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its boring!

that exam was a LOT harder than i thought it would be. couldnt do the car going up the hill. anything on telecommunications was hard becuase for that whole topic out teacher just made us read sheets because we only has like 3 weeks to do it. i got 70% in trials but i reckon 60% in that one. i...

Is atomic absorption spectrometry (AAS) destructive or non-destructive?

Thanks, i guess it must be right then.

I have to determine the speed of a motor using PE=mgh and KE= ½mv^2. The motor is being used to lift a 20g mass 25cm into the air. Im not really sure how to do this, but this is how I did it: PE = 0.02 x 9.8 x 0.25 = 0.049 J KE = PE Therefore KE = 0.049 J 0.049 = ½ x 0.02 x v^2...

While we are talking about this prac, i have 2 discussion quesions that i am struggling with: 1) "Write a balanced chemical equation that would show how CO2 estabilishes equilibrium with water." 2) "In terms of Le Chatelier's Principle, explain how the reaction with sodium hydroxide can...

I have a question from the same prac-“Like HCl and H2SO4, water also contains the element hydrogen. How do you know that water is not an acid?”

That was really helpfull im pretty sure i understand it now. Thanks for the help.

Sorry this will sound dumb but we hav been doing this for the last 5 weeks and i still dont know what CAD and financial and capital account are. So in simple terms current account is money flowing in and out and financial and capital account is the goods and services???? ARGH SO CONFUSED!!!

Thanks for the help guys that has been really usefull

In our prac we just chopped up a beetroot and blended it in a belnder with some water.

Hi, I need help on the following questions in my maths assignment: 1) The elevation to the top of a high rise building at a place X due west of it is 78º and at a place Y due south of X the elevation is 58º. If the distance from X to Y is 200 metres find the height of the building.<O:p...

Oh so its a cubic then. Thanks for your help.

Hi, i need som help solving the following equation: "(x<SUP>2</SUP>-4)/(x-1) is greater than 0" Do I multiply the x-1 across to make (x<SUP>2</SUP>-4) greater than x-1 ?? I tried this and made the quadratic equation x<SUP>2</SUP>-x-3 greater than 0 but I cant factorise this. What am i doing...

Im doing a prac: "Beetroot: a natural indicator" and need to know "at what pH range does beetroot indicator change colour?". Thanks.

In any prac you can always say in your discussion that your results would be more accurate if the investigation was repeated numerous times to achieve more realistic results. In your conclusion make sure you refer to your aim and answer the aim if it is in the form of a question.