a density of 1.0 M solution of NaCL

29,885 results, page 43
  1. physics

    Glycerin, of density 1260.0 kg/m3, is poured into an open U-shaped tube. Ethyl alcohol, of density 790.0 kg/m3, is then poured into one arm until the height of the alcohol column is 21.4 cm. The two liquids do not mix. What is the difference in height
  2. Chemistry

    Which solution will have the lowest freezing point? 0.25 molal aqueous solution of sucrose 0.5 molal aqueous solution of glucose solution of 180 g of glucose (MW = 180.2 g/mol) in one kg of water. pure water
  3. chemistry

    A solution of NaOH(aq) contains 6.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
  4. Chemistry

    A solution of NaOH(aq) contains 5.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
  5. chemistry

    A solution of NaOH(aq) contains 6.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
  6. Algebra 2

    Joan has 40 liters of a 25% solution. How many liters of a 60% solution should she add to make a 30% solution?
  7. Chemistry

    If you dilute 12.5 mL of a 3.5 M solution to make 213.8 mL of solution, what is the molarity of the dilute solution?
  8. Chemistry

    A solution of NaOH(aq) contains 5.2 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
  9. Chemistry

    If you dilute 11.6 mL of a 3.5 M solution to make 214.8 mL of solution, what is the molarity of the dilute solution?
  10. math

    How many gallons of a 12% indicator solution must be mixed with a 20% indicator solution to get 10 gal of a 14% solution?
  11. Chemistry

    A solution of NaOH(aq) contains 5.4 g of NaOH(s) per 100.0 mL of solution. Calculate the pH and the pOH of the solution at 25 °C.
  12. chemistry

    We add excess Na2CrO4 solution to 27.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.420 grams. What is the molarity of the AgNO3 solution? Answer in
  13. pre-calculus

    solve the following logarithmic equation. be sure to reject any value of x that is not in the domain of the original logarithmic expression. give the exact answer. then, use the calculator to obtain a decimal appromiation, correct to two decimal places,
  14. chemistry

    If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formulas and states of all products. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. aluminum
  15. AP Chemistry

    We add excess Na2CrO4 solution to 68.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.270 grams. What is the molarity of the AgNO3 solution? Answer in
  16. chemistry

    Which of the following is not true in a dynamic equillibrium describing a saturated solution? Choose one answer. a. solid crystalizes from solution b. solid dissolves in the solution c. concentration of dissolved solute remain constant d. rate of
  17. chemistry

    If a precipitation reaction occurs when a solution of one species is added to a solution of the other, enter the formulas and states of all products. Separate by comma. If there is no reaction, enter the formula and state of all ions in solution. magnesium
  18. chemistry

    Calculate the number of grams of reactant left over when 28.35 grams of silver reacts with 50.0 liters of air at STP which is 20.9476 % oxygen by volume. The density of air at STP is 1.292 g/L. attemt at a solution: m = dv = 64.6 g of air moles silver
  19. chem

    If 507 g FeCl2 were used up in the reaction FeCl2 + 2NaOH Fe(OH)2(s) + 2NaCl, how many grams of NaCl would be made?
  20. 10th grade

    Consider the following chemical equation: NaOH (aq) + HCl (aq) ® NaCl (s) + H2O (l), the reactant NaOH?
  21. AP Chemistry

    If 15.0mL of 2.50M NaCl is mixed with 60.0mL of 0.300M Pb(NO3)2, what is the mass of the precipitate
  22. AP Chemistry

    Why would .25 molality of CaCl2 have a larger effect on the freezing point of water than .25 molality of NaCl?
  23. chemistry

    in NaCl, Na+ does not hydrolize but in Cr(NO3)3, Cr3+ hydrolizes to give H+, so when do we know which cation hydrolizes and which doesnt
  24. Chemistry

    Given 2 moles of NaCl, find the number of moles of Na. If you could show me the exact steps, that would be much appreciated.
  25. math

    Find conditions on k that will make the following system of equations have a unique solution. To enter your answer, first select whether k should be equal or not equal to specific values, then enter a value or a list of values separated by commas. Then
  26. math

