to removed the

    asked by Shia on November 13, 2016
  49. Math

    The planet Neptune is approximately 4.5 * 10^9 kilometers from the sun. The planet Venus is approximately 1.1 * 10^8 kilometers from the sun. Which is the best estimate of how many times as far from the sun Neptune is as Venus? A. about 4 times as far B.

    asked by Kimbo on April 11, 2015
  50. Math

    During the summer break, Allie works as many as 35 hours per week. On Saturdays she spends between two and six hours teaching adults to swim. On weekdays, she can work between 10 and 40 hours teaching swimming lessons at a children's camp. Teaching adults

    asked by Nguyen on April 23, 2012
  51. Statistics

    Let's pretend the Work variable is normally distributed, with a mean/median/mode value of 22 and a standard deviation of 17. Based on these numbers, we can say that approximately 68 percent of students work between ______ and ______ hours per week. Select

    asked by Sarah on November 4, 2011
  52. Math

    Ariel's garden is planted in the shape of a square and has an area of 81 square feet. If she plans to put a fence around the perimeter of the garden, how much fencing will she need? A) 18 ft, B) 41 ft C) 36 ft D) 9Ft I came up with D 9 foot but apparently

    asked by Daniel on May 1, 2013
  53. Molecular Formula

    How do you work out the molecular formula? Generally you convert grams to mols, then find the ratio of the atoms to reach other. But this is all generality. Why don't you post the entire problem, tell us what you know how to do and what you don't

    asked by L0bster_quadrille on February 3, 2007
  54. NATIONAL Goverment

    SOMEONE PLEASE HELP!!!! PLEASE HELP ME!!! A federal system differs from a unitary system in that: ANSWER: (A) power is concentrated in one central government. sub-governments delegate power to the central authority . power is distributed between the

    asked by karen on January 27, 2013
  55. chemistry

    Hydrogen peroxide, H2O2, is used to disinfect contact lenses. What volume of O2, in mL, or O2(g) at 31 degree celsius, and 741mmHg can be liberated from 10.0mL of an aqueous solution containing 3.00% H2O2 by mass? The density of aqueous solution of H2O2 is

    asked by Abby on February 24, 2014
  56. chemistry

    A 100.0 mL portion of 0.250 M calium nitrate solution is mixed with 400.0 mL of .100M nitric acid solution. What is the final concentration of the nitrate ion? BOB PURSLEY PLEASE EXPLAIN MORE THOROUGHLY HOW YOU GOT THE NITRATE ION TO BE .5M

    asked by alex on October 24, 2010
  57. Math

    When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work.

    asked by Kevin on May 9, 2013
  58. Math

    When Sarah takes the bus to work, the trip takes 30 minutes. When she takes the train to work, the trip takes 20 minutes. The average speed to the train is 15 mph faster than the speed of the bus. Find the distance to work.

    asked by Kevin on May 9, 2013
  59. Maths

    A can do work alone in 15 days whereas B can destroy entire work in 20 days. They are working on alternate days with a working on the first day, B working on the second day, then how many days will work completed?

    asked by Hansa Bokade on September 15, 2016
  60. math

    A can do work alone in 15 days whereas B can destroy entire work in 20 days. They are working on alternate days with a working on the first day, B working on the second day, then how many days will work completed?

    asked by shalu on May 1, 2017
  61. Chemistry

    Sorry I have one other question that i'm unsure about. for the solution process of A (s)----> A (aq) the teacher demonstrates upon mixing A in H2O that the temp falls from 22 to 5 degrees C. The soluability of this solid is known to be 28g/100g H2O at 30

    asked by Jake on February 4, 2008
  62. writing

    I was wondering if in this paragraph I was going off topic, plz help, maybe give me some pointers? Im not finished with the paragraph but that's what I have so far and need someones opinion... Compassion is like handing a piece of your heart to another

    asked by Ricky on October 18, 2011
  63. Ma

    Autoparts Inc. produces three types of parts' assemblies: (P,Q,R)and they each require (2,5,3) units of work on machine I and (2,2,4) units of work on machine II respectively. The two machines have respectively (160,190) units of work available per day. It

    asked by Jeff on February 26, 2011
  64. Math

    Autoparts Inc. produces three types of parts' assemblies: (P,Q,R)and they each require (2,5,3) units of work on machine I and (2,2,4) units of work on machine II respectively. The two machines have respectively (160,190) units of work available per day. It

    asked by Tracy on February 27, 2011
  65. English

    I still have more sentences to check. I really hope you can revise them, too. 1) Revise all your sentences orally. 2) Bring the government down (and bring down the government) 3) He stopped to take on the students (to take the students on is possible?) 4)

    asked by Matthew on April 12, 2012
  66. improving your writing

    This was always my worst subject. Can you please check the changes I made? Thank you very much for your time. For the past three months, work-related problems have occurred in the office and need to be addressed. Before Jessica Hilo’s medical leave, the

