dr bob - when you say plates out can I use the word reacts instead?

I think so. Actually, a very finely divided metal (very small pieces) deposits onto the iron. It is black because it is so finely divided. I used plates out because it is an oxidation/reduction reaction and the same thing happens in an electroplating system.

DR BOB- Can you help me with these questions?

1. 4/3
2. 22/22 =
3. 8/3 = ?/30
4. 8/9 – 4/9 =
5. 4/9 + 1/5 =
6. (5/8)(1/4) =
I neeed to know how to work them

Yes, I can help but you didn't post a question. The no. 1 with nothing else is all that printed. Please go to the top of the page, click on Ask a new question, and post your question as a new entry.

Yes, you can use the word "reacts" instead of "plates out" depending on the context. However, it's important to note that "plates out" and "reacts" have slightly different connotations and may not always be interchangeable.

The phrase "plates out" often refers to a chemical reaction that occurs on a solid surface, such as the formation of a film or coating. It conveys the idea of a substance depositing or adhering onto a surface. For example, you could say that a metal reacts with oxygen in the air and plates out as a layer of rust on its surface.

On the other hand, the word "reacts" is a more general term that describes the process of substances interacting or undergoing a chemical reaction. It doesn't specifically imply the formation of a film or coating on a surface. For example, you could say that a metal reacts with acid to produce a gas.

In summary, while "reacts" can often be used as a substitute for "plates out," it's important to consider the precise meaning and context of the phrase to ensure accurate communication.