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Need help here! Assess the effectiveness of identifying anions and cations through precipitation reaction. Thanks in advanced! :)

Ohhh that just makes it so much easier to answer these questions. Thanks a lot! However I don't know if that would be enough to gain 4marks for a, and 3marks for b

I'm having trouble answering these questions... Please help a) identify data sources and evaluate the validity of the secondary info in relation to your chosen non-infectious disease b) assess the reliability of your secondary info and the data that you have obtained in the relation to...

Need help with a question... a) draw a graph (don't need help with this...) b) compare the death rate for smokers and non-smokers in each category. On the basis of the data in figure, what conclusions can be drawn about the effect of smoking in: i) smokers and non-smokers of...

I don't know how to do this question, please tell me what to do Plutonium has a half life of 2.4 x 10^4 years. How long would we need to store a sample of plutonium for its activity to drop to less that 0.1% of its original value? Thanks in advance! :)

I need help with these questions 1) find values of m such that mx^2 + 3x -4 <0 for all x 2) solve 5^2x - 26.5^x +25=0 Thanks in advance

Ohh makes sense, thanks :)

I prepared an ester with 1-pentanol and ethanoic acid. So I have this question... I know excess acid was added but "why was an excess of that reagent used rather than an excess of the other one? (Densities of 1-pentanol and glacial acid are 0.81 and 1.04g/ml respectively)" What has the density...

I don't really know which changes, it was a question from a textbook... Maybe it's the change in structure

I need to know, "how changing a monomer affects the properties of the polymer produced" Thanks in advance :)

Yeah I know how to do that... Need part b

I need help with this question: In an experiment, a student added 20.00ml of 0.09mol/L of nitric acid to 25.00ml of 0.11mol/L potassium hydroxide. a) determine which substance is in excess b) calculate the vol of 0.1mol/L KOH or HNO3 needed to neutralize the remaining solution I can do...

I need to know how the following compounds can be prepared: a) 2-butanol b) 2,3-dichloropentane c) 3-bromohexane Thanks in advance :)

Ok thanks

I haven't gone into much detail for blade runner in school yet... But I can think of some similarities between the two. For example: they're both about creating life through science, however one is set in the future and the other in the past, and the created being both pursue their creator to...

I need to create a visual representation, for Frankenstein and Blade Runner, of the elective Text in Time (comparing the treatment of similar content in a pair of texts composed in different times and contexts may reflect changing values and perspectives). I have to provide and oral presentation...

I need help with this question... I can't seem to get it right :( Two roots of x^3+mx^2+15x-7=0 are equal and rational. Find m. Thanks in advance!

No it's just p(a) = p'(a) = 0

I already found part a and having trouble with part b of this question, please help. a) the polynomial equation p(x)=0 has a triple root at x=a. By writing p(x)=(x-a)^3.Q(x), show that p(a)=p'(a)=0. b) hence find values of u and v if x^5 -9x^4 +ux^3 -18x^2 +v +27 =0 has a triple root at x=3...

Thanks it's really helped :)