    asked by jacqui on April 6, 2011
  67. chemistry

    Consider the equilibrium, A + B C, with K=32.217 and initial concentrations of A,B, and C, of 3.665M, 0.883M, and 3.925M, respectively. What is the equilibrium concentration of B 3.665 0.883 3.925 A + B = C Keq=(C)/(A)*(B)= 32.217 Q =

    asked by Rob on February 7, 2007
  68. Thermodynamics

    A cylinder contains one liter of air at room temperature (300 K) and atmospheric pressure (10^5 N/m^2). At one end of the cylinder is a massless piston, whose surface area is 0.01 m^2. Suppose that you push the piston in very suddenly, exerting a force of

    asked by Jane on February 23, 2013
  69. algebra the slope- intercept form

    Find the slope and y-intercept for the graph of each equation: y=x-7 how would you solve this type of equation? i know that with an equation like: y=2x+4 that it would be m=2/1 and b=4. but how would you solve the first one.

    asked by Alie Mae on November 15, 2011
  70. Physics

    Show how the displacement of a runner changed during a sprint race.draw a displacement-time graph to show this data, and use it to deduce the runner's speed in the middle of the race. Displacement (m) 0 4 10 20 50 80 105, Time(s) 0 1 2 3 6 9 12.

    asked by Bilal on November 20, 2018
  71. math

    You and your friend each have a coin. For each round, each of you flips your coin. If both coins show heads, your friend pays you $3. If both show tails, your friend pays you $1. If the coins don't match, you pay him $2. Is this a fair game?

    asked by natalie on February 27, 2011
  72. math

    Need help in solving this word problem. That are the steps? Of the total number of spectators at a circus, 1/4 are men. 2/5 of the remaining number of spectators are women. There are 132 women at the circus show. How many children are at the circus show?

    asked by May on November 16, 2015
  73. math

    the diamond taxi company charges an initial fee of $3.00 plus $2.00 per mile for each ride. a) using the table show the cost (C) of taking a taxi 0-5 miles number of miles cost(c) 1 ? 2 ? 3 ? 4 ? 5 ? can you show me to do the number of miles for 1 and then

    asked by Anonymous on March 28, 2013
  74. Finite Math

    A producer wants to put on a variety show on television. Assume that the producer has 9 skits and 6 commercials available. In how many ways can the producer create a television show? We assume that a skit is never repeated, but (unfortunately) commercials

    asked by Rory on February 17, 2009
  75. math

    the diamond taxi company charges an initial fee of $3.00 plus $2.00 per mile for each ride. a) using the table show the cost (C) of taking a taxi 0-5 miles number of miles cost(c) 1 ? 2 ? 3 ? 4 ? 5 ? can you show me to do the number of miles for 1 and then

    asked by Anonymous on March 28, 2013
  76. Math

    Refer to the following chart. Using the equation (body-size factor X height in centimeters = volume of lungs), calculate the difference in the lung volumes of a male athlete who is 62 inches tall and a female athlete who is 56 inches tall. Show your work.

    asked by In need of an answer fast! on October 1, 2012
  77. stats (please help)

    Assume that the population of heights of male college students is approximately normally distributed with mean  of 69 inches and standard deviation  of 3.75 inches. Show all work. (A) Find the proportion of male college students whose height is

    asked by Celest on July 21, 2011
  78. chemistry

    what is the molarity of a solution of KNO3(molecular mass=101) that contains 404 grams of KNO3 in 2.00 liters of solution? A. 1.00M b. 2.00M c. 0.500M d. 4.00M The definition of molarity is #mols/Liter of solution. Convert 404 g KNO3 to mols (mols =

    asked by Kat on March 26, 2007
  79. Algebra Assignment

    An apple pie uses 4 cups of apples and 3 cups of flour. An apple cobbler uses 2 cups of apples and 3 cups of flour. You have 16 cups of apples and 15 cups of flour. When you sell these at the Farmer’s Market you make $3.00 profit per apple pie and $2.00

    asked by Sam on December 11, 2017
  80. calcq

    2- The earth’s atmospheric pressure p is often modeled by assuming that the rate dp/dh at Which p changes with the altitude h above sea level is proportional to p. Suppose that the pressure at sea level is 1013 millibars (about 14.7 pounds per square

    asked by kaela on April 11, 2007
  81. chemistry

    Polymers are high molecular weight compounds with a repeating structural unit. Polystyrene has the formula (CH CHZ) , where Z is C H and n is an integer. where n is 576 A solution of polystyrene in a solvent is prepared. Would you select H O, ethanol (CH

