CHEMISTRY (WEBWORK)

59,669 results, page 96

  1. chemistry

    When 71.43 mL of 0.855 M HNO3 is diluted with 20.57 mL of water, the molarity of the nitric acid becomes
  2. Chemistry

    Zn (0.85M) + Cu (1.10M) in an electrochemical cell. what is the conc of the zinc ion?
  3. chemistry

    Calculate the molarity of a 6% solution of ammoniun nitrate of density 1.025 g/mL
  4. chemistry

    A Bronsted-Lowry acid is a proton donor. True or False
  5. Chemistry

    How can you tell if a compound is polar or nonpolar? Is it just by lewis structures? what would copper (II) phosphate be?
  6. Chemistry

    Describe how you would make a 125 mL of 0.025 M solution of potassium dichromate?
  7. chemistry

    Estimate the volume of one sodium atom using its metallic radius of 186pm please help
  8. chemistry

    What is the final temperature of 1370 g of water, originally at 20.9°C, if it absorbs 47.6 kJ of heat?
  9. Chemistry

    Why is it necessary to use a buret for measuring standard silver nitrate solutio ( volhard)
  10. chemistry

    How would you convert 77 degrees F to kelvins? Can you explain it please because I don't really understand how to get it to Fahrenheit.
  11. chemistry

    Calculate the de Broglie wavelength (in pm) of a hydrogen atom traveling 450 m/s .
  12. Chemistry

    What is the molecular equation for the reaction between sodium (Na) and hydrochloric acid (HCl)?
  13. chemistry

    what is the volume of 4.37 moles of an ideal gas at 26.5 degrees celsius and 1.00 atm?
  14. general chemistry

    Calculate the molarity of each of the following solutions.70.8g C2H60 in 2.51L of solution
  15. chemistry

    A can of soda has 1.50x10^2 calories. Convert this energy to units of joules.
  16. chemistry

    Using molecular polarities, discuss the solubility of the carboxylic acids in water.
  17. Chemistry

    An object has a mass of 128g and a volume of 27cm3. Find the density.
  18. chemistry

    Calculate the Debroglie wavelength of a mass 1.0g traveling at 1.0cm/sec
  19. Chemistry

    which metal does not require having its charge specified in the names of ionic comppounds it forms? a. Au b. Ca c. Cu d. Cr e. Fe
  20. chemistry

    Net Ionic Reaction and molecular Equations of Ca3(PO4)2
  21. Chemistry

    How much NACl do i need to dissolve in grams to make 0.9%solution of 0.25l saline
  22. chemistry

    equilibrium is reached when red hot iron reacts with steam.why?
  23. chemistry

    if I have 3 tablespoons of sugar (15 grams) and dissolve it in 1 cup (~237 mL) and take out 30 mL what is the molarity in the 30 mL?
  24. chemistry

    if I have 3 tablespoons of sugar (15 grams) and dissolve it in 1 cup (~237 mL) and take out 30 mL what is the molarity in the 30 mL?
  25. Chemistry

    Balanced chemical equation for H2O + SO2 --> O3 + H2S + SO3?
  26. chemistry dilution

    Given VLP with concentration 200ug/mL, dilute to 3ug/100ul. Please help me with this; many thanks
  27. chemistry

    'electrolysis of dilute aqueous solutions kcl,cucl2,kl,agno3'?
  28. Chemistry

    What is the wavelength of light (in nm) if the energy of the wave is 1.33x 10^-19 J? How do I work this problem out????
  29. Chemistry

    In the compound PtCl2(NH3)2, what is the percentage of the mass due to nitrogen?
  30. Chemistry

    @ 20 degrees C is 6g CuSO4 in 25g of H2O saturated or unsaturated? How do I figure this out?
  31. chemistry

    The densities of the liquid and solid states of a substance are often similar. Explain.
  32. chemistry

    what will happen when you drop a ball of naphthalene in a 25ml gasoline.will it dissolve or not?
  33. Chemistry

    advantages and disadvantages of municipal waste instead fuel Cannot come up with an answer for this one having trouble please someone help!
  34. Chemistry

