how many grams of nitrogen -16 will br left from a 16g sample after 21.6 seconds if its half life is 7.2 seconds

From Radioactivity

N/N° = (1/2)^t/t•

Where

N=Remaining Mass

N°=Initial Mass

t=Time of decay Or Time spent on decayingb

t•=Half life

N=N°(1/2)^t/t•

N=16(1/2)^21.6/7.2

N=16(1/2)³

N=16(1/8)

N=2g.

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answer; i believe that the correct answer is (light);

the cells uses some of the atoms of the glucose molecules to atp molecules. the atoms of the glucose molecules will then be converted into energy which will be eventually stored in atp. the energy produced which are stored in atp are coming from the glucose’s chemical bonds.