a density of 1.0 M solution of NaCL

29,659 results, page 35

  1. Physics 2 with calculus

    The wires leading to and from a 0.12--diameter lightbulb filament are 1.5 in diameter. The wire to the filament carries a current with a current density of 4.0×105 . what is the current density in the filament?
  2. Science Density

    Water has a density of 1.0g/cm3. Aperson sits in a bath 150cm in length and 90 cm width. Thw water had a depth of 60cm befor the person sat in the bath. after sitting in the bath the water level rose to 68cm. Calculate the mass of the person, giving your answer in kg.
  3. Chemistry

    A sample of methane (CH4) gas contains a small amount of helium. Calculate the volume percentage of helium if the density of the sample is 0.70902 g/L t 273K and 1.00 atm. I know that the sample is at STP and that the 1 mole of gas under these conditions occupies 22.4L, but ...
  4. general chem

    Using the activity series (Table 4.5), write balanced chemical equations for the following reactions. If no reaction occurs, simply write NR. (a) Nickel metal is added to a solution of copper (II) nitrate; (b) a solution of zinc nitrate is added to a solution of magnesium ...
  5. Physics

    Does anybody know the critical density for nuclear fusion within the disk of the solar nebula? This is related to the formation of the solar system. I guess this value should be the minimum density of hydrogen in the nebula that initiates nuclear fission, am I right? I have ...
  6. Algebra

    2. Tell whether the system has one solution infinitely many solutions or no solution. x=-7y+34 x+7y=32 a. one solution b. infinitely many solutions c. no solution*** can you please solve this thank you
  7. College Chemistry Lab

    Suppose that a 2.50x10^-6M solution of red dye No. 2 had an absorbance of 0.585 at its wavelength of maximum absorbance. A second solution of red dye No. 2 is too concentrated to read its absorbance so 5.00 mL of the concentrated dye solution was diluted with water to a volume...
  8. chemistry

    a chemist has a supply of cuso4 solution that contains 230 gram per litre of water. she wishes to make a copper sulphate solution that has a solution of 200.0 grams per litre gow ,uch of her copper sulphate solution should she use and how much water should be added to make ...
  9. Fluid Mechanics

    A 6 kg. piece of metal displaces 1 liter of water when submerged. What is its density? The volume of the water dispaced was given, so... Density metal= massmetal/volumemetal The volume of water displaced is the same as the volume of the metal.
  10. chemistry

    B. Everyone knows that water is supposed to boil at 100° C. Why did your water sample boil at a different temperature? C. While heating two different samples of water at sealevel, one boils at 102o C and one boils at 99.2o C. Calculate the percent error for each from the ...
  11. AP Chemistry

    A buffer solution contains .4mol of formic acid, HCOOH and a .6mol of sodium formate, HCOONa, in 1L of solution. Ka of formic acid is 1.8 x 10^-4. a) calculate pH b) if 100ml of this buffer solution is diluted to a volume of 1L with pure water, the pH does not change. Discuss ...
  12. General Chem

    What do you call a solution that is maid by mixing solid Na2S2O3 5H20 with NaOH? Also, what is the complete balanced equation for mixing the above solution with an aqueous solution of NaClO? Thanks anyone!
  13. Chemistry

    Assuming equal concentrations , rank these solutions by pH. RbOH(aq), NH3(aq), HF(aq) HBr(aq), Ca(OH)2(aq). I know the most acidic solution has the lowest pH and the most basic solution has the highest pH. But how am i supposed to know the pH if i don't know the concentration ...
  14. Chemistry

    Use Ksp to find the concentration of an ion in a saturated solution. Consider a 2.50E-3 M solution of Al2(SO4)3. (a) What [OH^-] is required to initiate precipitation of Al^3+ from the solution? (b) What [OH^-] is required to lower the [Al^3+] to 2.00E-7 M ?
  15. calculus

    solve the logarithmic equation. be sure to reject any value of x that is not in the domain of the orginal logarithmic expression. In square root x+7=2 what is the exact solution? a.)the solution set is ? b.)there are infinitely many solutions c.)there is no solution
  16. Chemistry

