1. Chemistry

    Please explain how to set this problem: A solution has a density of 1.73 g/ml. If it's weighs 4.3 ounces, what is the volume. ?

    asked by Wanda on May 10, 2014
  2. Chemistry

    "A 25.0% solution of Al2(SO4)3 has a density of 1.75 g/ml. What is the mass of dissolved solute in 40.0 ml of solution?" How would one set this problem up?

    asked by Kathryn on December 8, 2010
  3. chem

    I am still having a little problem with my original question. However, this is what I have done so far. I am not sure what to do with the density of the solution of 0.78 g/mL. The answer I came up with is 5.47 mol/kg. I found the density of the water in

    asked by paula on February 13, 2011
  4. chemistry

    In a laboratory experiment, the density of a concentrated sugar solution was determined by measuring the volume of the solution and corresponding mass. Three students each made a set of measurements using a different balance and used the results to

    asked by helpp on August 30, 2008
  5. science(chem)

    Commercial hydrazine is sold as a 64% solution. Using that as your starting material, how would you prepare a 5% solution of hydrazine? well if it is sold as 64% solution would that mean that it has 64g of hydrazine per 100ml of solvent(water)? and what

    asked by ~christina~ on May 5, 2008
  6. Calculus

    Hi there I am having some troubles trying to do my calculus homework and I really need help trying to do this problem from my homework: Set up the problem and do not solve: The mass of the solid bounded by the surfaces 2x^2 + 2y^2= 9, z=0, z=3 with density

    asked by shylo on December 3, 2009
  7. chemistry

    I'm confused on number 6 on the take home test. in this problem are we going to use the heat capacity of calorimeter is 2.21kJ/c. I'm confused on how to set this problem up 1)I converted 1.000kg in to grams= 1000g 2) I used q=m*c* the change in T

    asked by Cassandra on March 30, 2015
  8. Chemistry

    Why did you need to know the density of the bleach solution? Why didn't you measure the density of h2o2 solution as well? Stoichiometry lab problem

    asked by HELP PLEASE on October 28, 2012
  9. math

    1. give an example of an absolute value inequality whose solution set is the empty set 2. explain why \x+2\ is greater than or = to -4 has all real numbers as its solution set.

    asked by Michelle on September 16, 2008
  10. math

    1. give an example of an absolute value inequality whose solution set is the empty set 2. explain why \x+2\ is greater than or = to -4 has all real numbers as its solution set. please help

    asked by Michelle on September 16, 2008
  11. Chem

    I'm having a lot of trouble with a simple problem. I have a 3.0% by man solution of H2O2 in H2O. The density of thr solution is 1.0 g/mL. I need to find the molarity. How do I do this? So far I have: 3.0g H2O2 x 1 mol/34.02 g= .0881 mol I'm not sure where

    asked by Christopher on March 23, 2007
  12. College Mathematics

    what is the solution for this problem,create three sets, set A, B, and set C by going through the items in your wallet or purse. Set A will be a list of all of these items. Create Set B, from the items in Set A that you think are essential. Create Set C,

    asked by Terrie on May 2, 2010
  13. Chemistry

    Calculate the pH of a solution prepared by mixing 250. mL of 0.174 m aqueous HF (density = 1.10 g/mL) with 25.7 g of an aqueous solution that is 1.50% by mass (density = 1.02 g/mL). I dont understand how to set it up

    asked by Jacob Bell on February 28, 2019
  14. physics

    This is my problem: A particle with a density of 0.9g/ml is suspended in a solution that has a density of 1.1g/ml. It cannot be sedimented. Using the equation that describes the movement of a particle in a centrifugal field, describe why this is true. The

    asked by Dave on February 2, 2013
  15. Chemistry

    queston: the pH of a white vinegar solution is 2.45. this vinager is an aquous solution of acetic acid with a density of 1.09g/mL. What is the mass percentage of acetic acid in the soulution. What exactly do i have to do? do i set up an Ice table. What do

    asked by Anonymous on April 15, 2009
  16. CHEM

    how do I work this question out?: 50.00g of NaCl are dissolved in water to give a solution that contains 2.500% NaCl by mass. The density of the solution is 1.030g/mL. The volume of the solution is: a)941.8mL; b)1.942L; c)2.500L; and, d)50.0mL. I know the

    asked by K on December 11, 2006
  17. A Math Equation...Plz Help...

