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:
6 mol/min
Explanation:
2A+2B→4C
The relationship between the reactants and products of this equation is given by;
1/2 -d[A]/dt = 1/2 -d[B]/dt = 1/4 d[C]/dt
Our focus is on A and C
From the question;
d[A]/dt = 3mol/min
We have;
1/2 (3) = 1/4 d[C]/dt
d[C]/dt = 4/2 * 3 = 6 mol/min
It has 4 because electrons are negative.
Answer : Option D) Distilled Water.
Explanation : As the definition of the compound says,it is made up of two or more different elements in combination which is not easily seperable.
The only answer that was relevant to this definition is distilled water as it is made up of combination of hydrogen and oxygen atoms.