Recent content by xXAznGurlXx

So what do you suggest I should do into calculating the mass?

There were no chemicals involved, it's just those 2 solutions and when they react, it turned from blue to pinkish colour. I mixed the orange juice with the DCPIP and then it changed colour.

well I had a test tube and inside was 1cm3 of DCIPIP and my burette contained orange juice and had to slowly add drop by drop to the dcipip until it change colour. I have to repeat the exact same procedure with grapefruit juice, blackcurrent juice, and a wide range of juices.

Hello there, I just needed help on this following problem, its a biology coursework i am doing and it states that, The 1% vitamin C Solution contains 1mg of vitamin c in 1.0cm3. Calculate the mass of vitamin c that is required to decolourise 1cm3 of the DCPIP solution. then use this value to...

You are required to plan an investigation to find out the rate of glucose uptake by yeast cells varies with glucose concentration material resources - 10% glucose solution - disilled water -yeast suspension - Benedicts reagent I have done the introduction, apparatus required, but I am...

I think you use Zinc to reduce it to Fe2+ in order to find out the end point from that, once you titrated completely.But I am not so sure :/ My lecturer told me to look up on that reaction on how to reduce it, so i should think it is that

Yes that's right, well firstly I am trying to work out how much iron is present altogether and how much of it is Iron II on my task sheet all it says: You have to devise a volumetric procedure to determine the percentage of iron II and Iron III in a mixture containing both. You are provided...

determine the % of iron II and iron III in a mixture containing both, where i am given 200cm3 of a solution containing 1.3g of iron ions(Fe 2+ Fe 3+) using potassium magnanete. I wrote down the equation already, and method, but i don't know how to work out the % from it :/ Can you please help...