    |2x + 4| is always larger than or equal to zero. This means that the left hand side of the equation is always 6 or less, so there are no solutions. 6 - 3|2x + 4| = 12 So I just put NO Soution? No solutions, or if you have to write down the solution in the

    asked by Count Iblis on December 2, 2006
  18. chemistry

    A glucose solution contains 55.8g of glucose (C6H12O6) in 455g of water. Calculate the freezing poing and boiling point of the solution. (Assume a density of 1.00 g/ml for water. This what I did, I got moles of C6H12O6, 0.89 moles C6H12O6 then I got the

    asked by Monique on November 4, 2011
  19. College Algebra

    I could not figure out the answer to this Problem: The quadratic function f(x)= -2x^2 =4x +3 can be used to solve the following inequality: -2x^2 -4x < -3 First use the Quadratic Formula to find the x-intercept of f. This problem asks that the answer be

    asked by Lee on October 22, 2010
  20. algebra 1

    A chemist has one solution containing 30% insecticide and another solution containing 50% insecticide. How much of each solution should the chemist mix to get 200 L of a 42% insecticide? My teacher explained how to set up the problem: 3x+5y=84 x+y=200 what

    asked by ben on December 4, 2014
  21. Math

    Can someone explain to me the general procedure used to identify and set up a proportion problem? Repost with a specific problem, so we can use it as an example. I hope this helps a little. Thanks for asking. The following ratios: Map scale - distance

    asked by Jon on June 5, 2007
  22. Math

    Can someone please help me with an algebra problem? -|4-8b|=12 I really get confused with the absolute value symbols and a negative sign outside of them. Don't worry about it; it does tend to be a bit confusing. I'll explain the difference between inside

    asked by Andrea on September 14, 2006
  23. CHEMISTRY

    How many moles of NAOCl are there in 3mL of bleach solution. The density of the solution is 1.005g bleach soln/mL and it is 5.25% by mass (5.25 NAOCl/100g soln. Can someone tell me if I have this set up correctly? 3mL * 1.005g/1ml * 5.25g/100g* 1mol

    asked by amy on April 10, 2007
  24. Chemistry

    A teacher prepares a saturated NaCli solution at 55 Degree C. What is the % by mass 9m/m0 of this solution? what is the concentration of this solution expressed in ppm? What is the molality of this solution? If the density of the solution is 1.07 g/ml,

    asked by nancy on March 21, 2007
  25. CHM 152

    At 20oC, a 2.32 M aqueous solution of Ammonium Chloride has a density of 1.0344g/ml. WHat is the molality of Ammonium Chloride in the solution? The formula weight of NH4Cl is 53.50 g/mol?? I am not sure how to incorporate the density into the problem to

    asked by Car on June 10, 2010
  26. science

    Using Dimensional analysis, how do you set up a problem to find the density when given mass and volume? Suppose the mass of an object is 40 grams and the volume is 20 mL. Density has units of grams/mL. Then density = 40 g/20 mL = 2 g/mL. If this isn't

    asked by Anne on August 21, 2006
  27. Math

    A pharmacy technician is making a 50% solution, how many mL of a 38% stock solution should be added to one pint of a 82% solution? ( just need to know how to set this problem up please)

    asked by Rayne on September 25, 2015
  28. Algebra

    Help!! I am having difficulty with a problem for hours now and if I could get some help, my head might stop pounding.Solve each system graphically. if a system has an infinite number of solutions, use set builder notation to write the solution set. If a

    asked by slomo on January 2, 2015
  29. algebra 2

    can somebody tell me how I am to solve this problem? x+8)(x-19)(x+3)>0 A. The solution set is {x|___} B. The solution is all real numbers. C. There is no solution.

