Physics help please!?

Posted on 2016-06-17 18:33:00 in Physics by SELINA

While studying a radioactive phosphorus,34/15 P , it was discovered that a 128 g sample had decayed to 4.48 g after 60 s. 
The following table provides data corresponding to the decay. (10.00 marks) 

a) Graph the data with the manipulated variable on the horizontal axis. Provide a suitable title for your graph. 
b) Using your graph, or some other appropriate method, determine the half-life of this substance. Indicate how you 
determined your answer. 
c) Write the decay equation for the decay of 34-phosphorous, identifying the product isotope.

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