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April 20, 2014

April 20, 2014

Posted by **jim** on Wednesday, April 28, 2010 at 2:58pm.

A)28 Al 13

B)30 Al 13

C)32 S 16

D)32 P 15

E)33 P 15

- Chemistry -
**DrBob222**, Wednesday, April 28, 2010 at 3:13pmWritten this way, 15P^32 means 15 atomic number (which is phosphorus) and ^32 means mass number.

15P^32 ==> -1e^0 + X

The subscripts must add up on both sides as does the mass number; therefore, X will be 16X^32. What is 16X^32.

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