A compound is made up of a single type of molecule. A mixture, on the other hand, is made up of different substances that can be distinguished from one another.
As an example:
Water (pure water) is a compound since it's only made up of water molecules
Seawater is a mixture since it is made up of water molecules and soluble salts
Answer:
A experimental investigation
Since the Summer solstice is when the sun is highest in the sky and the solstice is in June, that's your answer :)
The poles are located at the 90 degrees. The poles are extremely cold environments. If you think about how relatively close to the pole 60 degrees would be, you can assume it would be cold but not as extreme. So short summer, cold winters seems to be the most accurate.
You can also see in a map (attached) where the 60 degrees parallel actually is, and you can see what the climate tends to be in those areas.
Answer: The reaction is first order overall.
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.
![Rate=k[A]^x[B]^y](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5Ex%5BB%5D%5Ey)
k= rate constant
For the given rate law:
![Rate=k[A]^1[B]^1](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5E1%5BB%5D%5E1)
x = 1= order with respect to A
y =1= order with respect to B
n =( x+y)= (1+1) = 2 = Total order
a) If [A] is doubled, the reaction rate will increase by a factor of 2: True
![Rate'=k[2A]^1[B]^1](https://tex.z-dn.net/?f=Rate%27%3Dk%5B2A%5D%5E1%5BB%5D%5E1)
![Rate'=k[2]^1[A]^1[B]^1](https://tex.z-dn.net/?f=Rate%27%3Dk%5B2%5D%5E1%5BA%5D%5E1%5BB%5D%5E1)
![Rate'=[2]^1\times Rate](https://tex.z-dn.net/?f=Rate%27%3D%5B2%5D%5E1%5Ctimes%20Rate)
![Rate'=[2]\times Rate](https://tex.z-dn.net/?f=Rate%27%3D%5B2%5D%5Ctimes%20Rate)
b) The reaction is first order overall: False
The overall order is 1+1= 2.
c) k is the reaction rate constant: True
![Rate=k[A]^x[B]^y](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5Ex%5BB%5D%5Ey)
k= rate constant
d) The reaction is first order in [B]: True
For the given rate law:
![Rate=k[A]^1[B]^1](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5E1%5BB%5D%5E1)
x = 1= order with respect to A
e) The reaction is first order in [A]: True
For the given rate law:
![Rate=k[A]^1[B]^1](https://tex.z-dn.net/?f=Rate%3Dk%5BA%5D%5E1%5BB%5D%5E1)
y =1= order with respect to B