10) For a horizontally launched projectile, decreasing the velocity of the launch will
the time in the air and
the horizontal
distance traveled by the projectile. *
a.) not change, increase
b.) decrease, decrease
c.) not change, decrease

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.