2C8H18 + 17O2 → 16CO + 18H2O
Answer: D. Physical change
Explanation:
Phase changes are physical changes.
The reaction of an acid and a base, which forms water and a salt
Ammonium sulfate precipitation is used to separate proteins by function
However, it is one of the most commonly used methods for laboratory scale protein purification and fractionation. This method is also used to separate proteins by altering their solubility.
<h3>What is separation techniques?</h3>
Separation technique is a process or method used to the components of mixtures.
There are different types of separation technique which includes sublimation, precipitation, sieving, evaporation and many more.
Learn more about separation techniques:
brainly.com/question/13052303