Which isotope is appropriate for dating rocks that are billions of years old? oxygen-16

carbon-12

uranium-238

carbon-14

Why do consumers feel warmer after eating a meal

Mrs. smith ordered a root beer float (vanilla ice cream + root beer). mrs. smith noticed that the three states of matter (solid, liquid, and gas) all existed simultaneously in her root beer float. a. identify each phase of matter in the root beer float. b. describe the particles of all three phases of matter in the root beer float. (how are the particles arranged and moving? ) c. identify one phase change you would see in a root beer float and described what causes this change.

Consider the four elements above. which one of these elements will combine with oxygen in a 1: 1 ratio?