Answer: Ethyl Ethanoate can be used as a developing solvent. It’s safer.
Explanation:Di ethyl ether should be carefully used because it’s highly flammable and intoxicating when inhaled and can cause explosions because of its high reactivity to air and light.
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:
A colloid is a heterogeneous mixture in which the dispersed particles are intermediate in size between those of a solution and a suspension. The particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas.
Explanation:
Explanation:
acids reduce the pH of the food.if used properly,the pH will be reduced to a range where pathogens and many spoilage organisms will not grow
Is there any answer choices before i get started on working out the problem