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Recent content by Alex10
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Chemistry Paper 51
If solubility increases with temperature doesn't it mean the forward reaction is endothermic? So delta H would be positive? -
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Chemistry p41: How'd it go peeps?
Wouldn't it be less compact because there are more branching points? -
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Chemistry and Biology P4 guesses?
Calculate the number of moles of acid left, so 0.0025-0.001 = 0.0015 (due to 1:1 mole ratio) and find its concentration by 0.0015/0.002 which gives 0.075 moldm^-3. One mole of NaOH reacts to form one mole of sodium ethanoate, so the concentration of the salt is 0.001/0.002 = 0.05 moldm^-3... -
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Biology P5 - Tips on Electrophoresis and Chromatography anyone?
Electrophoresis: make sure to include a buffer soluation in your agarose gel plate and that the samples are near the cathode. The sequence of fragments from the ANODE to cathode is shortest to longest. Standardise the pH of the buffer, the voltage applied and the time. Chromatography: Include... -
Chemistry p32
Use C1 x V1 = C2 x V2 So for experiment 1: 0.23 x 50 = C2 x 130 -
How was biology p32 (no discussion)
What stages of mitosis did you guys label in Fig. 2.1? -
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biology practical
Paper 32 will probably involve investigating the effect of something on the activity of an enzyme that coagulates milk. -
AS Psychology- Doubts, Tips, Guesses and Leaks
I'm just going over the studies again, making sure I know the exact procedures and data collection methods etc. Then I will look at all the issues of ethnocentrism, generalisations, ethics and all that and memorise points about the advantages and problems psychologists have when using these.