Answer:
Al+3
Explanation:
Ion is a positively or negatively charged species. A neutral species does not carry any charge.
here only Al has +3 charge. So it is an ion.
You just let it get colder, and the fat should stay on the top of the gravy.
Then you just have to take it away......
Answer:
A Physical Model might include a drawing or a three-dimensional object.
Hope this helps ^^
Answer:
Option b, Irreversible hydrocolloid impression material
Explanation:
Irreversible is used as an impression material to take impression from edentulous jaws. It is also used in wound healing and drug delivery.
Alginate is a natural polymer found in cell wall of brown seaweed.
Its monomers are β-D-mannuronate and α-L-guluronate.
In association with Ca2+, it forms gel. It is hydrophilic in nature.