A sample of Ne at 550 torr and 25°C is placed in an evacuated 5.0 L flask. The gas sample is heated to 200°C. Assuming that the volume of the flask does not change, what is the pressure of the gas inside the flask at the higher temperature?

Q: What is amphoteric compound? Can you give me an example of amphoteric compound?

A: Amphoteric mean behave like both acid and base.  ---------------------------------------

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A: Ether are formed by acid catalyzed coupling of two alcohols.

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Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.