Darwin observed the beaks of the birds and how the different beaks helped the birds to eat different types of seeds.
This relates to natural selection because certain finches with say a smaller shorter beak would be able to eat only smaller seeds and fruits as to where a finch with a longer larger beak could eat larger bigger seeds and fruits.
Hope this helped! Have a great day!
When a volcano erupts magma comes from the top when the magma cools down it hardens and leaves a hard surface
Which statement about exothermic reactions is TRUE?
A.In an exothermic reaction, energy is absorbed, bonds are broken, and the temperature decreases.
<h3>B. In an exothermic reaction, energy is released, bonds are formed, and the temperature increases.</h3>
Answer:
4. K = [CF₂Cl₂] [HCl]² / [HF]² [CCl₄]
5. K = [NH₃] [HCl]
6. K = 1 / [SO₃]
Explanation:
Equilibrium constant expressions are defined as the ratio between concentrations of products and concentrations of reactants powered to its reaction quotient (Compounds in solid or liquid phase are not taken in the expression).
For the reactions:
4. CCl₄(g) + 2HF(g) ⇌ CF₂Cl₂(g) + 2HCl(g)
Equilibrium expression, K, is:
<em>K = [CF₂Cl₂] [HCl]² / [HF]² [CCl₄]</em>
5. NH₄Cl(s) ⇌ NH₃(g) + HCl(g)
<em>K = [NH₃] [HCl]</em>
6. SO₃(g) + H₂O(l) ⇌ H₂SO₄(l)
<em>K = 1 / [SO₃]</em>
