While examining layers of rock, a geologist states, "The sandstone is older than the limestone." What has the geologist determined?
the absolute ages of the rock layers
the relative ages of the rock layers
the half-lives of elements within the rock layers
O the specific-lives of elements within the rock layers

These traits describe either a chemical or a nuclear reaction. which statements describe a nuclear reaction? check all that apply. involves the loss, gain, or sharing of electrons may involve a change in total mass involve relatively low energy changes occur outside the nucleus involve very high-energy changes involve changes in nuclides when decay occurs

Determine the total number of atoms in 1.0 mol of co2

Asap at one point in history people could measure temperature by looking at the volume of a sample of gas. suppose a sample in a gas thermometer has a volume of 135ml at 11.0°c. indicate what temperature would correspond to each of the following volumes: 113 ml, and 155 ml.