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This question may seem difficult but we just have to remember the rules of parametric differentiation and the chain rule.The chain rules states that dy/dx=dy/dz*dz/dx where z is a third variable. Pa...
When it comes to answering questions about inequalities, it is important to remember the signs and what they represent. In this instance, we need to find a range of solutions where 2(3x+1) is grea...
These kinds of questions often come up in GCSE papers and involve algebraic manipulation. The key to answering these questions is finding a common factor in the numerator and denominator that can be cance...
Buffer solution is a system that minimises the change in pH when a small amount of acid or base is added. There are two types of buffer solutions- alkaline buffer solution and acidic buffer solution. The ...
First, look at the Periodic Table. Potassium is in group 1 so has a +1 charge, Li+Sulphates always have a -2 charge, SO4 2-Now combine two ions together so we can ge...
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