MCAT Question of the Day
    •

    Q:

    		 An unknown substance was shown to have a half-life of 5.0 seconds. If you observe 12.5 g of the substance after 15.0 seconds, how much of the substance was there initially?
    		 

    A

    		 12.5 g

    B

    		 25.0 g

    C

    		 50.0 g

    D

    		 100 g



    Nuclear Chemistry | Quantitative Skills |
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