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Does anyone have information on the chemical properties of Technetium-99 (for medical) and Cobalt-60 (for sterilisation)? Thanks

OK, thanks

are there any examples of acids and bases reacting in non aqueous systems?

Hi everyone What does it mean when it says that the B-L definition of acids is not limited to aqueous systems?

does anyone know where i could find (or does anyone have) practice questions on pedigrees or mendelian crosses? Thanks

I learnt that when a plant doesn't have enough light it grows tall and thin to try and reach light. (because in nature usually if plants grow higher they can reach the light not like in the expmt where you made sure it couldn'tget light. I havent heard about photoperiodism but i learnt that when...

Does anyone know what a prac exam for blueprint of life or search for a better health could be??? Thanks

i see, thanks

how do you differentiate y=tan-1(1/x) and y=1/(sin-1x) thanks

can someone explain how a passivating layer works? Thanks

Does anyone have any quotes from 50th Gate that show how there can be different perpectives on the same event?

OK, thanks

Whats the answer to this multiple choice question Why is waste removal essential for metabolic activity to continue? a) Waste products prevent the entry of essential nutrients into the cell b) metabolism of waste products produces chemicals that kill cells. c) waste products alter the...

Thanks

Does anyone know what is important about companion cells -what they do?

The higher the hydrogen ion conc. the more acidic it is. This means th ph will be lower. When carbon dioxied dissolves in water it forms carbonic acid, this realeses hydrogen ions lowering teh pH of the solution

The optimal temperature must be where it clots faster. If the enzyme was being denatured it would be slower to clot (ie not optimum). Are you sure you got the numbers right?

Has anyone got anything on Where the wild things are for imaginative journeys?

Positive feedback systems increase the effect of whatever is being monitored. ie if the thing being monitored increases the feedback mechanism increases it futher or if the thing being monitored decreased the feedback mechanism decreases it futher. Negative feedback systems are what help keep...

Does anyone understand why are dispersion forces greater when there are more electrons?