    A nurse needs to make 30 ml of 5% solution of glucose. She has available bottles containing 5 ml of 7% solution and bottles containing 10 ml of 1% solution. How many 5 ml bottles and 10 ml bottles will she need to make the solution? Bottles of 5 ml of 7%
  27. Maths

    A flat circular disc, of radius R, can be modelled as a thin disc of negligible thickness. It has a surface mass density function given by f(r,φ) = k(1 - r2/R2), where k is the surface density at the centre and r is the distance from the centre of the
  28. Science

    The total amount of ice in the Greenland ice sheet is estimated to be 2.85 million cubic km. Assume the Earth's surface is 70% covered by ocean, and that the Earth's radius is 6300 km. How many meters would sea level rise if the entire Greenland ice sheet
  29. CHEMISTRY

    1. What is the vapor pressure at 25°C of a solution of 1.20g of nephtalene C10H8 in 25.6g of benzone C6H6? The vapor pressure of pure benzene at 23°C is 86.0mmHg the vapor pressure of naphthalene can be neglected. Calculate the vapor pressure lowering of
  30. physics

    A rod of length L has a varying density along its length that satisfies: λ(x) =((x^2/L^2)+1)λo where x = 0 is one end of the rod (which has density λo), and x = L is the other end (which has density 2λo). a. Find mass of the rod in
  31. Science

    When elemental sulfur,S8,is heated with AgF,a gas forms that contains only sulfur and fluorine. The following tests were done to characterize this gaseous product. *The density of the gas was found to be 0.807g/L at 152mmHg and 35 degrees celsius. *When
  32. chem

    An aspirin tablet weighing 0.650 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of
  33. chem

    An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of
  34. Chemistry Urgent Help Please!

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in the above
  35. Chemistry

    When 0.655 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 107C 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 significant
  36. chemistry

    o prepare a 200 mL of aqueous stock solution X, you transferred 50 mL of a known concentration solution into a 200 mL volumetric flask. If you realize that the volumetric flask was contaminated with water droplets after you cleanly transferred the known
  37. science

    1. Which of the following is a reason why a person might want to wear snowshoes if walking a distance in deep snow? (1 point) snowshoes spread the person’s weight out snowshoes reduce the amount of pressure on a given spot snowshoes keep the person from
  38. Chemistry

    Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide, , can be titrated against a solution of potassium permanganate, . The following equation represents the reaction:
  39. Chemistry

    When dry and empty, a flask had a mass of 27.31 grams. When filled with distilled water at 25.0 deg C, it weighed 36.84 grams. After cleaning and drying, the flask was filled with chloroform and found to weigh 41.43 grams. At 25.0 deg C, the density of
  40. science

    how many ml distilled water is required to prepare 2% sucrose solution from 2% 2liter sucrose solution from 20% sucrose solution?
  41. algebra

    What quantity of 40% acid solution must be mixed with a 10% acid solution to produce 540 ml of a 20% acid solution? I'm not sure how to set this up
  42. 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
  43. Algebra

    A saline solution was made by mixing 11 ml of a 36% saline solution and 6 ml of a 53 % saline solution. How do I find the consentration of the new mixture?
  44. Chemistry

    What is the pH of a 150 mL buffer solution containing 0.5 M NaH2PO4 with 0.5 M K2HPO4? Determine the new pH of the solution upon the addition of 10 mL of 1.2 M strong acid to the 150 mL buffer solution above.
  45. Chemistry

    a solution of methanol, CH3OH, contains 55.0 grams of methanol for every 100. grams of water. what is the molality of the solution? Which is my solvent? And which is my solution? Im confused
  46. MATH word prob!

    how many gallons of 70% alcohol solution must be mixed with 30 gallons of 23% solution to obtain a solution that is 60% alcohol? How do I solve this problem?
  47. Chemistry

    a solution is prepared by dissolving 3.7500grams iron(III) oxalate in enough water to make 125.00mL of solution. 1. what is the molar concentration of iron(III) oxalate in this solution? 2. what is the molar concentration of oxalate ions in this solution?
  48. chemistry

