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The boiling point of the halogens increases as you go down the group. The halogens exist as diatomic molecules, with both atoms sharing an electron to completely fill the outer shell. The increase in boil...

Price elasticity of demand = change in demand / change in price change in price = 7.20 --> 8.48 = 17.78% increasechange in demand = 97 million --> 76 million kilos = 21.6% decrease therefore PED = -...

In biology catabolic reactions are biochemical reactions during which an organic molecule is broken down. This process is usually involved in the production of energy. In contrast, anabolic reactions are...

So "ser" and "estar" both mean "to be".Ser should be used when you're talking about an intrinsic quality of something eg. a description, the time, a characteristic of somethi...

In order to write a high quality essay question it needs to contain some key elements. To make a good impression to your examiner you need to start with a good but concise introduction to introduce some ...