Solution :
Given :
Amount of anserine solution = 0.200 M
pH value is = 7.20
Preparation of 0.04 M solution of anserine from the 0.2 M solution.
0.2 M x
= 0.04 M x 1000 ml
= 200 ml
So the 200 ml of 0.2 M anserine solution is required to prepare0.04 M of anserine.
0.1 M x
= 0.04 x 1000 ml
= 400 ml
Therefore, 400 ml of HCl is needed.
Answer:
The vernal equinox occurs on March 20 or March 21 each year and signals the start of spring in the Northern Hemisphere (and fall in the Southern Hemisphere). The Earth tilts at an angle of 23.5 degrees on its axis relative to its plane of orbit around the sun. My source is history.com A, i think
Explanation:
hope this hlps
You need to monitor the solution to see when the crystals start gathering at the bottom of the solution. You can slowly add alum until it stops dissolving. The point just before it starts its sedimentation at the bottom is the point when the solution is saturated.
Answer:
* Beryllium is the lightest of all the alkaline earth metals.
* It has higher melting and boiling points compared to other elements in group 2.
Explanation:
<em>I</em><em> </em><em>hope</em><em> </em><em>it</em><em> </em><em>helps</em><em> </em><em>></em><em>~</em><em><</em>