    asked by alexis on July 21, 2008
  82. chemistry

    H2S + 2NaOH -> Na2S + 2H2O 2.48g of sodium hydroxide is dissolved in water and 1.30g of hydrogen sulfide bubbled through the solution. a) calculate the mass of NNa2S produced in solution b) calculate the mass of the excess reagent that remains unreacted

    asked by Anon on June 5, 2019
  83. chemistry

    When a 3.90-g sample of solid ammonium nitrate dissolves in 60.0 g of water in a coffee-cup calorimeter, the temperature drops from 24.5°C to 19.3°C. Calculate DH (in kJ/mol NH4NO3) for the solution process NH4NO3(s) ---> NH4+(aq) + NO3-(aq) Assume that

    asked by Kevin on July 4, 2012
  84. chemistry

    A solution containing silver (I) ion (an oxidizing agent) is mixed with a solution containing iron (II) ion (a reducing agent). a. What is the balanced equation? b. If the contents of the reaction mixture described above are filtered, what substances, if

    asked by anonymous on January 1, 2010
  85. 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
  86. 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
  87. chemistry

    A solution containing silver (I) ion (an oxidizing agent) is mixed with a solution containing iron (II) ion (a reducing agent). a. What is the balanced equation? b. If the contents of the reaction mixture described above are filtered, what substances, if

    asked by anonymous on January 1, 2010
  88. chemistry

    what volume (in ML) of a 0.150 M HNO3 solution is required to completely react wtih 35.7 mL of a 0.108 M Na2CO3 solution according to the following balanced chemical equation? Na2CO3(aq) + 2 HNO3(aq) --> 2NaNO3(aq) + H2O(l) then, in the reaction above,

    asked by samantha on June 21, 2010
  89. chemistry

    A chemist must dilute 55.6 ml of 1.48 M aqueous silver nitrate (AgNO3) solution until the concentration falls to 1.00M. He'll do this by adding distilled water to the solution until it reaches a certain final volume. Calculate this final volume, in

    asked by Lizzy on August 31, 2012
  90. chem

    You mix 5.32 g of solid magnesium sulfate with 105.24 g of water inside a calorimeter. As the magnesium sulfate dissolves, the temperature of the solution rises from 24.5°C to 30.1°C. Calculate the amount of energy in kJ that was transferred into the

    asked by Anonymous on November 11, 2015
  91. Chemistry

    Solutions are made that contain 0.1 moles of each of the following compounds below in 100 g of H2O. Choose the compound whose solution will have the lowest freezing point. NaBr MgCl2---- KClO3 CO2 MgSO4 I know the answer is MgCl2 but I don't know how to

    asked by Angel on February 10, 2010
  92. Chemistry

    "How many grams of the precipitate will form if 25.5 mL of 4.5 M solution of lead (II) nitrate is allowed to react with 35.5 mL of 3.0 M solution of potassium chloride? What is the concentration of the excess reactant after the reaction has reached

    asked by cj on February 9, 2017
  93. English

    1. Thanks to his father, he succeded in his business. Instead of 'thanks to' can we use 'because of' or 'owing to'? Are they the same in meaning? Does 'thanks to' have a positive connotation? 2. He retired from the work. 3. He retired from the workplace.

    asked by rfvv on March 5, 2010
  94. Mathetmatics Application Problem - Need Help ASAP!

    The question relates to application of sine functions. ------------------ Sunsets are later in the summer than in the winter. For planning a sunset dinner cruise through the 30 000 islands, the cruise planners may find the time, t, in hours (on a 24 hour

    asked by Anonymous on November 4, 2007
  95. Quantitative Methods

    I am trying to use the Goal Seek Method in Microsoft Excel but i keep getting a message that says "Cell must contain a value". Since the cell does contain a value what could be the error.

    asked by Sandra on September 18, 2009
  96. Java

    Need help how to do this not sure how or anything can someone help please. Which class contains the function pow ? Write the statement to use the method pow to compute and output 6.5 3.5.

    asked by Poohboi on July 24, 2016
  97. math

    Find the vertex of the parabola y=3x^2+x+5 which method did they teach you? Completing the square or using a formula? y=3x^2+x+5= 3(x^2 + x/3 + ? ) + 5 = 3(x^2 + x/3 + 1/36 ) + 5 -1/36 = 3(x+ 1/6)^2 + 4 35/36 vertex at x=-1/6

    asked by anonymous on May 22, 2007
  98. Computer Science....PLZ HELP

    DESIGN A METHOD "popOne" IN THE "Stack" CLASS WHICH POPS AN EXISTING MEMBER FROM A STACK.

    asked by Anonymous on March 19, 2008
  99. bus

    What is Alternate Dispute Resolution (ADR)? Which ADR method do you prefer to resolve disputes and why?

    asked by diva on July 29, 2010
  100. methods for teaching

    what is the role of the teacher and the role of the students in the method of situational language teaching??? please help me...a million thanks...

    asked by stunning gurl on December 12, 2007

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