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For the 2nd IE of Na an electron is being removed from the 2p subshell.For the 2nd IE of Mg an electron is being removed from the 3s subshell.It requires more energy to remove an electron from a lower ene...

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1.     Black technique was the oldest developed around 700 BC in Corinth, while red techniques was developed in Athens in late 6th century (530) until the 3rd century BC2.     Black figure style refer to ...

Anorexia Nervosa can be defined as an eating disorder characterised by weight loss, difficulty to maintain appropriate body weight, and the restriction of the types of food eaten. The DSM-IV states that i...

First we need to find a value for x in terms of y , this can be done by rearranging the second equation y - x = 3 to give x = y - 3. This equation is then substituted into the first equation so tha...