Question

what type of chemical reaction is shown: $2\\ n_2 + o_2 \
ightarrow 2\\ n_2o$
combustion
decompostion
synthesis
double replacement

Explanation:

A synthesis reaction is defined as two or more reactants combining to form a single product. In the given reaction $2\text{N}_2 + \text{O}_2
ightarrow 2\text{N}_2\text{O}$, two distinct reactants (nitrogen gas and oxygen gas) combine to produce one product (dinitrogen monoxide), which matches the definition of a synthesis reaction. Combustion requires oxygen and produces oxides/water, decomposition breaks a compound into simpler substances, and double replacement involves swapping ions between two compounds, none of which apply here.

Answer:

Synthesis