    Will this solution form a buffer? 100 mL of .10 M NH3; 100 mL of .15 M NH4Cl Work: NH3= .01 moles NH4Cl= .015 moles .... not sure what else to do. I think we use the H-H equation, but I don't know how to find pKa, or even what pKa is. This should give the
  49. Chemistry

    1) What is the vapor pressure at 25°C of a solution of 1.20g ofnephtalene C10H8 in 25.6g of benzone C6H6? The vapor pressure of pure benzene at 23°C is 86.0mmHg the vapor pressure of naphthalene can be neglected. Calculate the vapor pressure lowering of
  50. Chemistry

    The volume equivalent of CO2(at stp) in the reaction. NaHCO3+HCL=NaCL+H20+CO2 is
  51. Chemistry

    Predict whether each of the following reactions would be exothermic or endothermic. a. CO(g) --> C(g) + O(g) b. 2H(g) + O(g) --> H20(g) c. Na+(g) + Cl-(g) --> NaCl(s) What is the sign of DH in each of these reactions? Please explain. I am very
  52. Chemistry

    Predict whether each of the following reactions would be exothermic or endothermic. a. CO(g) --> C(g) + O(g) b. 2H(g) + O(g) --> H20(g) c. Na+(g) + Cl-(g) --> NaCl(s) What is the sign of DH in each of these reactions? Please explain. I am very
  53. Chemistry

    I'm having a brain malfunction... how to calculate how many grams are in a mole of something? How many grams are in 3.80mol of sodium chloride (NaCl)?
  54. Chemistry

    Predict whether each of the following reactions would be exothermic or endothermic. a. CO(g) --> C(g) + O(g) b. 2H(g) + O(g) --> H20(g) c. Na+(g) + Cl-(g) --> NaCl(s) What is the sign of DH in each of these reactions? Please explain. I am very
  55. Chemistry

    If you mix 20.0 mL of 1.00 x 10-4 mol/L NaCl with 20.0 mL of 2.00 x 10-6 mol/L AgNO3 will a precipitate form ? If it does it will be AgCl, which has a Ksp of 1.80 x 10-10. i'm not quite sure how to figure this out...
  56. Chemistry

    The volume equivalent of CO2(at stp)in the reaction NaHCO3+HCL=NaCL+H2O+CO2 is
  57. physics

    0.5 mol of salt (NaCl) is dissolved in 4.5 mol of water. What is the increase in entropy? Answer a. 13.5 J/K b. 84 J/K. c. 9.8 J/K. d. 2500 J/K.
  58. chemistry lab

    Why do we have to weight the beaker with salt and water before dissolving the Nacl ? why is it incorrect to weight it after we dissolve it
  59. chemistry

    If you had 1L of water, how many grams of NaCl will youi need to mix to the water to lower the freezing point by 24 degrees C?
  60. chemistry

    if i have two salts KCl and NaCl can I say that KCl conducts more electricity because it has an cation with lower ionization energy
  61. Statistics

    Accidents on a bike path. Examining the location of accidents on a level, 5-mile bike path shows that they occur uniformly along the length of the path. Figure 3.4 displays the density curve that describes the distribution of accidents. (a) Explain why
  62. chemistry

    If you add 2 liters of .45% NaCl to 36 liters of blood that has a pH balance of 7.44, what will the new pH be?
  63. Chemistry

    How many mols of NaCl are produced if you start with 5.0 mols of Chlorine?
  64. Chemistry

    how do i tell if something can dissolve into another the question is which f these solvents will dissolve salt, NaCl?
  65. Chemistry

    How many grams of CaCl2 are needed to produce 10.0 grams of NaCl?
  66. science

    2. I need help balancing this Na2(SO4) + CaCl2 „³ NaCl + Ca(SO4)
  67. chemistry

    If you add 2 liters of .45% NaCl to 36 liters of blood that has a pH balance of 7.44, what will the new pH be?
  68. chem

    Nacl what is the metal ion formuala and non metal formula
  69. Chemistry lab

    In my lab class I am having to write a lab experiment and preform it tomorrow. It deals with specific heat of unknown metal and density. the first part you have boil water with the metal in it, and then put it in a cup and measure the temp change. I have
  70. Organich Lab Help Please!!!!!!!!

