A.) half - life of a radioactive substance is defined as the time during which concentration of the substance becomes half the initial value.
presence of heat can change solid tu liquid
and liquid to gas
Both indicate the temperature at which the solid and liquid states of a substance are in equilibrium would be your answer.
This is beacause the melting point of a substance is the same as the freezing point of a substance. At this particular temp, the substance can be either a solid or a liquid.
hope this helps!
Answer:
Because they are extremely stable molecules, CFCs do not react easily with other chemicals in the lower atmosphere. ... Free chlorine atoms then react with ozone molecules, taking one oxygen atom to form chlorine monoxide and leaving an ordinary oxygen molecule.
Explanation:
Explanation:
bbdjsjakkakajdjehejkskssjsjjanzbh
please report me :/
