"Molar mass by freezing point depression lab answers" Essays and Research Papers

Sort By:
Satisfactory Essays
Good Essays
Better Essays
Powerful Essays
Best Essays
Page 3 of 50 - About 500 Essays
  • Powerful Essays

    blue color starts to fade After heating it is completely white – color has faded – and particles are smaller due to the stirring Calculations of Trial 1: Molar Mass of H2O = 2 x (1.01) + 16.00 = 18.02gmol1- How many moles of H2O evaporated Trial 1: 0.72g±0.04g/18.02gmol1- = 0.03995… ≈ 0.040mol±6.25% = 0.040mol±0.003mol Molar Mass of CuSO4 Cu: 63.55 gmol1- S=32.07 gmol1- O x 4= (16.00) x 4=64.00 gmol1- CuSO4= 159.62 gmol1- Moles of anhydrous part (CuSO4) 1.35g±0.02g/159.62 gmol1-=0

    Premium Gender Mole

    • 638 Words
    • 3 Pages
    Powerful Essays
  • Good Essays

    Freezing Point of Naphthalene I. Purpose To determine the freezing point of a known substance‚ naphthalene II. Materials ringstand gas source test tube test tube clamps thermometer naphthalene Bunsen burner goggles hose stopwatch III. Procedure 1. Assemble the Bunsen burner‚ attaching one end of the hose to the burner and the other to a gas source. 2. Assemble the ring stand so that a ring clamp is attached to the stand holding the test

    Premium Temperature Gas Fahrenheit

    • 612 Words
    • 3 Pages
    Good Essays
  • Powerful Essays

    Title Freezing and Melting Point Objectives 1. To gain proficiency in constructing a graph and plotting data points. 2. To determine the freezing points of a compound from the graph of decreasing temperature versus time. 3. To determine the melting points of a known and unknown compound. Introduction Physical changes are the changes in the physical properties of a substance (Moore‚ Stanitski & Jurs‚ 2009). Freezing point is the fixed temperature at which a pure liquid converted into crystalline

    Premium Melting point Liquid Chemistry

    • 1331 Words
    • 6 Pages
    Powerful Essays
  • Good Essays

    Molar Mass of Butane

    • 789 Words
    • 4 Pages

    Jennifer Jiang Dr. Iobst Chemistry I Honors 11 March 2013 Molar Mass of Butane: Applying the Gas Laws 1. Water bath temperature: 17.7° C or 291 K Celsius to Kelvin temperature conversion: 17.7° C + 273 = 290.7 Kelvin (rounded to SF= 291 K) 2. 1 atm 1 atm 10 mm 10 mm 2.54 cm 2.54 cm According to the digital barometer our teacher provided‚ the barometric pressure in the lab is 29.77 in Hg‚ which will need to be converted to atmospheric pressure. 760 mm Hg 760 mm Hg 1 cm

    Premium Pressure Gas Ideal gas law

    • 789 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Purpose: The purpose of this lab was to determine the freezing point of pure water‚ the experimental van’t Hoff factor for a substance and the molar mass of an unknown solution. Reagents: 25mL deionized Water ¼ to ½ inches of rock salt 25mL Sodium Nitrate (NaNO3 ) 25mL unknown solution – handle unknown solution carefully Procedure: For part 1‚ the freezing point of deionized water was determined. An ice bath was prepared by filling a 600mL beaker ¾ full of ice and covered with ¼ to

    Premium Concentration Chemistry Water

    • 953 Words
    • 4 Pages
    Good Essays
  • Good Essays

    Freezing Point Depression of Aqueous Solutions Abstract: The purpose of this lab was to find the freezing point depression of 0.5M aqueous solution NaCl‚ distilled water‚ 0.5M aqueous solution of CaCl2‚ and unknown solution A. However‚ the teacher gave us values to do our experiment. Introduction: The objective of this lab is to understand how a solute depresses the freezing point of a solvent; also to comprehend the process of super cooling and to measure the freezing point of solutions

    Premium

    • 380 Words
    • 2 Pages
    Good Essays
  • Powerful Essays

    Molar Mass of Butane

    • 794 Words
    • 4 Pages

    Chemistry 1110 Molar Mass of Butane Materials * Butane Lighter * Plastic Tube * 100 ml Graduated Cylinder * 2 Thermometers * Barometer * Sink Full of Water Purpose The purpose of this experiment is to determine the molar mass of butane using Dalton’s Law of Partial Pressures and the ideal gas law. Hypothesis My hypothesis is that as we complete the experiment‚ we will be able to correctly use the air and water temperatures‚ volume of gas‚ and barometric

    Premium Pressure Gas

    • 794 Words
    • 4 Pages
    Powerful Essays
  • Better Essays

    Molar Mass Of Na2co3

    • 1774 Words
    • 8 Pages

    the making of the solution. Using the volume and concentration of the solution‚ I was able to calculate the moles of the solution (concentration x volume). Using the periodic table I was able to calculate the molar mass of sodium carbonate which was 106‚ from this I could calculate the mass of the sodium carbonate I needed to make the solution (moles x Mr). After making the solution I cleaned the apparatus

    Premium Chemistry Chlorine Carbon dioxide

    • 1774 Words
    • 8 Pages
    Better Essays
  • Good Essays

    Freezing Melting Lab

    • 838 Words
    • 4 Pages

    Freezing and Melting of Water. 10/24 Richard Landolfi Due Date:11/1 Purpose the purpose of this lab is to determine the freezing and melting temperature of water. Freezing temperature‚ the temperature at which a substance turns from a liquid to a solid‚ and melting temperature‚ the temperature at which a substance turns from a solid to a liquid. Hypothesis If the water is at a low temperature then it will freeze

    Free Solid Liquid Melting point

    • 838 Words
    • 4 Pages
    Good Essays
  • Good Essays

    molar mass ap chem

    • 1051 Words
    • 6 Pages

    December 12‚ 2014 Determination of the Molar Mass of Volatile Liquids Theory: Molar masses‚ can be seen and used daily in chemistry. In this lab‚ the ideal gas law helps determine and evaluate the molar mass of gases and volatile liquids. The ideal gas law compares four properties of a gas which include pressure‚ volume‚ moles‚ and temperature. During this experiment‚ the moles would be unknown‚ in effect the student must use a substance mass divided by its molar mass. With this‚ the ideal gas law can

    Premium Gas Water Ethanol

    • 1051 Words
    • 6 Pages
    Good Essays
Page 1 2 3 4 5 6 7 8 9 50