I can’t really understand your question sorry
Answer:
2. Chemical reactions changes occur when the bonds between atoms in a molecule are created or destroyed.
3. When you reach your its boiling point, the molecules in liquid have enough energy to become a gas.
4. When you have a solid with more than one type of compound, it is called a mixture.
5. A Crystal is a form of solid where the atoms are arranged is a very specific order.
6. If you have different types of molecules dissolved in a liquid, it is called a solution
The volume : V₁ = 1.29 ml
<h3>Further explanation</h3>
Given
V₂=450 ml
M₂=0.02
M₁=7.0
Required
V₂
Solution
Dilution is the process of adding solvent to get a more dilute solution.
The moles(n) before and after dilution are the same.
n₁=n₂
Dilution formula :
M₁V₁=M₂V₂
Input the value
V₁= (M₂V₂)/M₁
V₁ = (0.02 x 450)/7
V₁ = 1.29 ml
Answer:
I hope the link above will be helpful
Answer:
0.1
Explanation:
Using Henderson-Hasselbalch equation
pH = pKa + log ( base / acid )
pH= 9.0 , pKa = 10.0
9.0 = 10 + log ( base / acid )
9 - 10 = log ( base / acid )
10⁻¹ = ( base / acid )
( base / acid ) = 0.1