Question:

Which of the following is always true in combustion reactions? (MARK ALL THAT APPLY) More energy is required to start the reacti

Which of the following is always true in combustion reactions? (MARK ALL THAT APPLY)
More energy is required to start the reaction than is released as a product
O Oxygen is always a reactant
Water is always a product
O Carbon dioxide is always a product
O More energy is released as a product than is required to start the reaction.
O A hydrocarbon is always a reactant.

Which of the following is always true in combustion reactions? (MARK ALL THAT APPLY) More energy is required to start the reaction than is released as a product O Oxygen is always a reactant Water is always a product O Carbon dioxide is always a product O More energy is released as a product than is required to start the reaction. O A hydrocarbon is always a reactant.