assignment

  1. C

    High spin vs low spin assignment for Vanadyl (acac)2 complex

    I have a question on VO2+ complex. I know that vanadium in VO2+ has +4 oxidation state and it has an unpaired electron in the d-orbital. Based on the notes, they have mentioned that for d4 onwards to d7 has 2 possibilities of arrangement of electrons i.e. high spin and low spin. However, for...
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    Chemistry Assignment Help

    Arsenic can be oxidized to arsenic (V) acid, H3AsO4. This acid oxidises I- ions to I2, which can be estimated by titration against a standard thiosulphate solution: As + 5HNO3  H3AsO4 + 5NO2 + H2O H3AsO4 + 2HI  H3AsO3 + I2 + H2O If 0.1058 g of a sample containing arsenic required 28.7...
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    Lab Assignment heat of fusion/vaporization

    Hi. I need help with a lab assignment. The assignment consisted of measuring the temperature change of ice to demonstrate phase changes. But the directions for calculating enthalpy don't make any sense at all. According to the lab assignment, to obtain the heat of fusion, I must divide time...
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    Help with ASSIGNMENT!!!

    The periodic table of the elements contains many trends. During this lab, you will locate data on the Internet and prepare a data table and graph in order to explain some of these trends. PROCEDURE: Use the Internet to locate data for the atomic radius for elements 1-56. Using graphing...
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    Final chem assignment due in on monday. Please check my answers

    Classify the chemicals in the list in compounds, ions, elements or mixtures. Write the molecular formulas of compounds, ions and elements. Suggest components of the mixtures. 1. Deionised Water 2. Carbon 3. Bronze 4. Milk 5. Chlorine 6. Ammonia 7. Sulphuric Acid 8. Sodium Nitrate 9. Bromine...
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    Help, this assignment has me stumped.

    Hi all, I came across this forum after looking for help or answers to the smaller questions I thought might solve the problem but haven't. The question/assignment I have been given says this: You will be provided with four solids labelled A, B, C and D. Your task is to design an experiment...