Repeatedly making fun of someone, putting them down, and spreading rumors about them are all examples of what type of inappropriate behavior? bullying
stalking
stereotyping
all of the above

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.