azibur3191

22.06.2019 • 

Physics

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)

Ответ:

cadanceowasso

13.02.2020

Physics

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1.9 x 10⁻³ M/s.

Explanation:

The average rate can be defined as the change in the concentration (decrease of reactants concentration or increase in products concentrations) with time.

The average rate of the reaction = - ΔC/Δt,

where, ΔC is the change in the concentration during the time interval Δt.

∴ Average rate = - ΔC/Δt = - (0.4 M - 1.8 M) / (720 s - 0 s) = 1.94 x 10⁻³ M/s ≅ 1.9 x 10⁻³ M/s.

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