So, 0.02 - 0.0, that's all over the change in time. That's the final time minus the initial time, so that's 2 - 0. So the rate of reaction, the average rate of reaction, would be equal to 0.02 divided by 2, which is 0.01 molar per second. So that's our average rate of reaction from time is equal to 0 to time is equal to 2 seconds.

Sears craftsman 41a4315 7d garage door opener circuit boardQ. A reaction takes 90 seconds to finish. In 30 seconds 21 cm 3 of gas is made. In 60 seconds 38 cm 3 of gas is made. In 90 seconds 50 cm 3 of gas is made. Calculate the rate of reaction between 0 and 30 seconds.

ΔS บ reaction = Σn p S บ (products) - Σn r S บ (reactants) where the first Σ to take sum of all the products in this reaction, and the second sums all the reactants. The n p and n r represent the moles of each product or reactant, respectively. An example calculating the entropy change in a reaction: CH 4 (g) + 2O 2 (g) = CO 2 (g) + 2H 2 O(l)