Answer: 160 ml
Explanation:
The expression used will be :
where,
= concentration of Ist alcohol solution= 10%
= concentration of 2nd alcohol solution= 55%
= volume of Ist alcohol solution = 200 ml
= volume of 2nd alcohol solution= v ml
= concentration of resulting alcohol solution= 30%
= volume of resulting alcohol solution= (v+200) ml
Now put all the given values in the above law, we get the volume of added.
By solving the terms, we get :
Therefore, the volume of 55% mixture needed to be added to obtain the desired solution is 160 ml.
Explanation:
Group 1A consist of metals and group. 2A consist of non metals . group1A elements can become stable by donating 1 electron in the same way the elements of group 7A also becomes stable by gaining one electron . So due to being so close to being a inert gas element it is compared to the nearest noble gas.
Explanation:
You need to remember a few things if you want the answer to this question...
- A atom has a circle within a circle so consider that it looks like a double circle..
- Protons and neutrons go in the center of that double circle..
- Electrons go on the outer sides of the two circles.
- Because of the given numbers of protons, neutrons, and electrons we know that the element you need to draw is Argon.
Therefore you need to draw a atom that is similar to this:
Hope this helps.
