7. Being bored during the endless Wisconsin winter, you start digging in your back yard and discover a chunk of radioactive material. You had 400 g of the material when you found it, and discover you have 250 g left 8 days later. How many grams will you have left 20 days after you dug it up?I

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Writing and Balancing Nuclear Equations

A nuclear equation is a symbolic representation of a nuclear reaction using certain symbols. It is studied in nuclear chemistry and nuclear physics.