    What is the activity coefficient of H^+ in a solution containing 0.073 M HCl and 0.0090 M Ca(ClO4)2? What is the pH of the solution? I believe I have to find the ionic strength of the solution first, but I don't know how to find it when 2 solutions are involved.
  17. Calculus

    Find a general solution to each first ¨C degree ordinary differential equation. If an initial condition is given, find the corresponding particular solution. Write solution explicitly if possible. dx/dt=¡Ì(x+t+1)
  18. chemistry

    . A student added 40.0 mL of an NaOH solution to 90.0 mL of 0.400 M HCl. The solution was then treated with an excess of nickel(II) nitrate, resulting in the formation of 1.06 g of Ni(OH)2 precipitate. Determine the concentration of the original NaOH solution.
  19. chemistry

    . A student added 40.0 mL of an NaOH solution to 90.0 mL of 0.400 M HCl. The solution was then treated with an excess of nickel(II) nitrate, resulting in the formation of 1.06 g of Ni(OH)2 precipitate. Determine the concentration of the original NaOH solution.
  20. Chemistry

    15.00mL sample of a solution of H2SO4 of unknown concentration was titrated with 0.3200 N NaOH. The titration required 21.30mL of the base. What was the normality of the acid solution? what was the molarity of the acid solution?
  21. Chemistry

    Water can be heated in tightly woven baskets by dropping in hot rocks. The technique is useful for cooking in the absence of metal or pottery vessels. Estimate the size (in liters) of basket needed to hold the rocks and water if 5 L of boiling-hot (100°C) water is required. ...
  22. Chemistry

    Water can be heated in tightly woven baskets by dropping in hot rocks. The technique is useful for cooking in the absence of metal or pottery vessels. Estimate the size (in liters) of basket needed to hold the rocks and water if 5 L of boiling-hot (100°C) water is required. ...
  23. Chem

    The following questions refer to the following system: A total of 30.0 mL of a .10M solution of a monophonic acid (Ka = 1.0 x 10 ^-5) is titrated with .20M sodium hydroxide solution. 1) Before the titration begins, the pH of the solution is about A) 2 B) 5 C) 7 D) 9 E) 12 2) ...
  24. Physics

    What is the energy from a hollow cylinder of surface charge density sigma, radius R and charge q? Energy? DO you mean E, the electric field intensity? If you mean Energy, it is an odd question, but the answer is that it is the work it took to put the charge q on the surface. ...
  25. AP CHEMISTRY

    Please could you help me predict the products of the following reactions: ( I cant figure them out) THANX in advance! 1) CaO powder is added to distilled water. 2) Acetic acid solution is added to solid sodium hydrogen carbonate. 3) Potassium permanganate solution is added to ...
  26. Earth Science

    Silver has a density of 10.5 g/cm cubed, and gold has a density of 19.3 g/cm cubed. Which would have the greater mass, 5cm cubed of silver or 5 cm cubed of gold?
  27. Physics

    What is the weight of a granite cube with 25cm in each side (density of granite is 2.9g/cm^3). What is the weight of this cube when it is submerged in the sea.(the density of sea water is 1.03g/cm^3)
  28. Physics

    Can't get correct answer An object weighing 340 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 260 N. Immersed in oil, the object weighs 290 N. (a) Find the density of the object. kg/m3 (b) Find the density of the oil. kg/m3
  29. science

    1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study ...
  30. chemistry

    A gas bulb is connected to an open end manometer. The pressure in the bulb is 0.355 Torr more than atmospheric pressure. If the manometer is filled with mineral oil (density = 0.888 g/cm3), what will be the difference in height between the two sides of the manometer? Density ...
  31. chemistry

    If 100 mL of .03 M HCL solution is added to 100 mL of buffer solution which is .1 M in NH3, and .1 M in NH4Cl, what will be the pH of the new solution?
  32. chem

    To what volume must a solution of 77.8 g H2SO4 in 479.8 mL of solution be diluted to give a 0.34 M solution? volume=_______L
  33. Chemistry

