Which type of reaction is 2c2h6 + 7o2 → 4co2 + 6h2o? a. decomposition reaction b. synthesis reaction c. combustion reaction d. double-replacement reaction

C) Combustion reaction.

Explanation: a combustion reaction is an exothermic reaction in which something reacts with oxygen. The combustion of organic compounds usually takes the form: organic compound + oxygen => water + carbon dioxide. As we can see the given reaction is an organic compound (C2H6) plus oxygen (O2) and the products are carbon dioxide (CO2) and water (H2O), so it is a combustion reaction.

because u need two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei to form isotopes.

so since they all have the same shape? i mean maybe because m& m and reeses are both chocolates