If iodine has a 13.3 hour half life, 3.12 mg of the original sample will still be present after 39.9 hours.
<h3>what is The meaning of half-life?</h3>
The reaction rate must decrease to half its initial value before the process has reached its half life. The split of that first order chemical reaction is a quantity related to the rate constant of the reaction.
Briefing:
Given, the iodine half-life is 13.3 hours. As a result, half-life t1/2 Equals ln 2/ K
k = 0.693 .... t1/2
≈ 0.693 /13.3 hours
= 5.21 *10-2
The rate law sets the flow timetime is set by the rate law, which varies for each emotion. When only one reactant's quantity influences the speed of chemical reaction, this is referred to as a first-order contact. Because of this, it is occasionally referred to as unimolecular process. The rate is as follows for this type of reaction: k= 1/t ln [A]0 / [A] is the rate constant for the first order reaction. 5.21 * 10-2 hours are in 39.9 hours.
By including all the numbers in the initial order reaction's rate constant equation, we obtain [A].
t = 3.12mg
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Answer:0.432 mol. Explanation: Divide the given number of molecules by Avogadro's constant. Avogradro's constant is the number of atoms/molecules ...
Explanation:
D.i think hope i help:):)
<span> the kinetic molecular theory states that all matter is made up tiny constantly moving particles. in a gas they are spread out very far from each other, a liquid is closer together and a solid is packed tightly. when these materials are heated the particles begin to move faster making more friction which causes changes in state, such is call the heat if fusion and vaporization. </span>
Answer:
Group 2
Explanation:
The force pulling a tree down is the same that brings a skier to the lodge: food and beer. No, just kidding. Gravity. The parachuter in Group three also has gravity as a key force, but the reverse force of the air on the parachute is a key consideration to the problem, as well as to the parachuter. But it comes close.