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This is because in liquid state water molecules are close to each other, but in an disorganised manner. Each water molecule forms around 3.4 hydrogen bonds with other water molecules. 

However, in ...

First identify that integration by parts is required. Then seperate the integration so u = ln(x)     dv/dx = x then, du/dx = 1/x  v = (1/2)x^2 . And using the integration by parts formula with these subst...

All classes of vertebrates have their own distinguishing features that we can use to identify if an animal is indeed a mammal or not. The main classes of vertebrates can be simpified into mammals, fish, a...

Fat is first processed by mechanical breakdown in the mouth through chewing and in the stomach through its ‘churning’ action. Lipase, an enzyme produced in the pancreas, converts fat in the small intestin...

(1) Oxygen is transported around the body in red blood cells. In the red blood cell it is bound to a protein called haemoglobin. Oxygen dissociation curves show the relationship between oxygen levels (as ...