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How do I work out what the ionic charge is for different elements in the periodic table?

The useful thing is that different elements have been grouped together on the periodic table so that it's easy to see which ones share something in common. Group 1 elements become 1+, Group 2 becomes 2+, ...

JL
Answered by Jasmine L. Chemistry tutor
4776 Views

Why is the probability of inheriting Cystic Fibrosis 25% if both parents are only carriers? How did you get that figure?

(This would be after I have introduced the punnett square - I will draw this out for the student) Remember that each parent contributes one allele for a given gene to their offspring. For cystic fibrosis ...

JL
Answered by Jasmine L. Biology tutor
7874 Views

How can I support my answers in English Literature with evidence from the text?

In English Literature, to support a point you want to make about a novel or a poem, you need to provide evidence from the text that supports the claims or suggestions you are making about the text. You th...

PQ
8277 Views

Prove: (1-cos(2A))/sin(2A) = tan(A)

Firstly we must lay out our double angle formulas which are required for this question: cos(2A) = 1-2sin^2(A) = 2cos^2(A)-1 sin(2A) = 2sin(A)cos(A) Working from LHS: (1-cos(2A))/sin(2A) Focusing on the...

RP
Answered by Rishi P. Maths tutor
20786 Views

How should I structure my paragraphs when writing an essay in an exam?

To help yourself to write a clear and concise answer it can be helpful to follow the P.E.A/E.L structure when writing an essay in exams. P stands for the point you're making e.g. 'In Mary Shelly's Franken...

RW
4414 Views

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