    asked by Nick on June 18, 2010
  30. Chemistry

    An aqueous antifreeze solution is 40.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.05 g/cm3. Calculate the molality, molarity, and mole fraction of the ethylene glycol. molality I actually can do this whole problem EXCEPT for one

    asked by Kyle on November 30, 2015
  31. Chemistry

    I can't figure out how to set up this problem...You have a large amount of 8.00 M stock solution. You need 1.80L of 3.00 M solution for an experiment. How would you prepare the desired solution without wasting any stock solution?

    asked by Nicole on October 5, 2011
  32. Solve the polynomial inequality

    Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation. x^3+x^2+4x+4

    asked by Jill on April 9, 2013
  33. SCIENCE

    I REALLY need help. how do you set p a population density problem??? i totally forget!!

    asked by madison on October 28, 2007
  34. Chemistry

    The mass of the earth is known to be about 5.98 X10^24kg assume that it is approx. spherical with an average diameter of 1.276X10^7 METERS. from these data calculate the average density of the earth(g/cm^3) could the earth be made mostly of water

    asked by ALISON on August 30, 2011
  35. Chemistry

    A 0.3423 g sample of pentane, C5H12, was burned in a bomb calorimeter. The temperature of the calorimeter and the 1.000 kg of water contained therein rose from 20.22°C to 22.82°C. The heat capacity of the calorimeter is 2.21 kJ/°C. The heat capacity of

    asked by Cassandra on March 31, 2015
  36. MATH/ALGEBRA PLEASE

    I am having a real issue with this one problem the problem is : y=1/3x-3 I am supposed to graph the problem and then find the y intercept. First I substituted x with 12. Y=1/3(12)-3 s divided by 12 is 4, now I subtract 3from 4 and get 1 therefore, my first

    asked by Lisa on November 22, 2009
  37. chemistry

    what is the molality of a 10.5% by mass glucose solution?. density of the solution is 1.03g/ml can someone please explain how to do this question. please and thank you

    asked by sam on February 10, 2011
  38. chemistry

    Calculate the pH of concentrated hydrochloric acid if this solution is 24.8 % HCl by weight and has a density of 1.16 g/mL. a. ) -0.77 b. ) -0.83 c. ) -0.90 d. ) -0.98 e. ) -1.01 i got c) by converting density into concentration (mol/L) and then,

    asked by Anonymous on November 2, 2008
  39. Algebra 2 (Quadratic Equations)

    Is the point (-3, -2) a solution of the intersection of the following set of quadratic equations: Y < -X^2 X^2 + Y^2 < 16 I'm not sure how to actually work this problem out. Can anyone help me with this problem please.

    asked by Greg on April 18, 2012
  40. math

    solve the polynomial inequality and graph the solution set on a real number line. set in interval notation. x^3+2x^2-4x-8>0 I have been staring at this problem for the last 15 minutes because I just don't understand it, somebody please help me?

    asked by adrienne on March 26, 2013
  41. calculus

    solve the following inequality 15x-16 less than or equal to 15/x is the point x=0 included in the solution set of the inquality? are the other finite pointsa of the interval included in the solution set? what is the solution set? please show work

    asked by Heather on December 27, 2012
  42. chemistry

    calculate the density of NO3 gas at 0.970mm Hg and 35C Take 1 liter. calculate n in PV=nRT then, density= mass/volume= (n*molmassNO3)/1liter. I STILL DON'T UNDERSTAND HOW TO DO IT COULD U PLEASE EXPLAIN What don't you understand about PV = nRT and how that

    asked by TIFFANY on January 9, 2007
  43. Chemistry

    An aqueous solution is 8.50% ammonium chloride, NH4Cl, by mass. The density of the solution is 1.024g/mL. Calculate the molality, mole fraction, and molarity of NH4Cl in the solution. I know the formulas needed but I'm not sure where to start. M = moles

    asked by S on January 24, 2012
  44. science

    What is the density of Radon (Rn) gas at STP (standard temperature and pressure)? How do I solve/set up this problem? Thank you!