    You use 100 ml ethylchloride (density 0.92 g/ml) to extract 25 ml ethylene bromohydrin (density 2.41 g/ml) mixed with 100 ml of water. Is the aqueous layer the lower or the upper layer. How could you easily test this. You dissolve sodium chloride 40g. in
  71. chemistry

    a room is 18ft long, 15ft wide and from floor to ceiling is 8ft6inches. what is the rooms volume in cubic meters? i have 6.498716 is this correct? what is the mass of air in the room in kilograms assuming the density of the air is 1.2g/l and the room is
  72. Algebra 116

    I need help with these algebra problems please. 1.Solve by using the substitution method. a. 8x - 3y =-61 7x + 68 = y What is the solution system _____? b. 4m + n =27 m - 2n = 9 What is the solution system_______? c. 8x + 9y = -15 -6x + y = 19 What is the
  73. Chemistry

    A solution contains 1.694 mg of CoSO4 (MW 155.0) per mL. Calculate a) The volume of 0.008640 M EDTA needed to titrate a 25.00 ml aliquot of this solution. moles CoSO4 = 0.001694mg/ 155 g/mol = 1*10^-6 mol Moles EDTA = 1*10^-6mol/0.025L = 0.000436 mol/L (in
  74. Physics

    Why do your vowels examples ("aaah", "eee", "uhh") sound different then when I make them? Explain. Tension, mass density and the length of our vocal cords differ so would that be the reason why they sound different? For instance: a child's voice is usually
  75. chemistry

    PLEASE SHOW PROCEDURE! You wish to prepare an aqueous solution that has a freezing point of -0.100 degrees Celsius. How many milliliters of 12.0 M HCl would you use to prepare 250.0 mL of such a solution? [Hint: Note that in a dilute aqueous solution,
  76. chem 101

    We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.590 grams. What is the molarity of the AgNO3 solution? Answer in
  77. Chemistry

    1) find the hydronium ion concentration, the hydroxide ion concentration and the pH of a 0.000001 M solution of NaOH. 2) which of salts hydrolyze in aqueous solution : (NH4)2S, Na2So3,(CH3COO)2Ca? Write the ionic equationss for the hydrolysis reacrions.
  78. Chemistry

    Copper (I) chloride, CuCL, has Ksp = 1.9 x 10^ -7.calculate the molar solubility of CuCL in A)pure water, B)0.0200M HCl solution C) 0.200M HCl solution, and d) 0.150M CaCl2 solution. I used the ice table and for a) i got 0.000435 M sort of lost for the
  79. chemistry 101

    We add excess Na2CrO4 solution to 42.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.590 grams. What is the molarity of the AgNO3 solution? Answer in
  80. chemistry

    If you were to dissolve 14.00 grams of salicylic acid in enough water to make 400.00 mL of solution, what is the molarity of the final solution? i did M = moles/L so .1014 mol/.4000L = .2535 M is this correct?? The next part of the question is Now you take
  81. Physics

    Lead has a density of 11300 kg/m^3 at 0 degrees celcius. What is the density of lead at 90 degrees celcius?
  82. Chemistry(Please respond)

    I did an experiment to study the effects of changes in conditions on an equilibrium system. The first system was the dissociation of acetic acid. HC2H3O2 -> H^+^ + C2H3O2^-^ <- We had to add 2mL of acetic acid into a test tube and we had to test the
  83. chemistry help DR. BOB

    When 27.20mL of .5 M H2SO4 is added to 27.20 of 1M KOH in a coffee cup calorimeter at 23.5 degrees C, the temp rises to 30.17 degrees C. Calculate delta H of this reaction. (Assume that the total volume is the sum of the individual volumes and that density
  84. Chemistry Lab

