Answer:
Solid ionic compounds do not conduct electricity because the ions are held firmly in place. The ions cannot move to conduct the electric current. But when an ionic compound melts, the charged ions are free to move. Therefore, molten ionic compounds do conduct electricity.
The age of the fossil given the present amount of Carbon-14 is given in the equation,
A(t) = A(o)(0.5)^t/h
where A(t) is the current amount, A(o) is the initial amount, t is time and h is the half-life. Substituting the known values to the equation,
A(t) / A(o) = 0.125 = (0.5)^(t/5730)
The value of t from the equation is 17190.
Thus, the age of the fossil is mostly likely to be 17190 years old.
the stability of the radioactive element
Explanation:
The stability of a radioactive element can influence the rate of nuclear decay reaction. Pressure, temperature and concentration only affects chemical changes. These factors would not have any effect on radioactive decay of an element.
- Every atomic nucleus have a specific neutron/proton ratio which ensures the stability of the nucleus.
- Any nucleus that deviates from the stability ratio will continue to split until it achieves stability.
- The more unstable a nucleus is, the faster it decays.
- This is the basis of radioactive decay of elements.
Learn more:
radioactivity brainly.com/question/10125168
radioactive brainly.com/question/4207569
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Answer:
B. Tell the instructor
Explanation:
Always to the instructor about any accidents happens in a lab.
When you are doing a experiment, you are testing if your hypothesis is correct or false. If your hypothesis is false, you have to disgard it. If it is correct, you have to do many more parallels, and if they also confirm your hypothesis, your hypothesis can become a theory.
