The half-life of tritium ( ) is 12 years. How long does it take for 16.0 ng of tritium to decay to the point where 2.0 ng remains?

What process is responsible for the formation of dew on the grass early in the morning?

A given mass of oxygen at room temperature occupies a volume of 500.0 mL at 1.50 atm pressure. What pressure must be applied to compress the gas to a volume of only 150.0 mL?

Unstable nuclei become more stable by spontaneously undergoing a change in their nucleus and emitting radiation. What is the term used to describe this process?

Which of the following statements conflicts with the kinetic molecular theory of gases?

What law predicts the expansion of a balloon when helium is added?

Which type of radiation emitted by radioactive nuclei is the slowest moving and least penetrating?

When a cold-pack is activated, a chemical reaction occurs and the temperature of the pack contents drops sharply. Which of the following is a correct description of the reaction occurring in the pack?

When the isotope undergoes beta decay, what isotope is formed?

Choose the best classification of the reaction represented by the following equation: C 6H 12O 6(s) + 6O 2(g) → 6CO 2(g) + 6H 2O(l)