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A chemical reaction has two elements as reactants. What type of reaction might occur?

Answer 1

In a composition reaction, two or more reactants -- often but not always elements -- combine to form a more complex compound.

An example of a composition reaction is burning coal, which is mostly carbon:

#"C"+"O"_2->"CO"_2#

Composition reactions can also involve simpler compounds combining to make more complex ones. For example, the carbon dioxide produced above could be captured by magnesium oxide:

#"MgO"+"CO"_2->"MgCO"_3#

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Answer 2

Owen Ambrose

A chemical reaction with two elements as reactants might undergo a synthesis or combination reaction, where the elements combine to form a single compound.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.