Recent content by ashleyreece

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    How to write acid/base equations ?

    Write an equation to explain the observed acidity or basicity of each solution. 1. Na2CO3 = Sodium Carbonate 2. Na2SO4 = Sodium Sulfate 3. CH3COOH = Acetic Acid 4. NH4Cl = Ammonium Chloride 5. NaH2PO4 = Sodium Hydrogen Phosphate 6. NaNO3 = Sodium Nitrate 7. NaHSO4 = Sodium Hydrogen Sulfate 8...
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    How do I write equations to explain acidity or basicity?

    Write an equation to explain the observed acidity or basicity of each solution. 1. Na2CO3 = Sodium Carbonate 2. Na2SO4 = Sodium Sulfate 3. CH3COOH = Acetic Acid 4. NH4Cl = Ammonium Chloride 5. NaH2PO4 = Sodium Hydrogen Phosphate 6. NaNO3 = Sodium Nitrate 7. NaHSO4 = Sodium Hydrogen Sulfate 8...
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    If Sr(NO3)2 was tested with the sodium salts, what results would you expect?

    Please show all working. Any help would be appreciated, thanks in advance. =]
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    Year 11 chemistry questions relating to the compound water?

    1. It is generally believed that water freezes at zero degrees Celsius because ice melts at 0 degrees Celsius? Is that true? But I remember reading somewhere that water that is carefully cooled can remain in its liquid state at a temperature as low as minus 40 degrees Celsius.How does this...
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    Help with biology questions?

    1. Plasma is an example of A intracellular fluid. B extracellular fluid. C lymph. D interstitial fluid. 2. Open circulatory systems A are characteristic of mammals. B do not have a muscular pump. C have low pressure. D have specialised transporting fluid and vessels. 3. All arteries A have...
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    help with year 11 biology questions?

    1. a What is the function of myoglobin? b Why must there be a higher concentration of oxygen in tissues in haemoglobin that myoblobin? 2. Explain the likely effect of high altitude on oxygen exchange in air breathing animals. 3.The number and size of leaf stomata vary according to the plant...
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