The answer to this question is b hope this helps you out
Answer:
a) [Tris0] : [Tris] = 1 : 100
b) Range = 7.1 to 9.1
Explanation:
a) Calculation of ratio of the basic and the acidic forms of tris
pH of a buffer is calculate using Henderson-Hasselbalch equation
Conjugate acid of Tris dissociated as
For tris,
Salt or Basic form = tris0
Acid or Acidic form = Tris
pKa = 8.1
pH = 6.1
[Tris0] : [Tris] = 1 : 100
b) Range of Tris
Range of any buffer is:
From (pKa -1) to (pKa+1)
So, range of Tris is:
From (8.1 - 1) to (8.1 +1)
or from 7.1 to 9.1
States that mass is an isolated system is neither created nor destroyed by chemical reactions or physical transformations
Answer:
The answer to your question is Sediment C
Explanation:
Permeability is the property of passing through a material without physically or chemically affecting it.
If a substance is very permeable, it will pass through a material rapidly others substances can be permeable but can not pass through the material quickly.
In the data given, we can conclude that the third substance is the least permeable because less quantity of water has passed through it.
Answer:The octet rule
Explanation:that there is eight electrons in the valence shell to make it stable.