The mass of a radioisotope falls from 2g to 0.25g in 3 hours. What is the half-life of this radioisotope?

Predict the relative bond lengths of the three carbon-oxygen bonds in the carbonate ion (co2−3). what would you expect the charge to be on each oxygen? match the words in the left column to the appropriate blanks in the sentences on the right. make certain each sentence is complete before submitting your answer.