Question

According to this graph, which statement describes how the amount of copper changes over time in the reaction
CuO + H2 → Cu + H2O?

Answer 1

A.
The amount of the reactant CuO increases rapidly at first and then continues to increase slowly.

B.
The amount of the product Cu increases rapidly at first and then continues to increase slowly.

C.
As time passes there is steady decrease in the amount of Cu.

D.
As time passes CuO and Cu will reach a dynamic equilibrium.

Answer 2

Looking at the graph, i can see that the amount of Cu increases over time.

Answer 3

so b?

Answer 4

one more question.

Which statement contrasts the two types of mixtures?

Answer 5

A.
A heterogeneous mixture has a uniform composition, whereas a homogeneous mixture has visually distinguishable parts.

B.
A heterogeneous mixture has visually identifiable parts, whereas a homogeneous mixture has a uniform composition.

C.
A solution is composed of a fixed ratio of elements forming a compound, and a heterogeneous mixture has a uniform composition.

D.
A solution contains a solute and a solvent, whereas a heterogeneous mixture contains a mixture of solvents.

Answer 6

The answer is B again.
Does that make sense? homo means the same so it is all uniform
Hetro means different so there are different parts.

Answer 7

yes thank you