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There are three things to consider every single time relative reactivity is unknown: atomic radius, shielding, and number of electrons. The reactivity is the halogens ability ...
An indirect question is a question which has been previously asked and is now being reported. An example of this in english is: The teacher asked whether the students had done their homework. The original...
The main bonding in DNA which renders the double helix structure so stable is that of hydrogen bonds. Between the complementary base pairs, hydrogen bonds connect the two strands of the helix. There are 3...
Rearranging is one of the trickier topics in GCSE maths, however as long as you follow it through step by step you shouldn't have a problem.
The question asks you to make 'c' the subject....
This question can be difficult, because it involve a lot of words. This can make it confusing as to what information we really need to use - just work it through step by step.
Sam uses 14...
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