Answer:
proposing a hypothesis.
Explanation: Therefore the last step in the scientific method is proposing a hypothesis or obtaining a conclusion.
Explanation:
retype the equation.
the equation is'nt complete
Answer:
43.89 min
Explanation:
Given that:-
The speed of light = ![3.00\times 10^8\ m/s](https://tex.z-dn.net/?f=3.00%5Ctimes%2010%5E8%5C%20m%2Fs)
The distance = ![7.9\times 10^8\ km](https://tex.z-dn.net/?f=7.9%5Ctimes%2010%5E8%5C%20km)
The conversion of distance in km to distance into m is shown below as:-
1 km = 1000 m
So,
Distance = ![7.9\times 10^8\times 1000\ m=7.9\times 10^{11}\ m](https://tex.z-dn.net/?f=7.9%5Ctimes%2010%5E8%5Ctimes%201000%5C%20m%3D7.9%5Ctimes%2010%5E%7B11%7D%5C%20m)
The relation between speed distance and time is shown below as:-
![Speed=\frac{Distance}{Time}](https://tex.z-dn.net/?f=Speed%3D%5Cfrac%7BDistance%7D%7BTime%7D)
Thus,
![3.00\times 10^8=\frac{7.9\times 10^{11}}{Time}](https://tex.z-dn.net/?f=3.00%5Ctimes%2010%5E8%3D%5Cfrac%7B7.9%5Ctimes%2010%5E%7B11%7D%7D%7BTime%7D)
![300000000\times time=10^{11}\times \:7.9\ s](https://tex.z-dn.net/?f=300000000%5Ctimes%20time%3D10%5E%7B11%7D%5Ctimes%20%5C%3A7.9%5C%20s)
Time = 2633.33 seconds
Also, 1 s = 1/60 min
So,
Time=![\frac{2633.33}{60}\ min=43.89\ min](https://tex.z-dn.net/?f=%5Cfrac%7B2633.33%7D%7B60%7D%5C%20min%3D43.89%5C%20min)
Answer:
I. Increasing pressure will allow more frequent successful collision between particles due to the particles being closer together.
II. Rate of reaction increases due to more products being made; as increased pressure favours the exothermic side of the equilibrium.
III. Increasing temperature provides particles lots of (Kinetic) energy, for more frequent successful collision due to the particles moving at a faster rate than before. However, favouring the endothermic side of the equilibrium due to lots of energy required to break and form new bonds.
IV. Rate of reaction increases due to increase temperature favouring both directions of the equilibrium - causing products to form faster.
Hope this helps!