Question

A green box contains a blue box and a pink box. The blue box contains C H subscript 4 + 2 O subscript 2. An arrow then leads in the green box to the pink box, which says C O subscript 2 + 2 H subscript 2 O. Lines lead from labels to parts of the boxes. Label A leads to the beginning of the green box. Label B leads to the + in the blue box. Label C leads to the arrow. Label D leads to the 2 in 2 H subscript 2 O. Label E leads to the end of the pink box.
Identify each part of this chemical equation that describes the burning of methane and oxygen.

B (blue box):

D (number):

E (purple box):

Answers

GPT-4o mini
In the context of the chemical equation describing the combustion of methane (CH₄) and oxygen (O₂), we can identify each part as follows:

- **B (blue box)**: This part represents the reactants of the combustion reaction, which are methane (CH₄) and oxygen (O₂). Therefore, B refers to the '+' sign in the blue box that indicates the reactants are combined.

- **D (number)**: This part is associated with the coefficient '2' in front of H₂O in the products (2 H₂O) within the pink box. This indicates that two molecules of water are produced in the combustion reaction.

- **E (pink box)**: This part corresponds to the products of the combustion reaction, which are carbon dioxide (CO₂) and water (H₂O). Therefore, E refers to the end of the pink box where the products CO₂ + 2 H₂O are listed.

So, to summarize:

- **B (blue box)**: Reactants (CH₄ + 2 O₂)
- **D (number)**: The coefficient '2' in front of H₂O (indicating two water molecules produced)
- **E (pink box)**: Products (CO₂ + 2 H₂O)