    asked by Cassie on January 21, 2014
  45. algebra

    mineral=aluminite, cryptohalite, fluorannite, graphite, titanium, ziesite density (g/cm^3)=1.68, 2 1/100, 3 7/40, 2.16, 4 2/5, 3.86 1. explain why the densities cannot be represented using set-builder notation. 2. use interval notation to describe a set of

    asked by cece on August 28, 2014
  46. Chemistry

    I need help I do not know how to set up this problem. Calculate the energy to heat three cubes gold aluminum and silver from 15 Celsius to 25 degrees Celsius. Density gold:0.129 J/g degrees C Density aluminum: .896 J/g degrees C Density silver: .235 J/g

    asked by Amber on September 23, 2015
  47. Physics Fluids

    When a crown of mass 14.7 kg is submerged in water, an accurate scale reads only 13.4 kg. Is the crown made of real gold? Ok How do I do this problem I set up my free body diagram Net Force = ma = 0= Ft + Fb - Fg were Ft is the force of tension on the

    asked by Physics Fluids on October 23, 2009
  48. math show work please

    1-11/x+30/x^2=0 A.the solution set is ? B.The solution set is the set of real numbers or C. the solution set is an empty set

    asked by wally on November 25, 2014
  49. Chemistry

    two aqueous solutions (solution A and solution B) contain different non reactive solutes and have densities of 1.021 g/ml and 1.190 g/ml, respectively. when 40.00 ml of solution A is mixed with 10.00ml of solution B what is the density of the mixture? im

    asked by Anonymous on September 5, 2016
  50. Chemistry

    How many grams of formaldehyde, H2CO, are in 500 ml of a 40% solution of formaldehyde in water? (Assume for this problem that the density of the formalin solution is 0.98 g/ml)

    asked by Kelsey on September 19, 2011
  51. Chemistry

    Calculate the osmotic pressure of a 6.0 × 10-2 M solution of NaCl at 20°C (293 K). Okay when I set up problem MRT....I get something totally different from the answer 2.9 atm. Could u please show me your set up to get to 2.9 atm? Thanks a billion!!

    asked by Chemistry Chick on October 29, 2011
  52. Chemistry

    I may need this broken down step by step to understand this problem thanks. A 20.0% by mass solution of phosphoric acid (H3PO4) in water has a density of 1.114 g/ml at 20℃. What is the molarity of the solution?

    asked by Andrew J. DuBois on July 11, 2016
  53. CountIblis, can i bother you

    Countiblis, i know that you might be busy do you mind if i ask you the following for help.Only if you can please. can you explain to me just one more thing so i can undestand it. Now i have an equation which is : 3x = 3x + 5 which I know has no solution to

    asked by jasmine20 on January 3, 2007
  54. Chemistry

    A little confused on this question... I think I would need to take the solute and put it over the solvent, and then use molar mass. Confused on how density plays into this problem. Sucrose is very soluble in water. At 25ºC, 211.4 grams of sucrose will

    asked by Anon on May 6, 2018
  55. Algebra

    Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) qaz

    asked by edward on February 4, 2016
  56. math/algebra

    Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) shannon

    asked by shannon on February 5, 2016
  57. algebra

    Solve the polynomial inequality and graph the solution set on a real number line. Express the solution set in interval notation x^3+x^2+16x+16>0 What is the solution set? (Type your answer in interval notation.) Mike

    asked by MIKE on February 5, 2016
  58. Math

    I do not understand how to figure out my problem below and can not find an example in my book. Can someone give me a suggestion on how I can arrive at my answer. Problem: Write a system of inequalities whose solution set is the region shown. graph