    3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?
  34. Chemistry

    3) You make a solution by dissolving 3.4g Ba(OH)2 in enough water to make 450ml of salt solution. a. What is the molarity of the solution?
  35. Chemistry

    Consider a 0.80M solution of HCN. The Ka of HCN is 6.2x10-10. What are the major species in solution? Calculate the pH of this solution.
  36. Chemistry

    When 7 mL of a solution containing 4 M KNO3 is diluted to 23 mL, a dilute solution is formed. What is the NO3- concentration in 15 mL of the dilute solution?
  37. chemistry

    What is the molarity of an HCl solution if 14.0mL HCl solution is titrated with 22.6mL of 0.155 M NaOH solution?
  38. math

    how many liters of a 5% solution of salt should be added to a 25% solution in order to obtain 1120 liters of a 22% solution
  39. chemistry

    Potassium Chloride 3:4 solution 30ml. How many milliliters of a potassium 1:20 solution and 4:5 solution do you need to prepare the order?
  40. Chem - Acid & Bases

    Please help with the solution: Question asks: A solution has [OH-] = 2.0 X 10 negative ^14. The [H-] in this solution is 2.0 x 10 negative ^14. Thank you for your help. Appreciated.
  41. math

    15L OF 36% Alcohol solution is mixed with 30L of 45% alcohol solution.what is concentration of resultant solution??? (ans 42% how???)
  42. Chemistry

    What is the freezing point of a solution of 1.17g of 1-naphthol, C10H8O, dissolved in 2.00ml of benzene at 20 degrees C? The density of benzene at 20 degrees C is 876g/ml. Kf for benzene is 5.12 degrees C/m, and benzene's normal freezing point is 5.53 degrees C.
  43. Science

    Jake was doing a lab to find the density of metal. Here's his data: mass of the metal sample: 45 grams, volume of metal sample: 4.5 mL. Use his data to determine the density of the metal sample. Can you help? I don't get this.
  44. physics

    A lump of ice of density 0.92g/cm^3 is placed is placed into a tumbler containing a coke.The density of coke is 1.150g/cm^3.What fraction of the lump of ice will be above the surface of the coke
  45. Physics

    An object of mass 50 g floats in a liquid of density 2.5 g/ml. When the object is placed in a liquid of density 2.0 g/ml, it sinks to the bottom of the container. What is the force that the object exerts on the bottom of the container? [g = 10m/s^2 = 10N/kg]
  46. Physics

    A piece of wood of mass 60kg and density 600kg/m3 flows in water of density of 1000kg/m3.calculate (a) volume of water that the wood displaced (b) the fraction of volume of mass and water
  47. Chem

    How much water must be added to 500.mL of .200M HCL to produce a .150M solution? (.500mL x .200M)/.150M = .667mL Correct? A chemistry student needs 125mL f .150M NaOH solution for her experiment, but the only solution avail. is 3.00M. Describe how the student could prepare the...
  48. Algebra 1

    A lab technician has a 15 percent alcohol solution and a 35 percent alcohol solution. She wants to make 100 gallons of a 29 percent alcohol solution. How much of the 15 percent solution should she use?
  49. algebra

    A science teacher has a supply of 50% sugar solution and a supply of 80% sugar solution. How much of each solution should the teacher mix together to get 105 mL of 60% sugar solution for an experiment ?
  50. Math, Can someone check my answers?

    Can someone please check my answers? Tell whether the given equation has the ordered pair as a solution. 11. y = 6x;(3,16) 13. y = -4x; (-2,8) 15. y = x - 3/4; (2,1 1/4) Answers: 11. Not a solution 13. Has a solution 15. Has a solution
  51. math

    a pharmacist mixed some 10% saline solution with some 15% saline solution to obtain 100ml of a 12%saline solution.How much of 10% saline solution did the pharmist use in the mixture.dO NOT UNDERSTAND TO MUCH INFO.
  52. Algebra

    During a science experiment, Nico created a 32%alcohol solution by mixing 8 fluid ounces of a 50% alcohol solution with a certain amount of an 8% alcohol solution. How many fluid ounces of the 32% alcohol solution did he create?
  53. Chemistry -thanks

