The eccentricity of an asteroid's orbit is 0.0442, and the semimajor axis is 1.12 x 1011 m. the sun's center is at one focus of the asteroid's orbit. (a) how far from this focus is the other focus in meters? (b) what is the ratio of this distance to the solar radius, 6.96 x 108 m?

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.