Question

1. which 2 of the following gases were formed during the combustion reaction in the candle lab? carbon dioxide oxygen water vapor nitrogen

Explanation:

Candle is mainly composed of hydrocarbons. When it burns (combustion reaction), it reacts with oxygen in the air. According to the law of conservation of mass, the products are carbon dioxide (\(CO_2\)) and water (\(H_2O\), in the form of water vapor in this case). Oxygen is a reactant (consumed in the reaction, not formed), and nitrogen is generally inert in this combustion reaction (not involved in forming new substances from the candle - combustion process).

Answer:

Carbon dioxide, Water vapor