Determine if each items is a pure substance, a homogeneous mixture or a heterogeneous mixture.

Determine if each items is a pure substance, a homogeneous mixture or a heterogeneous mixture.

The half-life of thallium-201 and mg of a sample are given. Determine how man mg are LOST during x hours of decay.

A cloth found in Jerusalem shows x units of radiation. A living version should have x units. The half-life is also given. Is it possible for this cloth to come from this era? How old is the cloth?

The half-life of a radioactive sample is given (in hours). The sample decays from x micrograms to x micrograms. Determine how many hours this will take.

The mass of a radioactive sample decays from x micrograms to x micrograms in a given number of years. Determine the half-life.

The half-life of a radioactive nuclide is given (in hours). Determine the percentage lost after x minutes.

The half life (in days) of a substance is given. You begin with x mg of the substance. Determine how many mg remain after x days pass.

The half-life of carbon-14 is given. An artifact made of wood has a given ratio of 14C to 12C. How old is the artifact in years?

Otzi was found in a glacier. Carbon dating shows x units present at his time of death and x units remaining today. The half life of carbon-14 is also given. Determine how old Otzi is.