I have multiple answers to this question:
1. to make (an idea, statement, etc.) clear or intelligible; to free from ambiguity. 2. to remove solid matter from (a liquid); to make into a clear or pellucid liquid. 3. to free (the mind, intelligence, etc.) from confusion; revive
The statements which are true about half-life are given below:
- A radioactive element's half-life stays the same when its temperature changes.
- A radioactive element's half-life stays the same when the pressure upon it changes.
Thus, the correct options are B and F.
<h3>What is Half-life?</h3>
The half-life of any radioactive element may be defined as the time taken for the radioactivity of a specified isotope to drop to half of its original value.
The above statement is true about the half-life of any radioactive element because the half-life of any substance does not depend on pressure, temperature, and concentration.
Therefore, it is well described above.
To learn more about Half-life, refer to the link:
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<em>To be effective, key choices must be <u>parallel.</u></em>
Areas near continents where freshwater rivers enter the ocean. The ocean IS salt water.
Easy:
1. 2K + Br2 — KBr
2. 4Sb + 3O2 — SB4 O6
Medium:
1. 2Na+2H2O — 2NaOH+H2
2. 2KNO3 — 3KNO2+O2
Hard:
1. 4NH3+5O2 — 4NO+6H2O
2. C2H5OH+3O2 — 2CO2+3H2O
