The choice for this question from my perspective was letter D which was... <span>Cover the wound with the palm of your hand until a bandage is located.</span>
The reaction is:
<span>2Na + Cl2 ---> 2 Na+ + 2Cl- </span>
<span>
The specie that is oxidized is the one whose oxidation number increased wherein it is shown by sodium or Na. Chlorine or Cl, on the other hand, represents the substance being reduce where there is a change from a neutral charge to -1.</span>
Answer:
plankton
Explanation:
like in spongebob lol but for real I'm a marine biologist I know this is the answer lol
Answer:
Explanation:
A radioactive isotope is an isotope that undergoes nuclear decay, breaking apart into a smaller nucleus and emitting radiation during the process.
The half-life of an isotope is the amount of time it takes for a certain quantity of a radioactive isotope to halve.
For a radioactive isotope, the amount of substance left after a certain time t is:
(1)
where
is the mass of the substance at time t = 0
m(t) is the mass of the substance at time t
is the half-life of the isotope
In this problem, the isotope is uranium-235, which has a half-life of
We also know that the amount of uranium left in the rock sample is 6.25% of its original value, this means that
Substituting into (1) and solving for t, we can find how much time has passed:
Lithium, Sodium, Potassium; any of the Alkali Metals, which are farthest left on the periodic table. This is because they only have one electron in their outermost shell, so they would rather lose an electron rather than try to gain 7 to achieve that full outer shell.