    A student who is performing this experiment pours an 8.50mL sample of saturated borax solution into a 10mL graduated cylinder after the borax has cooled to a certain temperature, T. The student rinses the sample into a small beaker using distilled water,
  85. Business comunication

    Which of the following is most likely to persuade the reader ? a.Describe your reader's solution first, explain why it won't work,and then go on to describe your own solution. b.Ignore your opponent's solution and just concentrate on your own. c.Describe
  86. Chemistry

    Explain what happens when you add sodium chloride to boiling water. I know that when sodium chloride is added to water, the boiling point of water increases. What happens when it is added to already boiling water? I know it increases the temperature, I
  87. Dr vsec

    The density of water of ice is 0.917gm/cm-3 and the density of sea water is 1.03gm/cm-3.calculate the ratio volume of ice outside to the volume of ice which is inside the sea water
  88. bio chemistry

    1.)prepare 500mM 100 ML HCL (37% purity, density 1.8) 2.) prepare 0.5N 100 mL HCL(37% purity, density 1.8)
  89. Physics

    A con of soda displaces 3.79 * 10^-4 m^3 of water when completely submerged. Each 0.018 kg can contains 3.54 * 10^-4 m^3. Compare the buoyant force on a can of diet soda of density 1001 kg/m^3 to the force on a can of regular soda of density 1060 kg/m^3.
  90. Physics

    In the rough approximation that the density of the Earth is uniform throughout its interior, the gravitational field strength (force per unit mass) inside the Earth at a distance r from the center is gr/R, where R is the radius of the Earth. (In actual
  91. Chemistry

    For the following crystals, explain how their melting points are related to the bonding forces and the crystal structure. Copper,Cu Water,H2O Sodium chloride,NaCl Diamond,C
  92. Chemistry

    For the following crystals, explain how their melting points are related to the bonding forces and the crystal structure. Copper,Cu Water,H2O Sodium chloride,NaCl Diamond,C
  93. Chemistry

    if NaCl is added to this equation: [Co(OH2)6]2+ + 4 Cl- + heat ->(supposed to be double arrow) [CoCl4]2- + 6 H2O would the equilibrium shift right or left? also same question for the addition of AgNO3.
  94. chemistry

    Which of the following is best described as an acid-base reaction? 1. NaCl + AgNO3 !NaNO3 + AgCl 2. Ca + 2H2O ! Ca(OH)2 + H2 3. 2HgO ! 2 Hg + O2 4. KCl + NH4NO3 ! KNO3 + NH4Cl 5. NH3 + H2O ! NH+ 4 + OH−
  95. physics

    A long, thin straight wire with linear charge density -λ runs down the center of a thin, hollow metal cylinder of radius R. The cylinder has a net linear charge density 2λ. Assume λ is positive. Find expressions for the electric field at the
  96. science 2

    6. When aqueous solutions of table salt and silver nitrate are mixed, a white solid forms. This solid is ____. (1 point)soluble a precipitate an alloy a solute 7. Stainless steel is an example of a ____ solution. (1 point)liquid-solid solid-liquid
  97. chmistry

    When 0.633 g of Ca metal is added to 200.0 mL of 0.500 M HCl(aq), a temperature increase of 103C 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 significant
  98. chemistry

    a 230.0ml sample of a 0.275 molarity solution is left on a hot plate over night the folowing morning the solution is 1.5 molarity. what volume of solvent has evaportated from the 0.275 molarity solution?
  99. need help please

    solve each system graphically. be sure to check your solution. if a system has an infinite number of solutions, use the set-builder notation to write solution set. if a system has no solution, state this. where appropriate, round to the nearest hundredth.
  100. Chemistry

    You have a solution of 0.15M Ba(OH)2 and a solution of H2SO4 whose concentration you want to determine. You start with 25 ml H2SO4 in the Erlenmeyer and titrate in the Ba(OH)2. At the end of the titration, you find that you have used 20.4 ml Ba(OH)2 and an