Please review this model chemical reaction: A + 2B ---> C + 4D

Which of the above represents the reactants? Select ALL correct responses, below.

a
C + 4D
b
A
c
C
d
2B

The correct responses are:

- A (representing the reactant A)
- 2B (representing the reactant B)

The reactants in the chemical reaction represented by A + 2B ---> C + 4D are:

- A
- 2B (d)

To determine which of the options represent the reactants in the given chemical reaction, we need to identify the substances on the left side (before the arrow). In this case, the reactants are A and 2B.

Looking at the options:

a) Represents the products of the reaction (C + 4D), not the reactants.
b) Represents one of the reactants (A).
c) Represents one of the products of the reaction (C), not the reactants.
d) Represents one of the reactants (2B).

Therefore, the correct responses are b (A) and d (2B).