Answer:
Explanation:
Given that:
Half life = 
days
Where, k is rate constant
So,
The rate constant, k = 0.00007 days⁻¹
Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D)
Where,
![[A_t]](https://tex.z-dn.net/?f=%5BA_t%5D)
is the concentration at time t
![[A_0]](https://tex.z-dn.net/?f=%5BA_0%5D)
is the initial concentration
Given:
5 % is lost which means that 0.05 of is decomposed. So,
![\frac {[A_t]}{[A_0]}](https://tex.z-dn.net/?f=%5Cfrac%20%7B%5BA_t%5D%7D%7B%5BA_0%5D%7D)
= 1 - 0.05 = 0.95
t = ?
![\frac {[A_t]}{[A_0]}=e^{-k\times t}](https://tex.z-dn.net/?f=%5Cfrac%20%7B%5BA_t%5D%7D%7B%5BA_0%5D%7D%3De%5E%7B-k%5Ctimes%20t%7D)
t = 732.76 days =
(05.01)
Which statement best explains if the graph correctly represents the proportional relationship y = 0.5x? (4 points)
<span>Yes, the points shown on the line would be part of y = 0.5xYes, all proportions can be shown on a graph of this lineNo, the points shown would not be part of y = 0.5xNo, proportions cannot be represented on a graph</span>
Density=mass/volume
d= 452.1/292
d= 1.55g/cm3
Answer:
K2CO3 (aq) ---> 2K+ (aq) + CO32- (aq)
Explanation:
Dissociation refers to the ability of an ionic compound to breakdown into its respective ions. An ionic compound is formed by the combination of a positive ion (cation) and a negative ion (anion). When these ionic compound dissolves in water, it dissociates i.e. separates into its constituent ions.
In this question involving potassium carbonate being described as a strong electrolyte, which means that it dissociates completely in water as follows:
K2CO3 (aq) ---> 2K+ (aq) + CO32- (aq)
Answer herbert
Explanation:
cause he did not do any of the safety precautions and he was prob not listening to the teacher
