In 1993, cuban athlete javier sotomayor set the world record for the
high jump. the gravitational potential energy associated with
sotomayor's jump was 1970 j. sotomayor's mass was 82.0 kg. how
high did sotomayor jump?

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.