    Hi,there was an error with the procedure. 1.0g NaOH sample was dissolved in 5ml of water and acidified with 4ml of conc. nitric acid,not dilute nitric acid. This was then made up to 15ml with water.After acidifying with conc. nitric acid instead of dilute nitric acid, no such ...
  54. Chemisry

    The amount of I3–(aq) in a solution can be determined by titration with a solution containing a known concentration of S2O32–(aq) (thiosulfate ion). The determination is based on the net ionic equation Given that it requires 32.9 mL of 0.330 M Na2S2O3(aq) to titrate a 30.0...
  55. Chemistry

    In chemical analysis, it is often necessary to prepare a solution by diluting a stock solution.Calculate how much of a 5.337M NaOH is needed to make 1.669 liters of a 0.063M sodium hydroxide solution. (Remember to include units.)
  56. Chemistry

    Calculate the moles of aqueous calcium carbonate present in a 50.00mL sample of a calcium carbonate standard solution, assuming the standard is known to have a hardness of 125 ppm (hardness due to CaCO3). You can assume that the density of the sample is 1.000 g/mL and the ...
  57. Chemistry

    We had a lab where the standard solution was potassium hdrogenphthalate. In this we added 3 drops of phenolphtalein indicator and then we ran sodium hydroxide into the solution. We did four different flasks and the final readings for these then were 26.00 cm3, 32.00 cm3, 26.10...
  58. Chemistry

    A solution contains an unknown mass of dissolved silver ions. When potassium chloride is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 245 mg. What mass of silver was in the original solution? (Assume ...
  59. chemistry

    cooler water has more dissolved oxygen: hot water has hardly any at all. Oh, so they go to the bottom to get oxygen. Why does cooler water have more dissolved oxygen? Generally gases are more soluble in cold water than warm water. Think of an open coke can in the refrigerator ...
  60. physics

    A foam plastic of density of 0.58g/cm^3 is to be used as a life jacket.What volume of the plastic must be used if it is to keep 20percent by volume of an 80kg physics student above water in a lake if the average density of the student is 1.04g/cm^3
  61. Chemistry

    How many milliliters of water at 25.0°C with a density of 0.997 g/mL must be mixed with 165 mL of coffee at 91.0°C so that the resulting combination will have a temperature of 62.1°C? Assume that coffee and water have the same density and the same specific heat (4.18 J/g...
  62. Math

    Square miles 66, 000 and 1, 000, 000 people. Population density is a rate that is indicates how crowed and area is. A proportion is used to find population density, or number of persons per square mile. Population/area = number of persons/1 square mile. Which of the following ...
  63. chem

    C6H12O6(aq)->2 C2H5OH(aq) + 2CO2(g) Fermentation of 744mL grape juice(density=1.0 g/cm^3) is allowed to take place in a bottle witha V of 825mL until 12% by volume is ethanol (C2H5OH). Assuming CO2 is insoluble in H2O what would the pressure be of the CO2 inside the wine ...
  64. math

    a 5% acid solution is mixed with a 9% acid solution. How many ounces of each solution are needed to obtain 40 ounces of a 6% solution?
  65. general chemistry 1

    The density of diamond is 3.51 g/cm3 and the density of lead is 11.3 g/cm3. If equal masses of diamond and lead are transferred to equal volumes of water in separate graduated cylinders, which graduated cylinder would have the greatest volume change?
  66. AP Physics B

    An empty rubber balloon has a mass of 0.01 kg . The balloon is filled with helium at a density of 0.181 kg/m3 . At this density the balloon has a radius of 0.493 m . If the filled balloon is fastened to a vertical line, what is the tension in the line? The ...
  67. chemistry

    The density of gold is 19.31g/cm3 and the density of platinum is 21.43 g/cm3. If equal masses of gold and platinum are transferred to equal volumes of water in separate graduated cylinders which graduated cylinder would have greatest volume change
  68. Physics

