The half-life of tritium, or hydrogen-3, is 12.32 years. after about 24.6 years, how much of a sample of tritium will remain unchanged?
a. 1/8
b. 1/4
c. 1/3
d. 1/2

Based on the equation and the information in the table, what is the enthalpy of the reaction?

If 1.8 l of water is added to 2.5l of a 7.0 m koh solution, what is the molarity of the new solution

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.