If a melon has a a mass of 1 kg, how much does the melon weigh? Group of answer choices
A. 10 N
B. 15 N
C. 5 n
D. 12 N

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.