    A shipwrecked mariner is stranded on a desert island. He seals a plea for rescue in a 1.00 liter bottle, corks it up, and throws it into the sea. If the mass of the bottle, plus the message and the air inside, is 0.454 kg, what percentage of the volume of the bottle is ...
  69. Chemistry

    If air has an average density of 1.29 g/l and Co is reported at 2.0 ppm, what volume of air will contain 1.00 mole of Co? There will have to be 1/(2*10^-6) = 500,000 times as much mass of air as CO. The mass of the CO is 28.0 g (1.00 mole), so that requires 14*10^6 g or air. ...
  70. Physics Fluids

    When a block of volume 1.00 × 10–3 m3 is hung from a spring scale, the scale reads 10.0 N. When the same block is then placed in an unknown liquid, it floats with 2/3 of its volume submerged. The density of water is 1.00 × 103 kg/m^3. Determine the density of the unknown ...
  71. chemistry

    When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level rises. Based on this information, what can be said about these two solutions? a.) The unknown solution had the lower concentration. b.)The...
  72. chemistry

    When the glucose solution described in part A is connected to an unknown solution via a semipermeable membrane, the unknown solution level rises. Based on this information, what can be said about these two solutions? a.) The unknown solution had the lower concentration. b.)The...
  73. Chemistry

    I am using 85% ACS grade phosphoric acid. I need to make a 21% phosphoric acid solution with a total volume of 250ml. I have been told that 37ml of the 85% ACS grade phosphoric acid plus 188ml of Deionized water will create the 21% phosphoric acid solution I need to make. I'm ...
  74. Chem I

    Calculate the concentrations of hydronium and hydroxide ions in a solution prepared by dissolving 0.345g of solid NaOH in enough water to make 225mL of solution. Also calculate the pH and pOH of the solution.
  75. chemistry

    suppose you made a buffer solution that was 0.050M in both HC2H3O2 and NaC2H3O2.Would the pH changes resulting from the addition of 0.1 M HCL solution to this buffer solution be the same as those you observed in experiment?
  76. MTH209

    Use the graph of the system to determine the solution. x + y = 4 x+ 3y= 6 What is the solution? Select the correct choice below and fill in an answer boxes in your choice. A. (Type an ordered pair). B. There are infinitely many solutions. C. There is no solution.
  77. chemistry

    To 160.0 mL of a buffer solution containing 0.250 M ammonia and 0.100 M ammonium chloride, 20.00 mL of 1.00M HClO4 are added. a) Calculate the pH of the new solution. b) What becomes the pH if another 20.00 mL of the same acid solution is added?
  78. Calculus-HELP!!!

    Find a general solution to the first – degree ordinary differential equation. If an initial condition is given, find the corresponding particular solution. Write solution explicitly if possible: dx/dt=sqrt(x+t+1)
  79. Chemistry

    You have a vinegar solution you believe to be 0.8 M. You are going to titrate 21.39 mL of it with a NaOH solution that you know to be 0.774 M. At what volume of added NaOH solution would you expect to see an end point? Answer in units of mL
  80. chemistry

    25ml of 0.01M KIO3 solution were put to react with an excess of KI. 32.04ml of the sodium thiosulfate solution were needed to titrate the triiodide ions that were present . What is the molar concentration of thiosulfate in the solution?
  81. Probability

    I need help calculating a c value such that f(x,y) is a probability density function. What makes a function a probability density function?
  82. Chemistry

    The molecular mass of glucose is 180g/mol. you prepare a stock solution of glucose, by dissolving 1.8g of glucose in water to a final volume of 1.0L. The stock solution was then diluted as follows: a. 50mL of the stock solution is added to 450mL of water, b. and then 1.0mL of ...
  83. physics (fluid mechanics: buoyant forces)

    A frog in a hemispherical pod just floats without sinking into a pond with density 1.35 g/cm^3. If the pod has radius 6 cm and negligible mass, what is the mass of the frog? wouldn't one need the thickness of the pad? And what has the density given? The pond water, or the frog...
  84. Physics

    A string of mass m=.1kg is stretched to where its length is L=20m. What is the tension force applied to the string if it takes a pulse 2 seconds to get from one end to the other? m=kg L=20m T=4s mass density =m/L = .1/20 = kg/m Tension =? I know v=sqrt(F_t/mass density) But I'...
  85. Physics