    asked by Jon on April 18, 2008
  59. Chemistry

    Instant cold packs used to treat athletic injuries contain solid NH4NO3 and a pouch of water. When the pack is squeezed, the pouch breaks and the solid dissolves, lowering the temperature because of the following endothermic reaction. NH4NO3(s) + H2O(l) =

    asked by Don on February 1, 2011
  60. math

    Ex 2: -2x+7=22 -2x+7-7=22-7 -2x=15 -2x/(-2)=15/(-2) I do not have to switch the equality sign. Even if I did it would not look any different. x=-7.5 Check: -2x+7=22 -2(-7.5)+7=22 my solution is that x=-7.5 so I will just put that in to see if it works.

    asked by Anonymous on September 22, 2010
  61. chemistry

    20mL ethanol(density=o.789g/mol) is dissolved in sufficient water to produce a 200mL solution. the density of the solution is 0.982g/mL. what is the molarity?

    asked by mj on March 11, 2013
  62. chemistry

    What mass of sucrose should be combined with 491 g of water to make a solution with an osmotic pressure of 8.70 atm at 270 K? (Assume the density of the solution to be equal to the density of the solvent.)

    asked by ashley on August 5, 2010
  63. college chem

    What mass of sucrose should be combined with 524 g of water to make a solution with an osmotic pressure of 8.50 atm at 270 K? (Assume the density of the solution to be equal to the density of the solvent.)

    asked by moe on September 12, 2010
  64. chem

    what is the molality of a solution of 50.0 grams of propanol in 152 mL water if the density of wate is 1.0 g/mL and the density of the solution is 0.78 g/mL

    asked by paula on February 12, 2011
  65. Algebra 1

    Solve each system graphically. Be sure to check your solution. If a system has an infinite number of solutions, use set-builder notation to write the solution set.If a system has no solution, state this. I tried this and found no solution, is this right? x

    asked by slomo on January 8, 2015
  66. Chemistry

    What mass of sucrose (C12H22O11) should be combined with 477g of water to make a solution with an osmotic pressure of 8.15atm at 275K ? (Assume the density of the solution to be equal to the density of the solvent.)

    asked by chemstud on February 8, 2015
  67. Chemistry

    If a soft-drink bottle whose volume is 1.50 is completely filled with water and then frozen to -10 , what volume does the ice occupy? Water has a density of 0.997 at 25 ; ice has a density of 0.917 at -10 . Could you also explain the steps as to how I

    asked by Bob on September 4, 2012
  68. chemistry

    Determine the mole fraction of lithium bromate in a 6.32 M aqueous solution of lithium bromate. The density of the solution is 1.16 g mL-1. I understand that 6.32 M of solution= mols of the compound. I multiplied 1000mL by the density to get grams. I don't

    asked by everest on November 15, 2016
  69. Chemistry

    I am confused about why this is the answer to a practice problem I was given. (answer is c). Could someone explain why/why not for each answer? 2) Solution A is made from 1 L of water and 0.1 moles of Na(CH3COO), and Solution B is made from 1 L of water

    asked by Trixie on March 7, 2010
  70. Chemistry

    80.0 ml of 1.50 M lead (IV) acetate is added to a 65.5 ml solution of 1.25 potassium chloride. 5.84 grams precipitate are collected. what is the percent yield? Calculate the concentrations of all ions remaining in solution. Okay so I know you have to

    asked by Kenzie on November 7, 2016
  71. Chemistry

    i have no idea how to set this problem up! please help! A 22.19-g sample of a solid is placed in a flask. Toluene, in which the solid is insoluble, is added to the flask so that the total volume of solid and liquid together is 50.0 mL. The solid and

    asked by Hannah on August 20, 2012
  72. algebra

    would you help me write a logic application for andy has the cards1,5,and 7 belle has the crds 5,4,and 7 carol has the cards 2,4 and 6 whats the salient facts of the problem? explain the strategy for solving the problem? present a step by step solution for

    asked by deborah cobb on January 22, 2013
  73. Algebra

    Can you please explain this problem to me? Determine whether 30 is a solution of the equation x-13=14. Is 30 a solution? My answer is no. x-13=14 30-13=14 No, not true. Thanks.

