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Acids, by definition, are proton donors, so will donate a H+ ion to a base. Examples of acids may be HCl or ethanoic/acetic acid (a.k.a. vinegar).
Base...
Using the knowledge of a2 = b2 + c2 - 2bcCos(A)
Rearrange to aquire Cos(A) = (b2 + c2 - a2)/2bc
Then input ...
d/dx(4x3 + 2x) = d/dx (4x3) + d/dx(2x)
= 4(3x2) + x
= 12x2 + x
Any chemical that dissociates to give an H+ ion is classified as an acid. There are stong and weak acids but at GCSE you only need to know some key reactions which apply to both weak and st...
All three are types of aural imagery which is probably the most prominent type of imagery as it is easily identified by reading out the text. It is spread into many sections.
1) Allitera...
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