    A raft is constructed of wood having a density of 6.00x102 kg/m3. Its surface area is 5.40 m2 and its volume is 0.45 m3. When the raft is placed in fresh water, to what depth h is the raft submerged by its weight? The density of fresh water is 1000 kg/m3. Hint: Use Newton’s ...
  86. chemistry

    A 10% acid solution is to be mixed with a 50% acid solution in order to get 120 ounces of 20% acid solution. How many ounces of the 10% solution and 50% solution should be mixed?
  87. Chemistry

    The density of aluminum is 2.70g/cm(cubid) and the density of chromium is 7.19 g/cm(cubid). If equal Masses (1g) of aluminum and chromium are transferred to equal columes of water in separate graduated cylinders, which graduated cylinder would have the greates volume change? ...
  88. chemistry

    I can't find a substance apart of water with a pH of 7,so i have a question, i don't know if water is the only neutral substance or if there are more which one's are those? Any salt solution that doesn't hydrolyze in water will be neutral. Any liquid (alcohol, gasoline, etc) ...
  89. chemisty

    Posted by STACY on Monday, December 13, 2010 at 7:56pm. Consider an aqueous solution prepared from 250.0 mL of water and 1.27 g of potassium bromide. Express the amount of potassium bromide in this solution in terms of (a) mass percent (b) mole fraction (c) molarity assume the...
  90. physics

    The air inside a hot air balloon has an average temperature of 71.7° C. The outside air has a temperature of 11.1° C. What is the ratio of the density of air in the balloon to the density of air in the surrounding atmosphere?
  91. Chemistry

    i need to find the; [Cl-] in PbCl2 solution,[Pb2+] in PbCl2 solution, and the ksp given: PbCl2(s)--> Pb2+(aq)+2Cl-(aq) Temp of solution =20.2 volume of Pbcl2 solution=25.00ml mass of dry AgCl2(g)=0.2543g #moles : AgCl(s)=1.77e-3 Cl(aq)=1.77e-3 Pb2+(aq)= 8.85e-4
  92. Chem

    Am I doing this right? Find the concentration of the phosphate ion. 1.00 mL 210 micro molar. DI water added to 25 ml line. 1.00 mL phosphate solution * 1L/1000mL * 210 mol phosphate solution/1L solution * 1.0 *10^-6 mol/ 1 micromol * 1 mol PO4 3- / 1 mol solution = 2.1*10^-7 ...
  93. algebra

    a chemist mixes an 11% alchohol solution with an 8% alchohol solutoins. How many milliliters of each solution should he use to make a 600ml solution that is 8% alchohol solution? Why wouldn't we just use 600ml of the 8% solution to begin with? So 0ml of the 11% and 600ml of ...
  94. chemistry lab

    please help its due at 5 When 0.671 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 109C is observed. Assume the solution's final volume is 200.0 mL, the density is 1.00 g/mL, and the heat capacity is 4.184 J/gC. (Note: Pay attention to ...
  95. CHEMISTRY

    Solution A has pH of 4.6 and solution B has a pH of 8.0 1- What is the (H3O+) in solution A? 2- What is the (OH-) in solution B ?
  96. college chemistry

    need to know what is the theoretical moles of NaCl Any number you choose. The molar mass is about 58.5 if that is what you mean?
  97. chem

    determine the solubility of each of the following grams of solute per 100. g H2O a) NaNO3 at 10°C b) KNO3 at 60°C c) NaCL at 50°C
  98. Chemistry

    How do you determine what ionic substance has more exothermic lattice energy? for example if you compare NaCl and KCl???
  99. Chem

    Which compound does not dissociate a. table sugar b. NaCl C. MgCl2 D. CaCl2 I say b becasue it dissociates 90%, right?
  100. chemisrty

    put in decreasing freezing point 0.10m Na3PO4,0.35m NaCl,0.20 m MgCl2, 0.15 m C6H12O6,0.15 m CH3COOH
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