    asked by B.B. on February 22, 2010
  74. chemistry

    A solution of HCI has a density of 1.18 g/ml and is 36% (m/m). what is the molarity and molality of this solution? Assume 100g solution. Then the solute is 36 grams. Figure the moles for that. Then, you know density, so you can compute volume

    asked by nancy on March 15, 2007
  75. meaning of a word

    The constitution was an attemt to addrss the problems that existed under the Articles of Confederation. A) list and explain three problems of decentralized power under the articles of confederation. for each problem identify and explain one solution that

    asked by apoorva on August 8, 2006
  76. Math

    Which equation does NOT have the set of all numbers as its solution? 1. |-x| = |x| 2. ||x|| = |x| 3. |-x| = -(-(-x)) 4. -(-x) = x I need help with this problem.

    asked by Misty on December 10, 2014
  77. Chemistry Lab

    You are given 350 mL a stock solution of 1.66E-02 M benzoic acid, MW = 122.125 g/mol. Answer the following questions. A. What is the number of moles present in the original stock solution? B. You need to dilute the benzoic acid stock solution to 1.24E-03

    asked by Natasha on January 11, 2011
  78. Chemistry Lab

    You are given 350 mL a stock solution of 1.66E-02 M benzoic acid, MW = 122.125 g/mol. Answer the following questions. A. What is the number of moles present in the original stock solution? B. You need to dilute the benzoic acid stock solution to 1.24E-03

    asked by Natasha on January 11, 2011
  79. Science

    Madeira uses the water cycle to generate electrical power but this becomes a problem during the summer. What is the problem and explain the renewable energy solution.

    asked by Mileena on June 11, 2017
  80. Math

    1. Which number is a solution of the inequality? 10.68 A)-5 B)-6 C)6*** D)7 3. Which number is a solution of the inequality? 12 < y ( 8 - y ) A. 0 B. 1 C. 2 D. 3*** 4. If N is the set of natural numbers that are factors of 24, choose the selection below

    asked by INeedNachos on October 18, 2017
  81. Math

    Can you use inequalities to figure out this coded word? For each problem  Solve and graph the combined inequality.  State whether the combined inequality is a conjunction or disjunction and explain why.  Determine which letter is in the solution

    asked by Billy on May 16, 2019
  82. chemistry

    How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 gallons of a 4.61 m solution with a density of 1.88 g/mL? i think that this is a dimensional analysis type of question. 1 gal ~ 3485.41 ml. i just need help with the set up, i think...

    asked by Myra on May 11, 2011
  83. Chemistry

    A lab assistant prepared a potassium chloride solution for her class by dissolving 5.34 g of KCl in 152g of water. What is the mass percent of the solution she prepared? Could you help me set this up/show me how to do this problem?

    asked by Julie on April 29, 2011
  84. math show work please

    1/(X+3)+4/(x+5)= 2/(x^2+8x+15) a. the solution set is b. the solution set is all real numbers c. the solution set is empty

    asked by wally on November 25, 2014
  85. Freezing solution

    An ethylene glycol solution contains 26.2g of ethylene glycol (C2H6O2) in 81.4mL of water. Calculate the freezing point of the solution. (Assume a density of 1.00 g/mL for water.) how do I set this up?

