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    Urgent! About CAD

    Do unemployment and inflation affect the size of CAD?? also.. what are the possible reasons for an increase of CAD?? thx~~
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    Urgent! About CAD

    Do unemployment and inflation affect the size of CAD??
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    Blunt investment???

    anyone can tell me what is blunt investment??thx~
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    About CAD

    can anyone tell me the main structural cause of the CAD?? and explain the impact of foreign investment on the Asutralian economy? thx~
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    novel----"The only the Heart"

    novel----"Only the Heart" anyone read this novel?? can anyone send me the summary of this novel and the journey of the character-Toan??
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    identify the samples

    1)i 've got solid sample of zinc nitrate, barium chloride, calcium carbonate and sodium carbonate. given that bottles of distilled water, hydrochloric acid an lime water. how do i know which sample is which?? 2) can anyone describe what is meant by an absorption spectrum for me pls...
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    calculating energy

    1) Given that the production of one mole of ammonia releases 46KJ of energy, determine the maximum amount of energy that could be released when 2.5 moles of nitrogen gas and 6 moles of hydrogen gas are hearted together. * anyone can teach me how to do this Q? what should i do first...
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    question about monitoring and ammonia

    1. describe why it isnecessary to monitor levels of pollutants in our atmosphere 2.what reaction conditions must be met for dynamic equilibrium to be established? 3. describe why a moderate temperature is chosen for the production of ammonia 4.explain why the monitoringofhte reaction...
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    buffer system

    1) balanced chemical equations demonstrating the action of the buffer system against the addition of acidic species and basic species 2) the approximate pH at which the system is maintained
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    carboxylic acids

    1)how many barboxylic acid exist, which satisfy the overall formula C5 H10 O2 ? name all such compounds 2) ken was baking muffins for his lunch at school. he misread the label on the recipe and added too much baking soda. when he removed his blueberry muffins from the oven, his muffins had...
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    questions...

    1) a solution of hydrochloric acid was chown to have a pH of approximately 1.2 but the accurate concentration was not know. Addition of 100mL of silver nitrate solution to 100mL of hte hydrochloric acid produced a white precipitate of silver chloride with a dried weight of 0.861 g. a)...
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    Quadratic and the parabola

    1) the parabola y=ax^2 + bx + c has its vertex at (2, 1) and passes through the point (0 ,0). find a, b and c. 2) x^2 + 10x - 17 = P( x - 2)^2 + Q(2x - 3) + R i have found P=1, Q=7 and R=2 Now how do i express x^2 + 10x - 17 in the form P( x - 2)^2 + Q(2x - 3) + R ??
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    Reflux

    1) what are the advantages of refluxing? 2) a compound consists of carbon, oxygen and hydrogen only. the percentage composition by mass of these elelments in the compund is: C ( 54.5%), H (9.2%), O ( 36.3%) a) Determind the empirical formula of the compound b) if the molecular weight...
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    i can't do this...

    Q1. arrange the following gas mixtures in order of their tendency for CO2(g) to dissolve in aqueous solution ( percentages given are mole %) 1) 90% Ar, 10% CO2 2) 80% Ar, 10% CO2, 10% NH3 3) 80% Ar, 10% CO2, 10% Cl2 Write equaions for any chemical reactions occurring in aqueous solution on...
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    Le Chatelier's Principle and equilibrium

    Q1.Arrange the following aqueous systems in order of their ability to dissolve CO2. Assume that, prior to exposure to 10% CO2 in Ar, they have been allowed to equilibrate with air: 1) distilled water 2) 1 M HCl solution 3) 1 M sodium hydroxide solution Q2 Explain why we can dissolbe more...
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    anyone can help......?

    Outline an experimental method for determing the acid content in aspirin ( acetylsalicylic acid) given that it is a monoprotic acid anyone can do this Q ??
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    Homework Question.....

    it is desired to determine the concentration of hydrochloric acid in a brick-cleaning solution. samples(each25mL) of the acid solution are to be titrated with a standard sodium carbonatesolution. 1) describe how to prepare 500mLof 0.500 mol L solution of sodium carbonate from pure dosium...
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