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A radioactive compound with mass 320 grams decays at a rate of 27% per hour. Which equation represents how many grams of the compound will remain after 4 hours?

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A radioactive compound with mass 320 grams decays at a rate of 27 per hour Which equation represents how many grams of the compound will remain after 4 hours Wh class=

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Answer:

Step-by-step explanation:

if 27 %  ( which is 0.27 in decimal) decays.....then   (1 -0.27 ) remains

   after each half-life ....4 hours is   4 half lives

   so

320 ( 1- 0.27)^4   would remain

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