    asked by Chemistry on April 27, 2015
  86. Algebra I

    Describe the set of all values indicated by the set {a:-4 < a is greater than or equal to 1}. Beth has $417 available to buy trees for her yard. She will buy the trees from Tim’s Trees & Landscaping, where they cost $37 each. Letting t represent the

    asked by stephaine on August 1, 2010
  87. Math Algebra , high school

    A biologist has three salt solutions: some 5% solution, some 15% solution, and some 25% solution. She needs to mix some of each to get 50 liters of 20% solution. She wants to us twice as much of the 5% solution as the 15% solution. How much of each

    asked by Gina on December 13, 2012
  88. 6th grade

    How do i solve this algebra problem? (5-a)divided by (a+7)=1/4 with 1,2,3, as solution set

    asked by Lucian on December 4, 2008
  89. macroeconomics

    Karmin wants to clean her house, finish her economics problem set, write her English essay, and spend time with her boyfriend. However, she only has time to choose one of these activities. Karmin chooses to finish her economics problem set. Hence, the

    asked by jenna on February 3, 2007
  90. chemistry Who clearly step by step

    What per cent of free s03 can be obtained from 100g oleum, that is labeled with 113.5% h2s04? To 100 ml of 5M naoh solution density 1.2g/ml were added 200ml of another naoh solution with have a density 1.5g/ml and contains 20 mass percent of naoh. What is

    asked by ken on June 29, 2014
  91. CHEMISTRY

    An ethanol-water solution is prepared by dissolving 10.00 ml ethanol C2H5OH (density=0.789g/ml) in sufficient water to produce 100.00 ml of solution with a density of 0.982g/ml. What is the concentration of ethanol in this solution? Expressed as ml.

    asked by ADRIAN on November 13, 2013
  92. precalc

    I'm terrible at pre calc, could someone tell me if the solution set for log subscript 2 x + log sub 2 (x-1)=1 is the solution -1? Using either the elimination or substitution method is the solution set for 4x + y =11 and 2x -y = 7 is the answer (3, -1)?

    asked by eragon on January 13, 2007
  93. Chemistry

    20.7mL of ethanol (density=0.789g/mL) initially at 8.2 degrees Celsius is mixed with 37.1 mL of water (density=1.0g/mL) initially at 25.7 degrees Celsius in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?

    asked by Katie on February 7, 2012
  94. Chemistry

    The Densities of Liquids and solids O.k. so here is my problem. I will give you the whole problem just incase my mistake is somewhere else, but the volume for the metal and the density for the metal in the end seem to be wrong. (Density of unknown liquid)

    asked by Sara on August 22, 2007
  95. Science

    What is the mass of 15mL sample of mercury? Look up the density of mercury. mass = volume x density. Make sure the density is in g/mL. If it isn't you will need to convert it. One place to find density of mercury is at www.webelements.com and click on

    asked by Crystal on November 16, 2006
  96. Chemisry

    What is the % M/M concentration of 5.00 mL of methanol in 25 g solution of methanol in water? The density of methanol is 0.791 g/mL. The density of water is 1.000 g/mL. The density of the solution is 0.995 g/mL. Please show work, thank you!

    asked by Rena on February 23, 2013
  97. Chemistry

    The solubility of Mg(OH)2 in a particular buffer solution is 0.63g/L .What must be the pH of the buffer solution? I am unsure of where to start since this is the first solubility problem that I've done that has included the density.

    asked by Arianna on March 16, 2012
  98. College Chemistry

    Calculate the pH of a solution prepared by mixing 250.mL of 0.174 molal aqueous HF (density=1.10g/mL) with 38.7g of an aqueous solution that is 1.50% NaOH by mass (density= 1.02g/mL).

    asked by Anonymous on March 23, 2011
  99. Chemistry

    A solution is prepared that contains 0.0200 M AgNO# and 0.150 M KSCN. What is the equilibrium concentration of Ag+ ion in this solution? The Kf for Ag(SCN)4^3+ is 1.21x10^10 I'm not even sure how to set up this problem? Would I need to do an ice box?

    asked by nns40760 on November 29, 2014
  100. lab chem

    If toluene (density 0.87) wre used to extract ethylene bromohydrin (density 2.41) from an aqueous solution, a. Could you be certain that the organic solution would form the upper layer? b. by what test could you identify the nonaqueous layer.

    asked by Poole on September 23, 2008

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