    How many grams of CH3COOH are present in 2.5^3 of vinegar. Also, what is the formula needed to solve? Thanks!
  35. Chemistry

    Net Ionic Equation for reaction between bromide and silver nitrate
  36. Chemistry

    Zn + 2HCl = ZnCl2 + H2 Which amount would produce more H2: 17gramsZn OR 150 mL of 0.5HCl?
  37. chemistry

    Vapor pressure ___________ as the temperature of the liquid in equilibrium with it increases.
  38. chemistry

    If 80g KNO(3) is mixed with 100g water at 30 degrees C how much will not dissolve?
  39. Chemistry 1115

    How do you calculate the molarities of HC2H3O2 and NaC2H3O2 in a buffer solution?
  40. Chemistry

    How do you find the mass of iron in audio tapes per metre of tape?
  41. Chemistry

    In respect to covalent bonding, what does it mean if there's an unshared or lone pair of electrons?
  42. chemistry

    Mg(OH)2 + 2HCl = MgCl2 + 2H2O if 33.5g of Mg(OH)2 react, what mass of H2O could be produced
  43. chemistry

    I am wondering why H2S has only London Dispersion forces and not Hydrogen Bonding?
  44. chemistry

    Considering a 1.0M of each solution, which has the greatest osmolarity? 1. FeCl3 2. K2O 3. HCl 4. HC2H3O2
  45. Chemistry

    What is the name of the following compounds; Hg2(BrO2)2 Au(OCN)3 AuSCN Ni3(AsO4)2 Thank you
  46. Chemistry

    What is the average mean of the following data set: 2, 8, 6, 4, 2, 4, 5 (round your answer to 2 decimal points)?
  47. Chemistry

    The molecular structure around the oxygen in water is _________ I don't know what to put
  48. Chemistry

    The molecular structure around all the carbons in ethanol is ________ I don't know what to put
  49. chemistry

    how are the absolute temperature and volume of a gas at constant pressure related?
  50. chemistry

    Identify the element that has a ground state electronic configuration of [Ar]4s23d104p 4
  51. chemistry

    What is (a)PH(b) POH of a solution wholes hydrogen ion consentration is 5.00x10-4?
  52. chemistry

    Report the preparation of stock solution of 0.04M of sulphoric acid
  53. chemistry

    Explain the observed temperature change upon mixing ethanol and cyclohexane.
  54. Chemistry

    Calculate the pH of a 0.10 M NaHX salt solution. Ka (H2X) = 2.1 x 10-2 Ka (HX-) = 4.5 x 10-8 Can someone explain the steps to do this please?
  55. Chemistry

    What is the volume in liters occupied by 37.7 moles of CO2 at 9.54 atm and 55 degrees?
  56. chemistry

    A radio broadcasts at 101.3 Megahertz. What is the wavelength of the signal in meters?
  57. Chemistry

    Convert 4.39 × 10-3 m to the equivalent length in nanometers. please explain how to do it I have no idea where to start! Thank You
  58. Chemistry

    Which liquid is more viscous at room temperature water or molasses? explain
  59. chemistry

    blance this equestion with partial balincing method:- Zn+HNo3(very dil)
  60. Chemistry

    How is the temperature change in an alcohol related to how storng the intermolecular forces are?
  61. chemistry

    True or False CH4 probably has a lower boiling point than SnH4
  62. Chemistry-help-thanks

    Ethanol is an organic solvent. In general, will it dissolve ionic compounds?
  63. chemistry

    How many kilograms of H2O must be added to 76.0 g of Ca(NO3)2 to form a 0.509 m solution?
  64. lab chemistry

    what is the boiling point of 2-propanol at the top of pike's peak
  65. CHEMISTRY

    WHAT IS THE COST PER KJ TO PRODUCE METHANOL, ETHANOL, PARIFFIN, PROPANOL,AND BUTANOL?
  66. chemistry

    What is the relationship between the temperature, speed, and kinetic energy of gas molecules
  67. chemistry

