Answer:
The half-life is
Explanation:
From the question we are told that
The sample is 90 Y
The first activity is per minute
The second activity is per minute
The duration from 1:00 p.m. on December 3, 2006 to 2:15 p.m. on December 17, 2006 is
Converting to minutes we have
The first order rate constant for this disintegrations can be mathematically represented as
Where is the rate constant
Substituting values
So
The half life is mathematically represented as
So
It’s b I don’t think you could do it haha is that a little thing you can
Answer:
Explanation:
The pH of a solution can be found by using the formula
Since we are finding the H+ ions we find the antilog of the pH
So we have
We have the final answer as
Hope this helps you
Answer : The number of moles of carbonate ion, produced are, 0.207 moles.
Explanation : Given,
Moles of sodium carbonate = 0.207 mol
As we know that when sodium carbonate dissolved in water then it dissociates to give 2 sodium ion and 1 carbonate ion.
The balanced chemical reaction will be:
From the balanced chemical reaction we conclude that,
As, 1 mole of sodium carbonate dissociate to give 1 moles of carbonate ion,
So, 0.207 mole of sodium carbonate dissociate to give 0.207 moles of carbonate ion,
Thus, the number of moles of carbonate ion, produced are, 0.207 moles.
Answer:
interests center around the physics and chemistry of the terrestrial planets, in particular, as it relates to their origin and early evolution.
Explanation: