The reaction represented by the equation: xa + yb > productsis started by mixing 1.00 mol of a with 2.00 mol of b in a 1.00 l container at a certain temperature. these concentrations are measured after a certain time. substance concentration, m[a] 0.875[b] 1.81which is the x/y ratio in this reaction?

The x/y ratio of the reaction is 0.68

Explanation:

Hi there!

The rate of dissapearence of A and B can be expressed as follows:

rate A = -Δ[A] /Δt

rate B = -Δ[B] / Δt

Where:

Δ[A] = change in the concentration of A (final [A] - initial [A])

Δ[B] = change in the concentration of B (final [B] - initial [B])

Δt = elapsed time.

These rates are equal if we divide each of them by their respective estechiometric coefficient:

1/x · (-Δ[A] /Δt) = 1/y · (-Δ[B] / Δt)

Let´s multiply by x each side of the equation:

-Δ[A] /Δt = x/y · (-Δ[B] / Δt)

now, let´s divide each side of the equation by (-Δ[B] / Δt)

(-Δ[A] /Δt) · (- Δt / Δ[B]) = x/y

Δ[A] / Δ[B] = x/y

Δ[A] = final [A] - initial [A] = 0.875 M - 1.00 M = -0.13 M

Δ[B] = final [B] - initial[B] = 1.81 M - 2.00 M = -0.19 M

-0.13 M / -0.19 M = x/y

x/y = 0.68

The x/y ratio of the reaction is 0.68

answer: cellular respiration takes in food and uses it to create atp, a chemical which the cell uses for energy. usually, this process uses oxygen, and is called aerobic respiration. it has four stages known as glycolysis, link reaction, the krebs cycle, and the electron transport chain.