It’s true !!!!!!!!!!!!!!!! N
The decay of a radioactive isotope can be predicted using the formula: A = Ao[2^(-t/T_0.5)] where A is the amount after time t, Ao is the original amount and T_0.5 is the half-life. Using the equation and the given values, 0.888 g of the sample will remain after 72 minutes.
This doesn’t have a multiple choice part to answer.
B the atomic number is 20 and then you subtract atomic mass to find the neutrons
11. I would say physical because the color of the item is changed and the texture and density is changed aswell.
