A wildlife researcher is tracking a flock of geese. The geese fly 3.5 km due west, then turn toward the north by 30 ∘ and fly another 5.0 km .

The first-order reaction a→2b+c has rate constant 0.538 s−1. if the initial concentration of a is 0.867 mol l−1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.