a rock that originally had a mass of 1.00g of uranium_238 now only has .125g left. how old is the rock if the half life of uranium_238 is 4.5 billion years?

Which process results in the release of energy stored in the products of photosynthesis? a. polymer synthesis b. depolymerization c. digestion d. cellular respiration

Which statement best describes the liquid state of matter? a. it has definite shape but indefinite volume. b. it has definite shape and definite volume. c. it has indefinite shape and indefinite volume. d. it has indefinite shape but definite volume.

What are the coefficients to balance the following equation? ba+br2=babr2