Answer:
A. mutation
Explanation:
mutation is called as change in genetic sequence (i.e, in DNA)
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In photograph a, a coil of zinc metal is in a solution of sulfuric acid. In photograph b, a yellow solution of sodium chromate is being added to a colorless solution of silver nitrate. What clues in the photographs indicate that a chemical change is probably occurring.
In photograph a, chemical change is occuring as when a coil of zinc metal is in a solution of sulfuric acid, then the solution starts bubbling, that indicates a chemical change.
In photograph b, a yellow solution of sodium chromate is being added to a colorless solution of silver nitrate, that changes the color of the solution to red , that indicates a chemical change.
The human eye can detect light at wavelengths between 400 to 900 nanometers. That is why we call this part of the electromagnetic spectrum visible light.
Answer:
Explanation:
insoluble salts are prepared by the reaction of two soluble salts.
To prepare lead iodide, react aqueous solutions of KI and Pb(NO3)2, you'll get yellow precipitate of lead iodide and soluble potassium nitrate. separate the mixture by filtration. wash the residue (PbI2) and dry.
see equation below
→ ![PbI2 + 2KNO3](https://tex.z-dn.net/?f=PbI2%20%2B%202KNO3)