A piece of wood from an Egyptian tomb has C-14 activity of 980 counts/hour. A piece of new wood of the same size has 3,920 counts/hour. What is the age, in years, of the wood from the tomb? The half-life of C-14 is 5,730 years.

Some familiar products contain some of the same types of atoms. for instance, the chemical formula for baking soda is nahco 3. the chemical formula for liquid bleach is naclo, and the chemical formula for table salt is nacl. which choice best describes why these three products have some of the same types of atoms in common?