As the temperature of a sample of a radioactive element decreases, the half-life will remain the same
<u>Explanation:</u>
Half-life is defined as the time needed for half of the opening material to modify or decay. Half-lives can be estimated from measures on the variation in the mass of a nuclide and the period it gets to occur. In the period of that substance's half-life, half of the primary nuclei will decompose.
Although chemical changes were raced up or delayed down by varying factors such as temperature, concentration, etc, these factors do not affect half-life. Each radioactive isotope will have its unique half-life that is independent of any of these factors.
Answer:
2Ag(s) + Cu^2+(aq) ----------> 2Ag^+(aq) + Cu(s)
Explanation:
Ag(s)/Ag^+ (aq) is the anode as shown while Cu^2+(aq)/Cu^2(s) is the cathode.
E°cell= E°cathode -E°anode= 0.34 -0.80= -0.5V
The cell is not spontaneous as written because E°cell is negative. This implies that the electrodes of the cell must be interchanged to make the cell spontaneous.
The option that would be appropriate to model nuclear fission is disturbing a drop of water such that it breaks into smaller droplets
Nuclear fission refers to the splitting of a heavy nucleus into lighter nuclei owing to the bombardment of small particle.
The liquid drop model provides the most apt model for describing the concept of nuclear fission. In nuclear fission, the nucleus breaks due to the increase in repulsion between the nuclear charges.
As the size of the nucleus continues to increase, any little disruption will; result in the breaking up of the nucleus into smaller fragment called daughter nuclei.
Hence, the model of disturbing a drop of water such that it breaks into smaller droplets is the most apt description of nuclear fission.
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