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This is an example of completing the square. Notice that when we expand y = (x + a)^2 + b we get y = x^2 + 2ax + a^2 + b. By comparing coefficients (ie, making sure the number x is multiplied by and the c...

Fractional distillation is the technique to separate different components present in the crude oil on the basis of their boiling points. Crude oil is a mixture of many useful hydrocarbons and it is very i...

Enzyme are biological catalyst that speeds up the rate of the reaction without being used up. Enzymes speeds up the rate of chemical reaction by providing an alternative route to the reaction which loweri...

When thinking of pressure I like to think of two boxes joined together with the reactants in one and products in the other. When you make the boxes smaller (increase the pressure) the items in the box wit...

By using direct address, like a personal pronoun or an imperative, the writer creates the illusion of a relationship with the reader. This synthetic personalisation makes the author more likeable, and the...