Explanation:
here is the answer bae. Feel free to ask for more
In chemistry, there are two types of change, they are chemical and physical changes. A chemical change is one in which new substance are formed and it is always irreversible while a physical change is one in which no new substance is formed and it is always reversible. There are many factors that can indicate that a chemical change has taken place, these include: energy transfer, formation of precipitation, gas production, etc. Fracture formation does not indicate chemical change. In fracture formation nothing changes, so it is a form of physical change.
Answer: 690 s
Explanation: Rate law says that rate of a reaction is directly proportional to the concentration of the reactants each raised to a stoichiometric coefficient determined experimentally called as order.
For a reaction: 
![Rate=k[A]^2](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5E2)
k= rate constant=
x = 2= order with respect to A
For a second order reaction, ![t_\frac{1}{2}=\frac{1}{k\times [A_0]}](https://tex.z-dn.net/?f=t_%5Cfrac%7B1%7D%7B2%7D%3D%5Cfrac%7B1%7D%7Bk%5Ctimes%20%5BA_0%5D%7D)
= half life = time taken for a reaction to complete to half.
![[A_0]](https://tex.z-dn.net/?f=%5BA_0%5D)
=initial concentration= 0.0500 M
Thus ![t_{\frac{1}{2}=\frac{1}{2.90\times 10^{-2}\times [0.0500]}=690s](https://tex.z-dn.net/?f=t_%7B%5Cfrac%7B1%7D%7B2%7D%3D%5Cfrac%7B1%7D%7B2.90%5Ctimes%2010%5E%7B-2%7D%5Ctimes%20%5B0.0500%5D%7D%3D690s)
Answer:
false
Explanation:
i had the same thing to do
Follow the leads and check where the victim eat and drank last