    How do gases compare with liquids and solids in terms of the distance between their particles
  68. chemistry

    how many milligrams of PbI2 can you dissolve in 300 mL of water at 25 degrees celcius
  69. chemistry

    write a balanced equation for the reaction of aluminum with platinum and chloride.
  70. chemistry

    balance H2SO4 + NaOH --> H2O + Na2SO4 so i know you need 2 Na on each side but then I cant figure out the #'s for O or H
  71. Chemistry

    What are some of the distinctive properties of gases with respect to: density, volume, shape?
  72. chemistry

    how many atoms of oxygen are contained in 0.662 mol of magnesium carbonate?
  73. Chemistry

    What is the mass, in grams, of a pure gold cube that has a volume of 3.00 cm3?
  74. chemistry

    Calculate the number of moles of O atoms in a 2.5x10(-6)kg sample of C8H10N4O2
  75. chemistry

    report on the preparation of 0.004M stock solution of ethanoic acid
  76. chemistry

    explain why some numerical values have an unlimited number of significant digits
  77. chemistry

    How do you write a conversion factor relating cubic centimeters and milliliters?
  78. chemistry

    what element is undergoing oxidation in the following reaction Zn(s)+AgNO3(aq) Zn(NO3)2(aq)+2Ag(s)
  79. chemistry

    what is the limiting reagent in a reaction between copper sulfate and barium nitrate?
  80. chemistry

    what element is undergoing oxidation in the following reaction Zn(s)+AgNO3(aq) Zn(NO3)2(aq)+2Ag(s)
  81. chemistry

    1) A 3-fold degenrate subshell can carry a maximum number of how many electrons?
  82. chemistry

    calculate the freezing point of 0.1m of a)NaCl (b) glacial acetic acid
  83. chemistry

    why would it be undesirable to wash the crude halide with aqueous sodium hydroxide
  84. Chemistry

    7.8 g of calcium fluoride is dissolved in 100 L of water at 25°C. Will a precipitate be formed?
  85. AP Chemistry

    Under what circumstances is the enthalpy of formation of a compound from its elements usually: - positive - negative
  86. CHEMISTRY

    Arrange the following ions in order of increasing size: Br- Ca2+ K+ Se2-
  87. AP Chemistry

    Which of the following sets of quantum numbers are allowed for an electron in a hydrogen atom? a)n=3, l=0, ml=0 b)n=4,l=1,ml=-1 c)n=2,l=1,ml=-2
  88. Chemistry

    What is the name for the following coordination compound or ion? Na3[Cr (NH3) NO2 Cl3]
  89. chemistry

    How can I change ca(hco3)2+cl(aq)=cacl2(aq) + co2(g) + h2O in to ironic equation?
  90. Chemistry

    explain how the celsius scale was devised and why it is not appropriate to use it when describing the behavior of gases
  91. Chemistry

    How many calories of heat are needed to raise 10 g water from 20 to 21 degree celcius
  92. chemistry

    what volume of HCl gas is needed to neutralise 50 ml of 0.1M NaOH at stp?
  93. Chemistry

    What is the balanced equation for the reaction of acetylsalicylic acid and sodium hydroxide?
  94. Chemistry

    Calculate the mass of sodium,which contains same no.of atoms as are present in 4gm of calcium
  95. chemistry

    Approximately what electronegativity difference would you expect for a polar covalent bond?
  96. Chemistry

    The molar solubility of a generic substance, Mg(OH)2 ksp = (1.2x10^-11) in 0.10 M NH3 Kb = 1.8 x 10^-5 help me please =)
  97. chemistry

    How many grams of solid KOH are needed to prepare 100.mL of a 1.7 M solution?
  98. Chemistry

    Calculate the boiling temperature of a 0.50 M solution of sucrose. Assume that the concentration is 0.50 m.
  99. chemistry

    0.717g of potassium dihydrogen phosphate in 500ml concentration in ppm
  100. Chemistry

    A brownie contains 1.30 ×102 mg of sodium. What is this mass equivalent to it in units of grams?
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